Welding steel wire gost 2246 70

WELDING STEEL WIRE

TECHNICAL CONDITIONS

GOST 2246-70

PUBLISHING STANDARDS

Moscow

STATE STANDARD OF THE UNION OF SSR

Date of introduction 01.01.73

This standard applies to cold-drawn mild steel, alloy steel and high alloy steel filler wires.

1. BRANDS AND CLASSIFICATION

1.1. The wire should be manufactured in the following grades:

low-carbon - Sv-08, Sv-08A, Sv-08AA, Sv-08GA, Sv-08GA, Sv-10GA;

alloyed - Sv-08GS, Sv-12GS, Sv-08G2S, Sv-10GN, Sv-08GSMT, Sv-15GSTYUTSA (EP-439), Sv-20GSTYUA, Sv-18HGS, Sv-10NMA, Sv-08MKh, Sv-08KhM , Sv-18KhMA, Sv-08KhNM, Sv-08KhMFA, Sv-10KhMFT, Sv-08KhG2S, Sv-08KhGSMA, Sv-10XG2SMA, SV-08KhGSMFA, Sv-04Kh2MA, Sv-13Kh2MFT, Sv-08Kh3G2SM, SV-08KhMNF -08XN2M, Sv-10XN2GMT (EI-984), Sv-08XN2GMTA (EP-111), Sv-08XN2GMYu, Sv-08XN2G2SMYU, Sv-06N3, Sv-10X5M; highly alloyed - Sv-12X11NMF, Sv-10X11NVMF, Sv-12X13, SV-20X13, Sv-06X14, Sv-08X14GNT, Sv-10X17T, Sv-13X25T, Sv-01X19N9, Sv-04X19N9, Sv-08X16N8M2 (EP-377) , Sv-08X18N8G2B (EP-307), Sv-07X18N9TYu, Sv-06X19N9T, Sv-04X19N9S2, Sv-08X19N9F2S2, Sv-05X19N9F3S2, Sv-07X19N10B, Sv-08X19N10G103 Sv-08X19N10G103 Sv-0819N10G2B) (EI-902), Sv-04X19N11M3, Sv-05X20N9FBS (EI-649), Sv-06X20N11M3TB (EP-89), Sv-10X20N15, Sv-07X25N12G2T (EP-75), Sv-06X25N12TYu (EP-87), Sv-07X25N13, Sv-08X25N13BTYu (EP-389), Sv-13X25N18, Sv-08X20N9G7T, Sv-08X21N10G6, Sv-30X25N16G7, Sv-10X16N25AM6, Sv-09X16N25M6AF (EI-983165), EI-9832328 , Sv-30X15N35V3B3T, Sv-08N50 and Sv-06X15N60M15 (EP-367).

(Modified edition, Amendment No. 2).

1.2. By purpose, the wire is subdivided:

for welding (surfacing);

for the manufacture of electrodes (symbol - E).

The purpose of the wire must be specified in the order.

1.3. By the type of surface, low-carbon and alloy wire are subdivided:

not copper-plated;

copper-plated - (O).

Special requirements for copper plating of the wire surface (including the total copper content) are established technical conditions, approved in the prescribed manner.

The need to supply wire with a copper-coated surface is specified in the order.

(Changed edition, and zm. No. 2).

1.4. At the request of the consumer, the wire should be made of steel melted by electroslag (W) or vacuum arc (VD) remelting or in vacuum induction furnaces (VI). In this case, additional requirements for the metal of the wire (tightening of standards for the content of harmful and foreign impurities, the introduction of restrictions on the content of gases, non-metallic inclusions, etc.) are established by agreement of the parties.

2. VARIETY

2.1. Wire diameters and maximum deviations for them must correspond to those specified in.

Nominal wire diameter	Maximum deviation for wire intended for
	for welding (surfacing)	for making electrodes
	0,05
	0,06
	0,07
	0,12	0,06
	0,12	0,09
	0,09
	0,09
	0,16	0,12
	0,20	0,16
10,0 12,0	0,24

(Modified edition, Amendment, No. 2).

2.2. For highly alloyed wire subjected to pickling, maximum deviations in diameter are allowed by 50% more than those indicated in.

2.3. The ovality of the wire should not exceed half the maximum deviation in diameter.

Examples of legend :

Welding wire with a diameter of 3 mm, grade Sv-08A, intended for welding (surfacing), with a non-copper-free surface:

Wire 3 Sv-08A GOST 2246-70

Welding wire with a diameter of 4 mm, grade Sv-04X19H9, intended for the manufacture of electrodes:

Wire 4 Sv-04K19N9 - E GOST 2246-70

Welding wire with a diameter of 2 mm, grade Sv-ZOKh25N16G7, intended for welding (surfacing), from steel smelted by electroslag remelting:

Wire 2 Sv-30X25N16G7-Sh GOST 2246-70.

Welding wire with a diameter of 1.6 mm, grade Sv-08G2S, intended for welding (surfacing), with a copper-plated surface:

Wire 1.6, Sv-08G2S - О GOST 2246-70

Welding wire with a diameter of 2.5 mm, brand Sv-08KhGSMFA, intended for the manufacture of electrodes from steel smelted in a vacuum induction furnace, with a copper-plated surface:

Wire 2,5Sv-08HGSMFLA-VI-E-O GOST 2246-70

3. TECHNICAL REQUIREMENTS

3.1. The wire is made of steel, the chemical composition of which is given in.

1 mm 1.2 mm 1.4 mm 1.6 mm 2 mm 3 mm 4 mm 5 mm

Markings:
SV-08G2S	SV-08G2S-O	SV-10GSMT	SV-10GSMT-O	SV-10NMA

GOST 2246-70 applies to cold-drawn welding wire made of low-carbon, alloy and high-alloy steel, light and copper-plated, which is used for semi-automatic and automatic welding.

Features:

Welding wire is essential for gas shielded welding. Also used in the manufacture of electrodes. It is divided into copper-plated and light non-copper-plated.

Welding wire is primarily divided by purpose. She can serve consumable electrode for semi-automatic and automatic electric arc welding. Or serves additiveif welding is performed with a non-consumable electrode.

GOST 2246-70 defines the range and technical requirements to the manufacture of welding wire. Examples of product designations decoding are given. There are many brands allowed by GOST. When welding, use a filler wire of the same composition as the metals to be welded. In our company you can buy products of different diameters of the brands Sv08G2S, GOST 2246-70, Sv08GA, Sv08A and others, light and copper-plated, used for various purposes.

INTERSTATE STANDARD

WELDING STEEL WIRE

TECHNICAL CONDITIONS

IPK PUBLISHING STANDARDS
Moscow

INTERSTATE STANDARD

Date of introduction 01.01.73

This standard applies to cold-drawn mild steel, alloy steel and high alloy steel filler wires.

1. BRANDS AND CLASSIFICATION

1.1. The wire should be manufactured in the following grades:

low-carbon - Sv-08, Sv-08A, Sv-08AA, Sv-08GA, Sv-10GA and Sv-10G2;

alloyed - Sv-08GS, Sv-12GS, Sv-08G2S, Sv-10GN, Sv-08GSMT, Sv-15GSTYUTSA (EP-439), Sv-20GSTYUA, Sv-18HGS, Sv-10NMA, Sv-08MKh, Sv-08KhM , Sv-18KhMA, Sv-08KHNM, Sv-08KhMFA, Sv-10KhMFT, Sv-08KhG2S, Sv-08KhGSMA, Sv-10KhG2SMA, Sv-08KhGSMFA, Sv-04Kh2MA, Sv-13Kh2MFT, Sv-08Kh3G2SM, SV-08KhMNF -08XN2M, Sv-10XN2GMT (EI-984), Sv-08XN2GMTA (EP-111), Sv-08XN2GMYu, Sv-08XN2G2SMYU, Sv-06N3, Sv-10X5M;

highly alloyed - Sv-12X11NMF, Sv-10X11NVMF, Sv-12X13, SV-20X13, Sv-06X14, Sv-08X14GNT, Sv-10X17T, Sv-13X25T, Sv-01X19N9, Sv-04X19N9, Sv-08X16N8M2 (EP-377) , Sv-08X18N8G2B (EP-307), Sv-07X18N9TYu, Sv-06X19N9T, Sv-04X19N9S2, Sv-08X19N9F2S2, Sv-05X19N9F3S2, Sv-07X19N10B, Sv-08X19N10G103 Sv-08X19N10G103 Sv-08Kh19N10G103 Sv-0819N10G103 Sv-0819 (EI-902), Sv-04X19N11M3, Sv-05X20N9FBS (EI-649), Sv-06X20N11M3TB (EP-89), Sv-10X20N15, Sv-07X25N12G2T (EP-75), Sv-06X25N12TYu (EP-87), Sv-07X25N13, Sv-08X25N13BTYu (EP-389), Sv-13X25N18, Sv-08X20N9G7T, Sv-08X21N10G6, Sv-30X25N16G7, Sv-10X16N25AM6, Sv-09X16N25M6AF (EI-98316328) , Sv-30X15N35V3B3T, Sv-08N50 and Sv-06X15N60M15 (EP-367).

1.2. By purpose, the wire is subdivided:

for welding (surfacing);

for the manufacture of electrodes (symbol - E).

The purpose of the wire must be specified in the order.

1.3. By the type of surface, low-carbon and alloyed wire is subdivided into:

not copper-plated;

copper-plated - (O).

Special requirements for copper plating of the wire surface (including the total copper content) are established by the technical specifications approved in the prescribed manner.

The need to supply wire with a copper-coated surface is specified in the order.

(Modified edition, amendment No. 2).

1.4. At the request of the consumer, the wire should be made of steel melted by electroslag (W) or vacuum arc (VD) remelting or in vacuum induction furnaces (VI). In this case, additional requirements for the metal of the wire (tightening of standards for the content of harmful and foreign impurities, the introduction of restrictions on the content of gases, non-metallic inclusions, etc.) are established by agreement of the parties.

2. VARIETY

2.1. Wire diameters and maximum deviations for them must correspond to those indicated in table. 1.

Table 1

Nominal wire diameter			Nominal wire diameter	Maximum deviation for wire intended for
	for welding (surfacing)	for making electrodes		for welding (surfacing)	for making electrodes

(Modified edition, Amendment, No. 2).

2.2. For highly alloyed wire, subjected to pickling, maximum deviations in diameter are allowed 50% more than those indicated in table. 1.

2.3. The ovality of the wire should not exceed half the maximum deviation in diameter.

Examples of symbols:

Welding wire with a diameter of 3 mm, grade Sv-08A, intended for welding (surfacing), with a non-copper-free surface:

Welding wire with a diameter of 4 mm, grade Sv-04X19N9, intended for the manufacture of electrodes:

Welding wire with a diameter of 2 mm, grade Sv-30Kh25N16G7, intended for welding (surfacing), made of steel melted by electroslag remelting:

Welding wire with a diameter of 1.6 mm, grade Sv-08G2S, intended for welding (surfacing), with a copper-plated surface:

Welding wire with a diameter of 2.5 mm, brand Sv-08KhGSMFA, intended for the manufacture of electrodes from steel smelted in a vacuum induction furnace, with a copper-plated surface:

Wire 2,5Sv-08HGSMFA-VI-E-O GOST 2246-70

3. TECHNICAL REQUIREMENTS

3.1. The wire is made of steel, the chemical composition of which is given in table. 2.

table 2

Wire grade	Chemical composition, %
			Manganese			Molybdenum		Sulfur, no more	Phosphorus, no more	Other elements
Low carbon wire
	No more than 0.10	No more than 0.03		No more 0,15	Not more than 0.30					Aluminum, no more than 0.01
	No more than 0.10	No more than 0.03		No more than 0.12	No more than 0.25					Aluminum, no more than 0.001
	No more than 0.10	No more than 0.03		No more than 0.10	No more than 0.25					Aluminum, no more than 0.01
	No more than 0.10	No more than 0.06		No more than 0.10	No more than 0.25
	No more than 0.12	No more than 0.06		No more than 0.20	Not more than 0.30
	No more than 0.12	No more than 0.06		No more than 0.20	Not more than 0.30
Alloy wire
	No more than 0.10			No more than 0.20	No more than 0.25
	No more than 0.14			No more than 0.20	Not more than 0.30
				No more than 0.20	No more than 0.25
	No more than 0.12			No more than 0.20
				Not more than 0.30	Not more than 0.30
St. 15GSTYUTS				Not more than 0.30	No more than 0.40					Aluminum 0.20-0.50; zirconium 0.05-0.15; cerium, not less than 0.04
Sv-20GSTUA				Not more than 0.30	No more than 0.40					Aluminum 0.20-0.50; cerium 0.30-0.45
					Not more than 0.30
				No more than 0.20
					Not more than 0.30
					Not more than 0.30
					Not more than 0.30
	No more than 0.10
					Not more than 0.30					Vanadium 0.15-0.30
		No more than 0.35			Not more than 0.30					Vanadium 0.20-0.35
					No more than 0.25
Sv-08HGSMA					Not more than 0.30
Sv-10HG2SMA					Not more than 0.30
Sv-08HGSMFA					Not more than 0.30					Vanadium 0.20-0.35
	No more than 0.06				No more than 0.25
Sv-13H2MFT		No more than 0.35			Not more than 0.30					Vanadium 0.20-0.35
Sv-08H3G2SM	No more than 0.10				Not more than 0.30
Sv-08KhMNFBA										Vanadium 0.20-0.35; niobium 0.10-0.23
	No more than 0.10
Sv-10HN2GMT
Sv-08HN2GMTA
Sv-08ХН2ГМЮ										Aluminum 0.06-0.18
Sv-08HN2G2SMYU										Aluminum 0.06-0.18
	No more than 0.08	Not more than 0.30		Not more than 0.30
	No more than 0.12				Not more than 0.30
High alloy wire
Sv-12H11NMF										Vanadium 0.25-0.50
Sv-10H11NVMF										Vanadium 0.25-0.50; tungsten 1.00-1.40
					No more - 0.60
		No more than 0.60	No more than 0.60
	No more than 0.08				No more - 0.60
SV-08X14GNT	No more than 0.10
	No more than 0.12	No more than 0.80	No more than 0.70		No more than 0.60
	No more than 0.15	No more than 1.00	No more than 0.80		No more than 0.60
	No more than 0.03
	No more than 0.06
Sv-08H16N8M2		No more than 0.60
Sv-08X18N8G2B										Niobium 1.20-1.50
Sv-07H18N9TYu	No more than 0.09	No more than 0.80	No more than 2.00							Aluminum 0.60-0.95
Sv-06X19N9T	No more than 0.08
Sv-04H19N9S2	No more than 0.06
Sv-08X19N9F2S2	No more than 0.10									Vanadium 1.80-2.40
Sv-05H19N9F3S2	No more than 0.07									Vanadium 2.20-2.70
Sv-07X19N10B		No more than 0.70								Niobium 1.20-1.50
Sv-08H19N10G2B										Niobium 0.90-1.30
Sv-06Х19Н10М3Т	No more than 0.08
Sv-08H19N10M3B	No more than 0.10	No more than 0.60								Niobium 0.90-1.30
Sv-04H19N11M3	No more than 0.06	No more than 0.60
Sv-05H20N9FBS	No more than 0.07									Niobium 1.00-1.40; vanadium 0.90-1.30
Sv-06H20N11M3TB	No more than 0.08		No more than 0.80							Niobium 0.60-0.90
	No more than 0.12	No more than 0.80
Sv-07X25N12G2T	No more than 0.09
Sv-06H25N12TYu	No more than 0.08		No more than 0.80							Aluminum 0.40-0.80
	No more than 0.09
Sv-08Х25Н13БТЮ	No more than 0.10		No more than 0.55							Niobium 0.70-1.10; aluminum 0.40-0.90
	No more than 0.15	No more than 0.50
Sv-08X20N9G7T	No more than 0.10
Sv-08X21H10G6	No more than 0.10
Sv-30X25N16G7		Not more than 0.30
Sv-10X16N25AM6		No more than 0.60								Nitrogen 0.10-0.20
Sv-09X16N25M6AF		No more than 0.40								Vanadium 0.70-1.00; nitrogen 0.10-0.20
Sv-01H23N28M3D3T	No more than 0.03	No more than 0.55	No more than 0.55							Copper 2.50-3.50
Sv-30X15N35V3B3T		No more than 0.60								Tungsten 2.50-3.50; niobium 2.80-3.50
	No more than 0.10	No more than 0.50	No more than 0.50	Not more than 0.30
Sv-06Х15Н60М15	No more than 0.08	No more than 0.50								Iron, not more than 4.0

Notes:

1. Symbols of wire grades consist of the index Sv (welding) and the following numbers and letters.

2. The numbers following the S index indicate the average carbon content in hundredths of a percent.

3. The chemical elements contained in the wire metal are designated by the following letters:

A - nitrogen (only in high-alloy wires); B - niobium; B - tungsten; G - manganese; D - copper; M is molybdenum; H - nickel; C - silicon; T is titanium; F - vanadium; X is chromium; C - zirconium; Yu - aluminum.

4. The numbers following the letter designations of chemical elements indicate the average percentage of the element. After the letter designation of elements contained in small quantities, numbers are not entered.

5. The letter A at the end of the legend for low-carbon and alloy wire grades indicates an increased purity of the metal in terms of sulfur and phosphorus content. In the wire of the Sv-08AA brand, the double letter A indicates a lower content of sulfur and phosphorus in comparison with the wire of the Sv-08A brand.

(Modified edition, Amendment No. 2; Amendments, IMS 10-2001, 6-2003).

3.2. At the request of the consumer, the carbon content in the wire of the Sv-08GSMT grade should be 0.08 - 0.14%, in this case the wire is designated Sv-10GSMT.

By agreement of the parties, it is allowed to supply wires of grades Sv-08MKh, Sv-08KhM and Sv-08KhMFA with a carbon content of 0.08 - 0.13%; in this case, the wire is designated Sv-10MH, Sv-10KhM and Sv-10KhMFA, respectively.

(Modified edition, Amendment No. 2).

3.3. An increase in carbon content is allowed:

up to 0.15% - in wire of the Sv-12X13 brand;

up to 0.10% - in wire of the Sv-07Kh19N10B grade.

With the consent of the consumer, it is allowed in wire of the Sv-08G2S brand with a diameter of up to 1.4 mm inclusive mass fraction manganese 1.65 - 2.10%.

(Modified edition, Amendment: No. 3).

3.4. In the wire of the Sv-07X25H13 grade, intended for welding (surfacing), the chromium content must be at least 23.5%.

By agreement of the parties, the ratio of the chromium content to the nickel content in the wire of the Sv-08Kh21N10G6 grade must be at least 2.

3.5. Subject to the remaining requirements of this standard, it is allowed to supply wire with a deviation in the content of one of the chemical elements from the standards given in table. 2. The permissible deviations must correspond to those indicated in table. 3.

Note. With the consent of the consumer, subject to compliance with the values \u200b\u200bof the permissible deviations specified in table. 3. it is allowed to supply wire with deviations in the content of several chemical elements from the standards given in table. 2.

Table 3

Chemical element name	The actual content of the element in the wire,%	Permissible deviation,%
	0.08 to 0.12
Manganese	0.60 to 1.20
	0.35 to 0.85
	0.30 to 0.90
	0.30 to 0.90
	St. 0.90 to 1.80
	St. 1.80 to 7.00
	0.30 to 1.20
	St. 1.20 to 2.50
	St. 2.50 to 7.00
	0.20 to 0.80
	0.30 to 1.50
Tungsten	1.00 to 2.50
Molybdenum	0.30 to 1.00
	St. 1.00 to 3.00
Aluminum	0.10 to 0.30

3.4, 3.5. (Modified edition, Amendment No. 2).

3.6. Cerium is introduced into the wire of the Sv-20GSTUA brand according to the calculation and chemical analysis do not define.

3.7. In low-carbon and alloyed wire, the content of arsenic should not exceed 0.08%.

3.8. With the consent of the consumer in wire of grades Sv-08 and Sv-08A, a residual aluminum content of up to 0.05% is allowed.

3.9. In low-carbon wire of grades Sv-08GA, Sv-10GA and Sv-10G2 and alloyed wire (not alloyed with aluminum), the residual aluminum content should not exceed 0.05%.

3.10. And for wire not alloyed with molybdenum, the residual content of molybdenum should not exceed:

0.15% - in alloyed wire;

0.25% - in high-alloy wire.

3.11. In wire not alloyed with titanium, the residual titanium content should not exceed:

0.04% - in alloyed wire;

0.2% - in high-alloy wire.

At the request of the consumer, in wire of grades Sv-04X19N11M3 and Sv-08X21N10G6, the residual titanium content should not exceed 0.1%.

3.12. In alloyed wire not alloyed with vanadium, the residual vanadium content should not exceed 0.05%, with the exception of wire of the Sv-08Kh3G2SM and Sv-10Kh5M grades, in which the residual vanadium content is allowed up to 0.08%.

3.13. In wire not alloyed with copper, the residual copper content should not exceed 0.25%.

At the request of the consumer, the residual copper content in the wire should be no more than 0.20%.

Note. The requirements of clause 3.13 apply to wire with a non-copper-free surface.

2 - 6% - in wire of grades Sv-08Kh16N8M2 and Sv-08Kh18N8G2B;

3 - 8% - in wire grade Sv-04X19H11M3.

In the wire of the listed brands, it is allowed to increase the chromium content up to 1% in excess of the norms given in table. 2.

3.15. For wire of grades Sv-01X19N9, Sv-04X19N9, SV-06X19N9T, Sv-08X19N10G2B, Sv-08X19N10M3B and Sv-07X25N13, the content of the ferrite phase is regulated by agreement of the parties; at the same time, it is allowed to increase the chromium content up to 2%, and nickel up to 1% in comparison with the norms given in table. 2.

3.14, 3.15 (Modified edition, Amendment No. 2).

Table 4

Wire group	Wire grade
	Sv-08A, Sv-08GA, Sv-10GA, Sv-10G2, Sv-08GS, Sv-12GS, Sv-08G2S, Sv-10GN, Sv-08GSMT, Sv-10NMA
	Sv-08MH, Sv-08KhM, Sv-18KhMA, Sv-08KhNM, Sv-08KhMFA
	Sv-18KhGS, Sv-10KhMFT, Sv-08KhGSMA, Sv-08KhGSMFA, Sv-08KhMNFBA, Sv-08KhN2M, Sv-10KhN2GMT, Sv-08KhN2GMTA, Sv-08KhN2GMYu, Sv-08KhN2G2SMYu, Sv-06N3
	Sv-08HG2S, Sv-10HG2SMA, Sv-04X2MA, Sv-13X2MFT, Sv-08X3G2SM
	Sv-08X19N10G2B, Sv-08X19N10M3B, Sv-07X25N13

Notes:

1. (Deleted, Amendment No. 5).

2. Wire of group 2 is allowed with the consent of the consumer, the content of nitrogen up to 0.012%.

3. Until January 1, 1981, in wires of groups 4, 5 and 6, an increase in the nitrogen content by 0.005% above the norms indicated in the table was allowed. From January 1, 1981, the specified increase in nitrogen content may be allowed with the consent of the consumer.

4. When manufacturing wire of group 7 with a regulated content of the ferrite phase, the requirement to limit the nitrogen content is not mandatory.

(Modified edition, Amendments No. 2, 5; Amendment, IUS 6-2003).

3.17. By agreement of the parties, the wire should be made of steel with narrowed limits for the content of chemical elements in comparison with those indicated in table. 2, as well as limiting the content of chemical elements not listed in Table 2 and in paragraphs. 3.7, 3.9 - 3.13 and 3.16.

3.18. By agreement of the parties, it is allowed to set other permissible values \u200b\u200bof the residual content of chemical elements in comparison with those specified in clauses 3.9 - 3.12.

3.19. Wire with a non-copper-plated surface is rolled into coils, the dimensions and mass of which correspond to those indicated in table. five.

Table 5

Wire diameter, mm	Inner diameter of wire coil turns, mm	Wire coil weight, kg, not less
		low carbon	alloyed	highly alloyed

Note. It is allowed to supply coils with a weight reduced to 50% of that indicated in table. 5, in the amount of not more than 10% of the total weight of the wire in the batch.

3.20. Copper-coated wire is rolled into coils rectangular section, the dimensions of which must correspond to those indicated in table. 6. For wire with a diameter of 1.6 - 3.0 mm, the required coil sizes are specified in the order. By agreement with the consumer, wire with a non-copper-free surface is also rolled into coils of rectangular cross-section.

Table 6

3.19, 3.20. (Modified edition, Amendment No. 2)

3.21. By agreement of the parties, the wire is delivered wound on spools or cassettes.

3.22. By agreement of the parties, it is allowed to supply wire in coils of increased weight or on large-sized spools.

3.23. Wire in coils (spools, cassettes) should consist of one piece, rolled up in undisturbed rows and tightly rolled in such a way as to exclude the possibility of fluffing up or unwinding the coil. The ends of the wire should be easy to find. Resistance butt welding of separate pieces of wire of the same heat is allowed: in this case, the welded joint zone must comply with the requirements of this standard .

3.24. The ultimate tensile strength of alloyed and high-alloyed wire must comply with the standards specified in table. 7

Table 7

Wire diameter, mm	The ultimate tensile strength of the wire, MPa (kgf / mm 2), intended
	for welding (surfacing)	for making electrodes
	882-1372 (90-140)
	882-1323 (90-135)
	882-1274 (90-130)	686-980 (70-100)
	784-1176 (80-120)	686-980 (70-100)
	686-1029 (70-105)

Notes:

1. Fluctuations of the ultimate tensile strength in one coil of wire with a diameter of more than 1.4 mm should not exceed 98 MPa (10 kgf / mm 2).

2. Alloyed and high-alloyed wire is subjected to additional heat treatment. If the specified limits of ultimate tensile strength are ensured, additional heat treatment of the wire may not be performed.

3.25. Increase allowed upper limit ultimate tensile strength (regardless of the purpose of the wire):

up to 110 kgf / mm 2 - for wire with a diameter of more than 2 mm grades:

Sv-06X20N11M3TB (EP89);

Sv-07X25N12G2T (EP75);

Sv-06X25N12TYu and SV-08X25N13BTYu (EP389);

up to 115 kgf / mm 2 - for wire with a diameter of more than 2 mm grades:

Sv-10X16N25AM6 (EI395);

Sv-09X16N25M6AF (EI981A);

SV-01X23N28M3D3T (EP516) and Sv-06X15N60M15;

up to 135 kgf / mm 2 - for wire with a diameter of 2 mm grades:

Sv-08X20N9G7T;

Sv-08X21N10G6;

Sv-10X16N25AM6;

Sv-09X16N25M6AF;

up to 145 kgf / mm 2 - for wire with a diameter less than 2 mm grades:

Sv-08X20N9G7T;

Sv-10X16N25AM6;

Sv-08X21N10G6;

Sv-09X16N25M6AF;

up to 180 kgf / mm 2 - wire grades with a diameter of 2 mm or less grades:

Sv-01X23N28M3D3T (EP516) and Sv-06X15N60M15.

3.26. The surface of the wire must be clean and smooth, without cracks, delamination, captivity, sunsets, shells, nicks, scale, rust, oil and other contaminants. On the surface of the wire, risks (including tightened ones), scratches, local ripples and individual dents are allowed. The depth of the indicated defects should not exceed the maximum deviation in the wire diameter.

At the request of the consumer, the wire is manufactured with an improved surface. In this case, small drawing risks, scratches, traces of grinding, local ripples and individual dents are allowed on the surface of the wire, with the depth of each of the indicated defects not exceeding 1/4 of the maximum deviation in diameter.

3.24 - 3.26. (Modified edition, Amendment No. 2).

3.27. On the surface of low-carbon and alloyed wire, the presence of technological lubricants is not allowed, with the exception of: traces of soapy grease without graphite and sulfur.

3.28. Wire grades Sv-08GS, Sv-08G2S, Sv-08GSMT, Sv-08KhG2S, Sv-08KhGSMA, Sv-10KhG2SMA, Sv-08KhGSMFA and Sv-08Kh3G2SM should be manufactured with a copper-plated surface or non-copper-plated. On the surface of non-copper-plated wire, traces of soap grease up to 0.05% of the wire weight are allowed. The type of wire surface is specified in the order. If the type of surface is not specified in the order, the type of wire surface is set by the manufacturer.

(Modified edition, Amendment No. 5).

3.29. With the consent of the consumer, wire of the Sv-18KhGS and Sv-18KhMA grades may be coated with a continuous layer of neutral grease, readily soluble in gasoline, to protect it from corrosion.

3.30. High-alloy wire should be delivered pickled and bleached or after heat treatment in an inert atmosphere with a light, light matte or gray surface, without any traces of grease.

3.3.1. The wire must be accepted technical control manufacturer. The manufacturer must ensure that the supplied wire complies with the requirements of this standard.

4. TEST METHODS

4.1. Wire is supplied in lots. Each batch should consist of one wire grade, one heat, one diameter, one purpose and one type of surface.

4.2. All coils (spools, cassettes) of wire should be inspected and measured.

4.3. The wire diameter is measured with an accuracy of 0.01 mm in two mutually perpendicular directions in each section at least in two places at a distance of at least 5 m from each other.

4.4. Samples for the chemical composition are taken in accordance with GOST 7565 when smelting steel and, if necessary, in wire.

To check the chemical composition of the wire, 0.5% of coils (coils, cassettes) are taken from each batch, but not less than two coils (coils, cassettes). Samples for analysis should be taken from both ends of each controlled coil or from two sections, at a distance of at least 5 m from each other of each controlled coil (cassette).

(Modified edition, Amendment No. 2).

4.5. To check the temporary resistance to breaking the wire, 2% of the coils (coils, cassettes) are taken from each batch, but at least three coils (coils, cassettes). Samples for testing should be taken from two sections of each controlled coil (reel, cassette) at a distance of at least 5 m from each other.

To check the content of the α-phase during steelmaking, a sample of liquid metal is taken from each ladle during its pouring.

To check the content of the α-phase in the wire, 3% of coils (coils, cassettes) are taken from each batch, but not less than three coils (coils, cassettes). Samples for verification must be taken from both ends of each controlled coil or from two sections of each controlled coil (cassette) at a distance of at least 5 m from each other.)

The method for determining the content of the α-phase is given in Appendix 1.

(Modified edition, Amendment No. 2).

4.6a. To check for traces of soap grease on the surface of the wire, 2% of the coils (coils) are taken from each batch, but not less than three coils (coils). The method for determining the mass of traces of soap grease on the surface of the wire is given in Appendix 2.

(Introduced additionally, Amendment No. 5).

4.7. The chemical composition is determined according to GOST 12344 - GOST 12365, GOST 28473, GOST 22536.0 - GOST 22536.12 or other methods that ensure the required accuracy of determination.

4.7, 4.8. (Modified edition, Amendment No. 2).

4.9. Wire tensile tests to determine the ultimate tensile strength are carried out in accordance with GOST 10446.

4.10. When checking the chemical composition of the wire in accordance with the requirements of table. 2, pp. 3.7, 3.9 - 3.13. and 3.16, the actual nitrogen content in alloyed and high-alloyed wire of grades not specified in clause 3.16, as well as the actual residual content of aluminum and vanadium in high-alloy wire and tungsten in alloyed and high-alloyed wire, are subject to mandatory determination.

The results of this determination are indicated in the quality document.

Determination of nitrogen content in low-carbon wire and arsenic in low-carbon and alloy wire, as well as the residual content of aluminum, molybdenum, titanium and vanadium in alloy wire and copper in all grades is allowed not to be performed if the steel smelting technology guarantees the content of the listed elements within the limits established this standard.

(Modified edition, Amendment No. 2).

4.11. When unsatisfactory test results are obtained for at least one of the indicators, repeated tests are carried out on a double number of samples taken from the same control lot of wire.

Upon receipt of unsatisfactory results of repeated tests, the manufacturer can re-sort the batch of wire by conducting tests according to the same indicators for each coil (coil, cassette), followed by the delivery of the coils (coils, cassettes) that have passed the tests.

4.12. For consumer verification of the quality of the wire and its compliance with the requirements of this standard, the sampling rules and test methods specified above should be applied.

5. LABELING, PACKAGING, TRANSPORTATION AND STORAGE

5.1. Each coil should be tightly tied with soft wire in at least three places evenly spaced around the perimeter of the coil.

5.2. Coils of wire of one batch are allowed to be tied into coils. The mass of one coil or coil should not exceed 80 kg. By agreement with the consumer, the weight of coils or coils is more than 80 kg.

5.3. A metal label is attached to each coil (coil, coil, cassette) of wire, which must indicate:

a) the name or trademark of the manufacturer;

b) conventional designation of the wire;

c) batch number;

d) stamp of technical control.

Transport marking - according to GOST 14192.

(Modified edition, Amendments No. 2, 4).

5.4. Each coil (coil, coil) of wire with a diameter of 0.5 mm or less must be wrapped in a layer of paper and packed in a dense wooden box in accordance with GOST 18617 or other containers (metal, cardboard, plastic), in accordance with the regulatory and technical documentation.

Each coil (coil, coil) of wire with a diameter over 0.5 mm should be wrapped with a layer of paper, then a layer of plastic film, nonwovens or fabric made of chemical fibers.

For mechanized packaging, each coil of wire should be wrapped in a layer of cable crepe

1.1. The wire should be manufactured in the following grades:

low-carbon - Sv-08, Sv-08A, Sv-08AA, Sv-08GA, Sv-08GA, Sv-10GA;

alloyed - Sv-08GS, Sv-12GS, Sv-08G2S, Sv-10GN, Sv-08GSMT, Sv-15GSTYUTSA (EP-439), Sv-20GSTYUA, Sv-18HGS, Sv-10NMA, Sv-08MKh, Sv-08KhM , Sv-18KhMA, Sv-08KhNM, Sv-08KhMFA, Sv-10KhMFT, Sv-08KhG2S, Sv-08KhGSMA, Sv-10XG2SMA, SV-08KhGSMFA, Sv-04Kh2MA, Sv-13Kh2MFT, Sv-08Kh3G2SM, SV-08KhMNF -08XN2M, Sv-10XN2GMT (EI-984), Sv-08XN2GMTA (EP-111), Sv-08XN2GMYu, Sv-08XN2G2SMYU, Sv-06N3, Sv-10X5M; highly alloyed - Sv-12X11NMF, Sv-10X11NVMF, Sv-12X13, SV-20X13, Sv-06X14, Sv-08X14GNT, Sv-10X17T, Sv-13X25T, Sv-01X19N9, Sv-04X19N9, Sv-08X16N8M2 (EP-377) , Sv-08X18N8G2B (EP-307), Sv-07X18N9TYu, Sv-06X19N9T, Sv-04X19N9S2, Sv-08X19N9F2S2, Sv-05X19N9F3S2, Sv-07X19N10B, Sv-08X19N10G103 Sv-08X19N10G103 Sv-0819N10G2B) (EI-902), Sv-04X19N11M3, Sv-05X20N9FBS (EI-649), Sv-06X20N11M3TB (EP-89), Sv-10X20N15, Sv-07X25N12G2T (EP-75), Sv-06X25N12TYu (EP-87), Sv-07X25N13, Sv-08X25N13BTYu (EP-389), Sv-13X25N18, Sv-08X20N9G7T, Sv-08X21N10G6, Sv-30X25N16G7, Sv-10X16N25AM6, Sv-09X16N25M6AF (EI-983165), EI-9832328 , Sv-30X15N35V3B3T, Sv-08N50 and Sv-06X15N60M15 (EP-367).

1.2. By purpose, the wire is subdivided:

for welding (surfacing);

for the manufacture of electrodes (symbol - E).

The purpose of the wire must be specified in the order.

1.3. By the type of surface, low-carbon and alloy wire are subdivided:

not copper-plated;

copper-plated - (O).

Special requirements for the copper plating of the wire surface (including the total copper content) are established by the technical specifications approved in the prescribed manner.

The need to supply wire with a copper-coated surface is specified in the order.

(Modified edition, amendment No. 2).

1.4. At the request of the consumer, the wire should be made of steel melted by electroslag (W) or vacuum arc (VD) remelting or in vacuum induction furnaces (VI). In this case, additional requirements for the metal of the wire (tightening of standards for the content of harmful and foreign impurities, the introduction of restrictions on the content of gases, non-metallic inclusions, etc.) are established by agreement of the parties.

2. VARIETY

2.1. Wire diameters and maximum deviations for them must correspond to those specified in tab. 1.

Nominal wire diameter	Maximum deviation for wire intended for
	for welding (surfacing)	for making electrodes

(Modified edition, Amendment, No. 2).

2.2. For highly alloyed wire subjected to pickling, maximum deviations in diameter are allowed by 50% more than specified in tab. 1.

2.3. The ovality of the wire should not exceed half the maximum deviation in diameter.

Examples of symbols:

Welding wire with a diameter of 3 mm, grade Sv-08A, intended for welding (surfacing), with a non-copper-free surface:

Wire 3 Sv-08A GOST 2246-70

Welding wire with a diameter of 4 mm, grade Sv-04X19H9, intended for the manufacture of electrodes:

Wire 4 Sv-04K19N9 - E GOST 2246-70

Welding wire with a diameter of 2 mm, grade Sv-ZOKh25N16G7, intended for welding (surfacing), from steel smelted by electroslag remelting:

Wire 2 Sv-30X25N16G7-Sh GOST 2246-70.

Welding wire with a diameter of 1.6 mm, grade Sv-08G2S, intended for welding (surfacing), with a copper-plated surface:

Wire 1.6, Sv-08G2S - О GOST 2246-70

Welding wire with a diameter of 2.5 mm, brand Sv-08KhGSMFA, intended for the manufacture of electrodes from steel smelted in a vacuum induction furnace, with a copper-plated surface:

Wire 2,5Sv-08HGSMFLA-VI-E-O GOST 2246-70

3. TECHNICAL REQUIREMENTS

3.1. The wire is made of steel, the chemical composition of which is given in tab. 2.

Wire grade	Chemical composition, %
	Carbon	Silicon	Manganese	Chromium	Nickel	Molybdenum	Titanium	Sulfur, no more	Phosphorus - no more	Other elements
Low carbon wire
	No more than 0.10	No more than 0.03		No more than 0.15	Not more than 0.30					Aluminum, no more than 0.01
	No more than 0.10	No more than 0.03		No more than 0.12	No more than 0.25					Aluminum, no more than 0.001
	No more than 0.10	No more than 0.03		No more than 0.10	No more than 0.25					Aluminum, no more than 0.01
	No more than 0.10	No more than 0.06		No more than 0.10	No more than 0.25
	No more than 0.12	No more than 0.06		No more than 0.20	Not more than 0.30
	No more than 0.12	No more than 0.06		No more than 0.20	Not more than 0.30
Alloy wire
	No more than 0.10			No more than 0.20	No more than 0.25
	No more than 0.14			No more than 0.20	Not more than 0.30
				No more than 0.20	No more than 0.25
	No more than 0.12			No more than 0.20
				Not more than 0.30	Not more than 0.30
St. 15GSTYUTS				Not more than 0.30	No more than 0.40					Aluminum 0.20-0.50; zirconium 0.05-0.15; cerium, not less than 0.04
Sv-20GSTUA				Not more than 0.30	No more than 0.40					Aluminum 0.20-0.50; cerium 0.30-0.45
					Not more than 0.30
				No more than 0.20
					Not more than 0.30
					Not more than 0.30
					Not more than 0.30
	No more than 0.10
					Not more than 0.30					Vanadium 0.15-0.30
		No more than 0.35			Not more than 0.30					Vanadium 0.20-0.35
					No more than 0.25
Sv-08HGSMA					Not more than 0.30
Sv-10HG2SMA					Not more than 0.30
Sv-08HGSMFA					Not more than 0.30					Vanadium 0.20-0.35
	No more than 0.06				No more than 0.25
Sv-13H2MFT		No more than 0.35			Not more than 0.30					Vanadium 0.20-0.35
Sv-08H3G2SM	No more than 0.10				Not more than 0.30
Sv-08KhMNFBA										Vanadium 0.20-0.35; niobium 0.10-0.23
	No more than 0.10
Sv-10HN2GMT
Sv-08HN2GMTA
Sv-08ХН2ГМЮ										Aluminum 0.06-0.18
Sv-08HN2G2SMYU										Aluminum 0.06-0.18
	No more than 0.08	Not more than 0.30		Not more than 0.30
	No more than 0.12				Not more than 0.30
High alloywire
SV-12H11NMF										Vanadium 0.25-0.50
Sv-10H11NVMF										Vanadium 0.25-0.50; tungsten 1.00-1.40
					No more - 0.60
		No more than 0.60	No more than 0.60
	No more than 0.08				No more - 0.60
SV-08X14GNT	No more than 0.10
	No more than 0.12	No more than 0.80	No more than 0.70		No more than 0.60
	No more than 0.15	No more than 1.00	No more than 0.80		No more than 0.60
	No more than 0.03
	No more than 0.06
Sv-08H16N8M2		No more than 0.60
Sv-08X18N8G2B										Niobium 1.20-1.50
Sv-07H18N9TYu	No more than 0.09	No more than 0.80	No more than 2.00							Aluminum 0.60-0.95
Sv-06X19N9T	No more than 0.08
Sv-04H19N9S2	No more than 0.06
Sv-08X19N9F2S2	No more than 0.10									Vanadium 1.80-2.40
Sv-05H19N9F3S2	No more than 0.07									Vanadium 2.20-2.70
SV-07H19N10B		No more than 0.70								Niobium 1.20-1.50
SV-08X19N10G2B										Niobium 0.90-1.30
SV-06X19N10MZT	No more than 0.08
Sv-08H19N10M3B	No more than 0.10	No more than 0.60								Niobium 0.90-1.30
Sv-04H19N11MZ	No more than 0.06	No more than 0.60
Sv-05H20N9FBS	No more than 0.07									Niobium 1.00-1.40; vanadium 0.90-1.30
Sv-06H20N11M3TB	No more than 0.08		No more than 0.80							Niobium 0.60-0.90
	No more than 0.12	No more than 0.80
Sv-07X25N12G2T	No more than 0.09
Sv-06H25N12TYu	No more than 0.08		No more than 0.80							Aluminum 0.40-0.80
	No more than 0.09
Sv-08Х25Н13БТЮ	No more than 0.10		No more than 0.55							Niobium 0.70-1.10; aluminum 0.40-0.90
	No more than 0.15	No more than 0.50
Sv-08X20N9G7T	No more than 0.10
Sv-08X21H10G6	No more than 0.10
Sv-3OH25N16G7		Not more than 0.30
Sv-10X16N25AM6		No more than 0.60								Nitrogen 0.10-0.20
Sv-09X16N25M6AF		No more than 0.40								Vanadium 0.70-1.00; nitrogen 0.10-0.20
Sv-01H23N28M3D3T	No more than 0.03	No more than 0.55	No more than 0.55							Copper 2.50-3.50
Sv-30X15N35V3B3T		No more than 0.60								Tungsten 2.50-3.50; niobium 2.80-3.50
	No more than 0.10	No more than 0.50	No more than 0.50	Not more than 0.30
Sv-06Х15Н60М15	No more than 0.08	No more than 0.50								Iron, not more than 4.0

Notes:

1. Symbols of wire grades consist of the index Sv (welding) and the following numbers and letters.

2. The numbers following the S index indicate the average carbon content in hundredths of a percent.

3. The chemical elements contained in the wire metal are designated by the following letters:

A - nitrogen (only in high-alloy wires); B - niobium; B - tungsten; G - manganese; D - copper; M is molybdenum; H - nickel; C - silicon; T is titanium; F - vanadium; X is chromium; C - zirconium; Yu - aluminum.

4. The numbers following the letter designations of chemical elements indicate the average percentage of the element. After the letter designation of elements contained in small quantities, numbers are not entered.

5. The letter A at the end of the legend for low-carbon and alloy wire grades indicates an increased purity of the metal in terms of sulfur and phosphorus content. In the wire of the Sv-08AA grade, the double letter A indicates a lower content of sulfur and phosphorus in comparison with the wire of the Sv-08A grade.

(Modified edition, Amendment No. 2).

(Amendment, IUS 6-2003)

3.2. At the request of the consumer, the carbon content in the wire of the Sv-08GSMT grade should be 0.08-0.14%, in this case the wire is designated Sv-10GSMT.

By agreement of the parties, it is allowed to supply wires of grades Sv-08MH, Sv-08KhM and Sv-08KhMFA with a carbon content of 0.08-0.13%; in this case, the wire is designated Sv-10MH, Sv-10KhM and Sv-10KhMFA, respectively.

(Modified edition, Amendment No. 2).

3.3. An increase in carbon content is allowed:

up to 0.15% - in wire grade Sv-12X13;

up to 0.10% - in the wire of the Sv-07X19N10B brand.

With the consent of the consumer, the mass fraction of manganese 1.65-2.10% is allowed in the wire of the Sv-08G2S brand with a diameter up to 1.4 mm

(Modified edition, Amendment: No. 3).

3.4. In the wire of the Sv-07X25H13 grade, intended for welding (surfacing), the chromium content must be at least 23.5%.

By agreement of the parties, in the wire of the Sv-08Kh21N10G6 grade, the ratio of the chromium content to the nickel content must be at least 2

3.5. Subject to the remaining requirements of this standard, it is allowed to supply wire with a deviation in the content of one of the chemical elements from the standards given in tab. 2 ... The permissible deviations must correspond to those specified in tab. 3.

Note. With the consent of the consumer, subject to compliance with the values \u200b\u200bof the permissible deviations specified in tab. 3 ... delivery of wire with deviations in the content of several chemical elements from the standards given in tab. 2.

Chemical element name	The actual content of the element in the wire,%	Permissible deviation,%
	0.08 to 0.12
Manganese	0.60 to 1.20
	0.35 to 0.85
	0.30 to 0.90
	0.30 to 0.90
	St. 0.90 to 1.80
	St. 1.80 to 7.00
	0.30 to 1.20
	St. 1.20 to 2.50
	St. 2.50 to 7.00
	0.20 to 0.80
	0.30 to 1.50
Tungsten	1.00 to 2.50
Molybdenum	0.30 to 1.00
	St. 1.00 to 3.00
Aluminum	0.10 to 0.30

3.2-3.5. (Modified edition, Amendment No. 2).

3.6. Cerium is introduced into the wire of the Sv-20GSTYuA brand by calculation and is not determined by chemical analysis.

At the request of the consumer, the residual copper content in the wire should be no more than 0.20%.

3.15. For wire of grades Sv-01X19N9, Sv-04X19N9, SV-06X19N9T, Sv-08X19N10G2B, Sv-08X19N10M3B and Sv-07X25N13, the content of the ferrite phase is regulated by agreement of the parties; at the same time, it is allowed to increase the chromium content up to 2%, and nickel up to 1% in comparison with the norms given in tab. 2.

3.14-3.16. (Modified edition, Amendment No. 2).

3.17. By agreement of the parties, the wire must be made of steel with narrowed limits for the content of chemical elements in comparison with those specified in tab. 2 , as well as limiting the content of chemical elements not listed in table 2 and in nos. 3.7 , 3.9-3.13 and 3.16.

3.18. By agreement of the parties, it is allowed to establish other permissible values \u200b\u200bof the residual content of chemical elements in comparison with those specified in cl. 3.9-3.12.

3.19. Wire with a non-copper-plated surface is rolled into coils, the dimensions and weight of which correspond to those specified in tab. five.

Wire group	Wire grade
	Sv-08A, Sv-08GA, Sv-10GA, Sv-10G2, Sv-08GS, Sv-12GS, Sv-08G2S, Sv-10GN, Sv-08GSMT, Sv-10NMA
	Sv-08MH, Sv-08KhM, Sv-18KhMA, Sv-08KhNM, Sv-08KhMFA
	Sv-18KhGS, Sv-10KhMFT, Sv-08KhGSMA, Sv-08KhGSMFA, Sv-08KhMNFBA, Sv-08KhN2M, Sv-10KhN2GMT, Sv-08KhN2GMTA, Sv-08KhN2GMYu, Sv-08KhN2G2SMYu, Sv-06N3
	Sv-08HG2S, Sv-10HG2SMA, Sv-04X2MA, Sv-13X2MFT, Sv-08X3G2SM
	Sv-08X19N10G2B, Sv-08X19N10M3B, Sv-07X25N13

(Amendment, IUS 6-2003).

Notes:

1. (Deleted, Amendment No. 5).

2. Wire of group 2 is allowed with the consent of the consumer, the content of nitrogen up to 0.012%. ...

3. Until January 1, 1981, in wires of groups 4, 5 and 6, an increase in the nitrogen content by 0.005% above the norms indicated in the table was allowed. From January 1, 1981, the specified increase in nitrogen content may be allowed with the consent of the consumer.

4. When manufacturing wire of group 7 with a regulated content of the ferrite phase, the requirement to limit the nitrogen content is not mandatory.

Note. It is allowed to supply coils with a weight reduced to 50% of that specified in tab. five , in the amount of not more than 10% of the total weight of the wire in the batch.

(Modified edition, Amendment No. 2).

3.20. The wire with a copper-coated surface is rolled into rectangular coils, the dimensions of which must correspond to those specified in tab. 6 ... For wire with a diameter of 1.6-3.0 mm, the required coil sizes are specified in the order. By agreement with the consumer, wire with a non-copper-free surface is also rolled into coils of rectangular cross-section.

3.19, 3.20. (Modified edition, Amendment No. 2)

3.21. By agreement of the parties, the wire is delivered wound on spools or cassettes.

3.22. By agreement of the parties, it is allowed to supply wire in coils of increased weight or on large-sized spools.

3.23. Wire in coils (spools, cassettes) should consist of one piece, rolled up in undisturbed rows and tightly rolled in such a way as to exclude the possibility of fluffing up or unwinding the coil. The ends of the wire should be easy to find. Resistance butt welding of separate pieces of wire of the same heat is allowed: in this case, the zone must comply with the requirements of this standard .

3.24. The ultimate tensile strength of alloyed and high-alloyed wire must comply with the standards specified in tab. 7

Notes:

1. Fluctuations of the ultimate tensile strength in one coil of wire with a diameter of more than 1.4 mm should not exceed 98 MPa (10 kgf / mm 2).

2. Alloyed and high-alloyed wire is subjected to additional heat treatment. If the specified limits of ultimate tensile strength are ensured, additional heat treatment of the wire may not be performed.

3.25. An increase in the upper limit of the ultimate tensile strength is allowed (regardless of the purpose of the wire):

up to 110 kgf / mm 2 - for wire with a diameter of more than 2 mm grades:

Sv-06X20N11M3TB (EP89);

Sv-07X25N12G2T (EP75);

Sv-06X25N12TYu and SV-08X25N13BTYu (EP389);

up to 115 kgf / mm 2 - for wire with a diameter of more than 2 mm grades:

Sv-10X16N25AM6 (EI395);

Sv-09X16N25M6AF (EI981A);

SV-01X23N28M3D3T (EP516) and Sv-06X15N60M15;

up to 135 kgf / mm 2 - for wire with a diameter of 2 mm grades:

Sv-08X20N9G7T;

Sv-08X21N10G6;

Sv-10X16N25AM6;

Sv-09X16N25M6AF;

up to 145 kgf / mm 2 - for wire with a diameter less than 2 mm grades:

Sv-08X20N9G7T;

Sv-10X16N25AM6;

Sv-08X21N10G6;

Sv-09X16N25M6AF;

up to 180 kgf / mm 2 - wire grades with a diameter of 2 mm or less grades:

Sv-01X23N28M3D3T (EP516) and Sv-06X15N60M15.

3.26. The surface of the wire must be clean and smooth, without cracks, delamination, captivity, sunsets, shells, nicks, scale, rust, oil and other contaminants. On the surface of the wire, risks (including tight ones), scratches, local ripples and individual dents are allowed. The depth of the indicated defects should not exceed the maximum deviation in the wire diameter.

At the request of the consumer, the wire is manufactured with an improved surface. In this case, small drawing risks, scratches, traces of grinding, local ripples and individual dents are allowed on the surface of the wire, with the depth of each of these defects not exceeding 1/4 of the maximum deviation in diameter.

3.24-3.26. (Modified edition, Amendment No. 2).

3.27. On the surface of low-carbon and alloy wire, the presence of technological lubricants is not allowed, with the exception of: traces of soap grease without graphite and sulfur.

3.28. Wire grades Sv-08GS, Sv-08G2S, Sv-08GSMT, SV-08KhG2S, SV-08KhGSMA, Sv-10KhG2SMA, Sv-08KhGSMFA and Sv-08Kh3G2SM should be manufactured with a copper-plated surface or non-copper-plated. On the surface of a non-copper-plated wire, traces of soap grease up to 0.05% of the wire weight are allowed. The type of wire surface is specified in the order. If the surface type is not specified in the order, the wire surface type is set by the manufacturer

(Modified edition, Amendment No. 5).

3.29. With the consent of the consumer, wire of grades Sv-18KhGS and Sv-18KhMA may be coated with a continuous layer of neutral grease, readily soluble in gasoline, to protect it from corrosion.

3.30. High-alloy wire should be delivered pickled and bleached or after heat treatment in an inert atmosphere with a light, light matt or gray surface, without any traces of grease.

3.3.1. The wire must be accepted by the technical control of the manufacturer. The manufacturer must ensure that the supplied wire meets the requirements of this standard.

4. TEST METHODS

4.1. The wire is supplied in lots. Each batch should consist of one wire grade, one heat, one diameter, one purpose and one type of surface.

4.2. All coils (spools, cassettes) of wire should be inspected and measured.

4.3. The wire diameter is measured with an accuracy of 0.01 mm in two mutually perpendicular directions in each section at least in two places at a distance of at least 5 m from each other.

(Modified edition, Amendment No. 2).

4.6a. To check for traces of soap grease on the surface of the wire, 2% of the coils (coils) are taken from each batch, but not less than three coils (coils). The method for determining the mass of traces of soap grease on the surface of the wire is given in appendix 2.

(Introduced additionally, Amendment No. 5).

4.10. When checking the chemical composition of the wire in accordance with the requirements tab. 2 , pp. 3.7 , 3.9-3.13. and 3.16 the actual nitrogen content in alloyed and high-alloyed wire of grades not specified in p. 3.16 , as well as the actual residual content of aluminum and vanadium in high-alloy wire and tungsten in alloy and high-alloy wire.

The results of this determination are indicated in the quality document.

Determination of nitrogen content in low-carbon wire and arsenic in low-carbon and alloy wire, as well as the residual content of aluminum, molybdenum, titanium and vanadium in alloy wire and copper in all grades is allowed not to be performed if the steel smelting technology guarantees the content of the listed elements within the limits established this standard.