GOST 19281-89

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  ГОСТ 19281-89

GOST 19281−89 (ISO 4950−2-81, ISO 4950−3-81, ISO 4951−79, ISO 4995−78, ISO 4996−78, ISO 5952−83) rolled steel with increased strength. General specifications (with Change No. 1)

GOST 19281−89
(ISO 4950−2-81,
ISO 4950−3-81,
ISO 4951−79,
ISO 4995−78,
ISO 4996−78,
ISO 5952−83)

Group B20

INTERSTATE STANDARD

ROLLED STEEL WITH INCREASED STRENGTH

General specifications

Rolled steel with increased strength. General specifications

____________________________________________________________________
Text Comparison 19281−2014 GOST with GOST 19281−89 see the link.
— Note the manufacturer’s database.
____________________________________________________________________

ISS 77.140.50
OKP 09 2500, 09 3000, 09 7000, 11 2000

Date of introduction 1991−01−01

INFORMATION DATA

1. DEVELOPED AND INTRODUCED by the Ministry of ferrous metallurgy of the USSR

2. APPROVED AND put INTO EFFECT by Decision of the USSR State Committee for standards from 28.09.89 N 2972

3. The standard is in parts comparable strength classes corresponds to ISO 4950−2 for strength classes, E 355, E 390, E 420, except for the requirements relative elongation for classes E and 355 E 390; meets ISO 4950−3 for strength class E 420, with the exception of the requirements on impact toughness KCV at minus 50°; corresponds to ISO 4951, except for the requirements relative elongation for grade E 355; meets ISO 4995 for strength classes HP 275 HP and 355; ISO 4996 for strength classes HS 355, HS HS 390 and 420; meets ISO 5952 for strength class N 355

4. INSTEAD 19281−73 GOST and GOST 19282−73

5. REFERENCE NORMATIVE AND TECHNICAL DOCUMENTS

The designation of the reference document referenced	Item number
GOST 82−70	1.2
GOST 103−2006	1.2
GOST 535−2005	2.1.3, 4.4
GOST 1497−84	4.8
GOST 2590−2006	1.2, Annex 1
GOST 2591−2006	1.2, Annex 1
GOST 7268−82	4.11
GOST 7511−73	1.2
GOST 7564−97	4.6
GOST 7565−81	4.1
GOST 7566−94	2.3, 3.3, 5.1
GOST 8239−97	1.2, Annex 1
GOST 8240−97	1.2, Annex 1
GOST 8278−83	1.2
GOST 8281−80	1.2
GOST 8282−83	1.2
GOST 8283−93	1.2
GOST 8509−93	1.2
GOST 8510−86	1.2, Annex 1
GOST 9234−74	1.2
GOST 9454−78	4.10
GOST 10551−75	1.2
GOST 11474−76	5.1
GOST 12344−2003	4.2
GOST 12345−2001	4.2
GOST 12346−78	4.2
GOST 12347−77	4.2
GOST 12348−78	4.2
GOST 12350−78	4.2
GOST 12351−2003	4.2
GOST 12352−81	4.2
GOST 12355−78	4.2
GOST 12356−81	4.2
GOST 12357−84	4.2
GOST 12358−2002	4.2
GOST 12359−99	4.2
GOST 12361−2002	4.2
GOST 12364−84	4.2
GOST 13229−78	1.2
GOST 14019−2003	4.9
GOST 14635−93	1.2
GOST 14637−89	2.1.3, 4.4
GOST 19425−74	1.2
GOST 19771−93	1.2
GOST 19772−93	1.2
GOST 19903−74	1.2, Annex 1
GOST 21026−75	1.2
GOST 22536.0−87	4.2
GOST 22536.1−88	4.2
GOST 22536.2−87	4.2
GOST 22536.3−88	4.2
GOST 22536.4−88	4.2
GOST 22536.5−87	4.2
GOST 22536.6−88	4.2
GOST 22536.7−88	4.2
GOST 22536.8−87	4.2
GOST 22536.9−88	4.2
GOST 22536.10−88	4.2
GOST 22536.11−87	4.2
GOST 22536.12−88	4.2
GOST 22727−88	2.2.12, 4.5.1
GOST 25577−83	1.2
GOST 26020−83	1.2
GOST 27809−95	4.2

6. Limitation of actions taken by Protocol No. 5−94 of the Interstate Council for standardization, Metrology and certification (ICS 11−12−94)

7. EDITION (Sept 2009) with amendment No. 1, approved in December 1990 (IUS 5−91), Amendment (ICS 8−2004).


This standard applies to plate, universal broadband, shaped, rolled steel and formed sections of high-strength steel used for welded, riveted or bolted structures and used in products, mostly without additional heat treatment.

As part of the rules of the chemical composition standard also applies to a thin sheet, ingots, slabs, blooms, and forgings.

1. ASSORTMENT

1.1. Rental produce strength classes 265, 295, 315, 325, 345, 355, 375, 390 and 440.

1.2. The form, dimensions and limit deviations of the hire must meet the requirements of GOST 8509 — for the corner angle, GOST 8510 — corner angle, GOST 8239 — beams beam, GOST 19425 — beam for beams and channels special, GOST 26020 — for I-beams with parallel flange edges, GOST 8240 — u, GOST 19903 — sheet, GOST 103 — flat and GOST 82 universal broadband rental, 7511 GOST, GOST 8278, 8281 GOST, GOST 8282, 8283 GOST, GOST 9234, 10551 GOST, GOST 13229, 14635 GOST, GOST 19771, 19772 GOST, GOST 25577 — profiles bent, GOST 2590 — round GOST 2591 — square rental; GOST 21026 — for channels with curved shelf.

(Changed edition, Rev. N 1).

1.3. Precision rolled size, flatness, curvature within the limits prescribed in the standards for grades specified by the consumer in the order. If no ordering requirements, the accuracy of manufacturing defines the manufacturer.

1.4. Examples of symbols are given in Appendix 1.

2. TECHNICAL REQUIREMENTS

2.1. Features basic performance

2.1.1. The basic chemical composition for each strength class are shown in Annex 2.

Mass fraction of phosphorus in steel should be no more than 0,035%, sulfur — not more than 0,040%.

The mass fraction of nitrogen in steel is not more than 0,012%, arsenic — not more than 0.08%. For steelmaking from ores of Kerch arsenic — not more than 0.15%, while the mass fraction of phosphorus not more than 0,030%.

List of steel grades recommended for various strength classes and thicknesses shapes and rolled sections are given in Annex 3 of sheet metal is in Annex 4.

2.1.2. Rent manufactured in hot rolled, heat treated condition or after the controlled rolling in accordance with the order. If not specified, the method of manufacture determines the manufacturer.

2.1.3. The surface requirements for the edges and ends of the rental must comply with: a sheet — GOST 14637, sections and profiles — GOST 535.

(Changed edition, Rev. N 1).

2.1.4. Bundles in the leaves are not allowed.

2.1.5. The mechanical properties of tensile and conditions of the bend test should conform to shapes and rolled sections to the requirements of table.1 leaf and universal broadband rental and roll-formed profiles — table.2.

Allowed bending test shapes and of sheet metal thickness up to 22 mm from the manufacturer. The compliance with the standards set by the manufacturer must be guaranteed.

Table 1

Mechanical properties of long products and structural shapes

Class so- ness	The thickness of the products delivered on the strength class, mm, no more	The yield stress , H/mm (kgf/mm)	Temporary resistance , H/mm (kgf/mm)	Elongation , %	Bending to the parallel sides (the specimen thickness, the diameter of the mandrel)
		not less than
265	100	265 (27)	430 (44)	21
Two hundred ninety five	100	295 (30)	430 (44)
325	60	325 (33)	450 (46)
345	20	345 (35)	480 (49)
375	10	375 (38)	510 (52)
390	20	390 (40)	530 (54)	18

Note. When ordering rental 295 strength class of steel grades 09Г2, 09G2D, thickness up to 20 mm, the yield strength shall be not less than 305 H/mm(31 kgf/mm), tensile strength not less than 440 H/mm(45 kgf/mm).

Table 2

Mechanical properties of sheet, strip, universal broadband rental
and bent shape

Class so- ness	The thickness of the products delivered on the strength class, mm, no more	Yield strength H/mm (kgf/mm)	Temporary resistance H/mm (kgf/mm)	Elongation , %	Bending to the parallel sides (the thickness of the sample,  — the mandrel diameter)
		not less than
265	160	265 (27)	430 (44)	21
295	100	295 (30)	430 (44)
315	60	315 (32)	450 (46)
325	60	325 (33)	450 (46)
345	32	345 (35)	490 (50)
355	20	355 (36)	490 (50)
375	50	375 (38)	510 (52)	20
390	50	390 (40)	510 (52)	19
440	32	440 (45)	590 (60)

Note. When ordering a hire class of strength 265 of steel grade 16GS temporary resistance should be not less than 450 H/mm(46 kgf/mm); when ordering, rental 295 strength class of steel grades of steel 09Г2, 09G2D, thickness up to 20 mm, the yield strength shall be not less than 305 H/mm(31 kgf/mm), tensile strength not less than 440 H/mm(45 kgf/mm); when ordering rolled grade 315 steel brand 12GS elongation should not be less than 26%, you will hire 325 strength class of steel grade 09G2S with thickness over 10 up to 20 mm ultimate tensile strength shall be not less than 470 H/mm(48 kgf/mm); when ordering, rental 345 strength class of steel grades 17GS and 17G1S elongation should not be less than 23%.

When ordering rolled grade 345 steel grade 10KHNDP temporary resistance should not be less than 470 H/mm(48 kgf/mm), and elongation not less than 20%.


(Changed edition, Rev. N 1).

2.2. Characteristics of performance that are installed at the customer’s request

2.2.1. Rental with regulated chemical composition.

Chemical composition for the ladle analysis plavonia samples must conform to the standards given in table.3. Ready to hire the allowable deviation on the mass fraction of the elements from the rules given in table.3, should correspond to the table.4.

Note. For rental, designed for welded structures and constructions, in order the establish the grade of steel and the requirements for weldability.

Table 3

Chemical composition of low alloy steels

Steel grade	STE- stump race- KIS- Le niya	Mass fraction of elements, %
		carbon	silicon	manganese	chrome	Nickel	copper	vanadium	other elements
09Г2	SP	Not more than 0.12	0,17…0,37	1,4…1,8	Not more than 0.30	Not more than 0.30	Not more than 0.30	-	-
09G2D		Not more than 0.12	0,17…0,37	1,4…1,8	Not more than 0.30	Not more than 0.30	0,15 0,30…	-	-
12GS		0,09 0,15…	0,5…0,8	0,8…1,2	Not more than 0.30	Not more than 0.30	Not more than 0.30	-	-
16GS		0,12 0,18…	0,4…0,7	0,9…1,2	Not more than 0.30	Not more than 0.30	Not more than 0.30	-	-
14G2		0,12 0,18…	0,17…0,37	1,2…1,6	Not more than 0.30	Not more than 0.30	Not more than 0.30	-	-
17GS		0,14…0,20	0,4…0,6	1,0…1,4	Not more than 0.30	Not more than 0.30	Not more than 0.30	-	-
09G2S		Not more than 0.12	0,5…0,8	1,3…1,7	Not more than 0.30	Not more than 0.30	Not more than 0.30	-	-
09G2SD		Not more than 0.12	0,5…0,8	1,3…1,7	Not more than 0.30	Not more than 0.30	0,15 0,30…	-	-
14KHGS		0,11…0,16	0,4…0,7	0,9…1,3	0,5…0,8	Not more than 0.30	Not more than 0.30	-	-
15KHSND		0,12 0,18…	0,4…0,7	0,4…0,7	0,6…0,9	0,3…0,6	0,2…0,4	-	-
10KHNDP		Not more than 0.12	0,17…0,37	0,3…0,6	0,5…0,8	0,3…0,6	0,3…0,5	-	Phosphorus 0,07 0,12… aluminium 0,08…0,15
17G1S		0,15…0,20	0,4…0,6	1,15 1,6…	Not more than 0.30	Not more than 0.30	Not more than 0.30	-	-
10G2S1		Not more than 0.12	0,8…1,1	1,3 1,65…	Not more than 0.30	Not more than 0.30	Not more than 0.30	-	-
10G2S1D		Not more than 0.12	0,8…1,1	1,3 1,65…	Not more than 0.30	Not more than 0.30	0,15 0,30…	-	-
15GF		0,12 0,18…	0,17…0,37	0,9…1,2	Not more than 0.30	Not more than 0.30	Not more than 0.30	0,05…0,12	-
15GFD		0,12 0,18…	0,17…0,37	0,9…1,2	Not more than 0.30	Not more than 0.30	0,15 0,30…	0,05…0,12	-
10G2B		Not more than 0.12	0,17…0,37	1,2…1,6	Not more than 0.30	Not more than 0.30	Not more than 0.30	-	Niobium 0,02…0,05
10G2BD		Not more than 0.12	0,17…0,37	1,2…1,6	Not more than 0.30	Not more than 0.30	0,15 0,30…	-	Niobium 0,02…0,05
10KHSND		Not more than 0.12	0,8…1,1	0,5…0,8	0,6…0,9	0,5…0,8	0,4…0,6	-	-
15G2SF		0,12 0,18…	0,4…0,7	1,3…1,7	Not more than 0.30	Not more than 0.30	Not more than 0.30	0,05…0,10	-
15G2SFD		0,12 0,18…	0,4…0,7	1,3…1,7	Not more than 0.30	Not more than 0.30	0,15 0,30…	0,05…0,10	-
14G2AF		0,12 0,18…	0,3…0,6	1,2…1,6	Not more than 0.40	Not more than 0.30	Not more than 0.30	0,07 0,12…	Nitrogen Of 0.015…0,025
12G2B		0,10…0,16	0,17…0,37	1,30 1,65…	Not more than 0.30	Not more than 0.30	Not more than 0.30	-	Niobium 0,02…0,04
16G2AF		0,14…0,20	0,3…0,6	1,3…1,7	Not more than 0.40	Not more than 0.30	Not more than 0.30	0,08 0,14…	Nitrogen Of 0.015…0,025
15G2AFD	PS	0,12 0,18…	To 0.17	1,2…1,6	Not more than 0.30	Not more than 0.30	0,2…0,4	0,08…0,15	Nitrogen 0,015…0,030
14G2AFD	SP	0,12 0,18…	0,3…0,6	1,2…1,6	Not more than 0.40	Not more than 0.30	0,15 0,30…	0,07 0,12…	Nitrogen Of 0.015…0,025
16G2AFD		0,14…0,20	0,3…0,6	1,3…1,7	Not more than 0.40	Not more than 0.30	0,15 0,30…	0,08 0,14…	Nitrogen Of 0.015…0,025
18G2AF	PS	0,14 0,22…	Not more than 0,17	1,3…1,7	Not more than 0.30	Not more than 0.30	Not more than 0.30	0,08…0,15	Nitrogen 0,015…0,030
18G2AFD		0,14 0,22…	Not more than 0,17	1,3…1,7	Not more than 0.30	Not more than 0.30	0,15 0,30…	0,08…0,15	Nitrogen 0,015…0,030

Notes:

1. Mass fraction of nitrogen in the steels not alloyed with nitrogen, shall not exceed 0.008%. Allowed mass fraction of nitrogen to 0,012%, while the rental regardless of category must meet the requirements of table.6 and 7 as part of the rules of impact strength after mechanical aging.

2. Allowed the addition of aluminum and titanium from the calculation of obtaining the mass fraction in the hire of aluminium — not more than 0.05%, titanium not more than 0.03%.

3. Mass fraction of phosphorus, sulfur and arsenic in steel must comply with paragraph 2.1.1.

Table 4

The name of the elements	The allowable deviation in the mass fraction of elements, %
Carbon	±0,02
Manganese	±0,1
Silicon Chrome Nickel Copper	±0,005
Sulfur Phosphorus Nitrogen	+0,005
Vanadium	+0,02 -0,01
Niobium	+0,010 -0,005

Note. In the rental of steel grade 10KHNDP permitted deviation in the mass fraction of phosphorus, or 0.03 percent, aluminum %.


(Changed edition, Rev. No. 1 Amendment).

2.2.2. Rental restriction of the mass fraction of phosphorus not more than 0,030%, sulfur — not more than 0,035%.

2.2.3. Rental guarantee weldability.

Weldability of steel is provided by the technology of its manufacture and chemical composition.

(Changed edition, Rev. N 1).

2.2.4. Rental with a normalized carbon equivalent shall be not more than 0.49 for steel of strength class 390, to 0.51 for steel, strength class 440.

2.2.5. Hire class of strength 265, 295, 315 (thickness more than 20 mm), 325 (thickness above 10 mm), 345, 355, 375, 390 and 440 with high resistance against atmospheric corrosion. In this case the mass fraction of copper in steel should be between 0.15% and 0.30%, marking the strength class is added the letter D (for example, 265Д, 295Д).

Note. The rolled steel 09G2D strength class 295 may be fabricated with thickness up to 20 mm.


(Changed edition, Rev. N 1).

2.2.6. Rolled strength classes 315 and 345 with the use of normalization or controlled rolling, strength classes 390, 440 by applying thermal hardening or controlled rolling.

2.2.7. Rental for products performed by chemiluminescence with the use of heat treatment or controlled-rolling specified in the order.

2.2.8. Rolled strength classes 390 and 440 with the restriction of the upper limit of the provisional resistance values not more than 180 N/mm(18 kgf/mm) higher than stated in table.1 and 2.

2.2.9. Rental with normalized toughness.

Depending on the requirements for testing the impact strength rentals are made on the categories indicated in the table.5. The norms of toughness are given in table.6 and 7.

Table 5

Normalized feature

Category

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

The impact strength KCU +20 °C

+

+

Impact strength after mechanical aging

+

+

+

+

+

+

+

The impact strength KCU at -20 °C

+

+

-40 °C

+

+

-50 °C

+

+

-60 °C

+

+

-70 °C

+

+

The impact strength KCV at 0 °C

+

-20 °C

+

Notes:

1. When ordering rental category, providing test samples to the hub of the voltage V, the user can simultaneously specify an additional requirement for the rental in accordance with one of the categories, providing test samples to the hub tension form U.

2. Long products in categories 5−7 and 13−15 did not produce. Shaped profiles in categories 5−7 and 13−15 are made with a thickness up to 11 mm, inclusive.

Table 6

The toughness of the plate and universal broadband rental

Class so- ness	The thickness of rolling, mm			The impact strength KCU, j/cm(kgf·m/cm), at temperature, °C			Impact toughness KCV, j/cm(kgf·m/cm), at temperature, °C		Toughness KCU, j/cm(kgf·m/cm) after mechanical aging at a temperature of, °C
	+20	-40	-70	0	-20	+20
	not less than
265		To	5	-	-	-	-	-	29 (3,0)
	5	«	10 incl.	79 (8,0)	-	-	-	-
	«10	«	20 «
	69 (7,0)	-	-	-	-
	SV. 20	«	160 «	59 (6,0)	29 (3,0)	24 (2,5)	-	-
295		To	5	-	-	-	-	-	29 (3,0)
	5	«	10 incl.	-	34 (3,5)	-	-	-
	SV. 10	«	20 «	-	29 (3,0)	-	-	-
	«20	«	32 «	59 (6,0)	29 (3,0)	24 (2,5)	-	-
	«32	«	60 «	59 (6,0)	29 (3,0)	24 (2,5)	-	-
	«60	«	100 «	59 (6,0)	29 (3,0)	24 (2,5)	-	-
315		To	5	-	-	-	-	-	29 (3,0)
	5	«	10 incl.	-	-	-	-	-
	SV. 10	«	20 «	59 (6,0)	29 (3,0)	24 (2,5)	-	-
	«20	«	32 «	59 (6,0)	29 (3,0)	24 (2,5)	-	-
	«32	«	60 «	59 (6,0)	29 (3,0)	24 (2,5)	-	-
325		To	5	59 (6,0)	39 (4,0)	29 (3,0)	-	-	29 (3,0)
	5	«	10 incl.	59 (6,0)	39 (4,0)	29 (3,0)	-	-
	SV. 10	«	20 «	59 (6,0)	34 (3,5)	29 (3,0)	-	-
	«20	«	32 «	59 (6,0)	29 (3,0)	24 (2,5)	-	-
	«32	«	60 «	59 (6,0)	29 (3,0)	24 (2,5)	-	-
345		To	5	64 (6,5)	39 (4,0)	29 (3,0)	-	-	29 (3,0)
	5	«	10 incl.	64 (6,5)	39 (4,0)	29 (3,0)	-	-
	SV. 10	«	20 «	-	29 (3,0)	29 (3,0)	40 (4,0)	40 (4,0)
	«20	«	32 «	-	29 (3,0)	29 (3,0)	40 (4,0)	40 (4,0)
355		To	5	-	-	-	-	-	29 (3,0)
	5	«	10 incl.	-	-	-	-	-
	SV. 10	«	20 «	-	29 (3,0)	-	-	-
375		To	5	-	39 (4,0)	34 (3,5)	-	-	29 (3,0)
	5	«	10 incl.	-	39 (4,0)	34 (3,5)	-	-
	SV. 10	«	20 «	-	39 (4,0)	29 (3,0)	-	-
	«20	«	32 «	-	39 (4,0)	29 (3,0)	-	-
	«32	«	50 «	-	39 (4,0)	29 (3,0)	-	-
390		To	5	-	44 (4,5)	34 (3,5)	-	-	29 (3,0)
	5	«	10 incl.	-	44 (4,5)	34 (3,5)	-	-
	SV. 10	«	15 «	-	39 (4,0)	29 (3,0)	40 (4,0)	-
	«15	«	32 «	-	39 (4,0)	29 (3,0)	40 (4,0)	40 (4,0)
	«32	«	50 «	-	39 (4,0)	29 (3,0)	40 (4,0)	40 (4,0)
440		To	5	-	44 (4,5)	34 (3,5)	-	-	29 (3,0)
	5	«	10 incl.	-	44 (4,5)	34 (3,5)	-	-
	SV. 10	«	20 «	-	39 (4,0)	29 (3,0)	-	-
	«20	«	32 «	-	39 (4,0)	29 (3,0)	-	-

Notes:

1. In the absence of norms of KCV impact strength testing is carried out for a dataset, then set the standards. Test results shall be recorded in the document about quality.

2. Impact toughness KCU for the category of order 3 must be not less than the standards established for a category of order 4. Impact toughness KCU for the order categories 5 and 6 should not be below the standards set for category 7.

3. For rent 265 strength class of steel grade 09G2S impact strength KCU at a testing temperature of minus 40 °C shall be not less than 34 j/cm(3,5 kgf·m/cm), the test temperature minus 70 °C — not less than 29 j/cm(3.0 kgs·m/cm).

4. For the rental of a strength class of steel grades 295 09Г2, 09G2D for thicknesses from 20 to 32 mm incl. the impact strength KCU should be not less than 39 j/cm(4.0 kg·m/cm) at testing temperature of minus 40 °C.

5. For rent 325 strength class of steel 14G2 for thicknesses from 5 to 20 mm, the impact strength KCU at a testing temperature of minus 40 °C reduced by 5 j/cm(0.5 kgf·m/cm).

6. For rental grade 345 in thicknesses from 5 to 10 mm incl. of steel grade 17GS, the impact strength KCU at a testing temperature of minus 40 °C should not be less than 44 j/cm(4.5 kgf·m/cm), made of steel 09G2S when the test temperature minus 70 °C is not less than 34 j/cm(3,5 kgf·m/cm).

7. For rental of all strength classes with specified chemical composition of steel grades 09Г2, 14G2, 12GS, 17GS, 17G1S, 15GF, 15G2SF, 10G2B, 12G2B, 14KHGS and 10KHNDP norms impact toughness KCU at the test temperature minus 70 °C until 01.01.93 rejection symptom was not determined for this set of statistics.

8. For rental of strength class 390 with a thickness of 15 to 40 mm inclusive of steel 10KHSND in the impact strength KCU at a testing temperature of minus 40 °C should not be less than 49 j/cm(5,0 kgf·m/cm).

Table 7

Impact strength long products, strip and shaped rolled

Strength class	The thickness of rolling, mm	The impact strength KCU, j/cm(kgf·m/cm), at temperature, °C				Impact toughness KCV, j/cm(kgf·m/cm), at temperature, °C		The impact strength KCU, j/cm (kgf·m/cm) after mechanical aging at a temperature of, °C
		+20	-40	-70		0	-20	+20
		not less than
265	Up to 20	98 (10,0)	-		-	-	-		29 (3,0)
	SV. 20 «32 incl.	-	29 (3,0)		-	-	-
	«32» 100 «	59 (6,0)	29 (3,0)		-	-	-
295	To 10	98 (10,0)	39 (4,0)		29 (3,0)	-	-		29 (3,0)
	From 10 «to 20 incl.	98 (10,0)	29 (3,0)		29 (3,0)	-	-
	SV. 20 «32 «	-	29 (3,0)		-	-	-
	«32» 60 «	59 (6,0)	29 (3,0)		-	-	-
	«60» 100 «	59 (6,0)	29 (3,0)		-	-	-
325	To 5	64 (6,5)	34 (3,5)		34 (3,5)	34 (3,5)	34 (3,5)		29 (3,0)
	5 «10 incl.	64 (6,5)	34 (3,5)		34 (3,5)	34 (3,5)	34 (3,5)
	SV. 10 «20 «	59 (6,0)	29 (3,0)		29 (3,0)	34 (3,5)	34 (3,5)
	«20 «32"	59 (6,0)	29 (3,0)		-	-	-
	«32 «60»	59 (6,0)	29 (3,0)		-	-	-
345	To 5	64 (6,5)	39 (4,0)		29 (3,0)	40 (4,0)	40 (4,0)		29 (3,0)
	5 «10 incl.	64 (6,5)	39 (4,0)		29 (3,0)	40 (4,0)	40 (4,0)
	SV. 10 «20 «	-	29 (3,0)		-	-	-
375	To 5	-	39 (4,0)		-	-	-		29 (3,0)
	5 «10	-	39 (4,0)		-	-	-
	SV. 10	-	29 (3,0)		-	-	-
390	To 5	-	39 (4,0)		34 (3,5)	-	-		29 (3,0)
	5 «10 incl.	-	39 (4,0)		34 (3,5)	-	-
	SV. 10 «15 «	-	34 (3,5)		29 (3,0)	-	-
	«15 «20"	-	34 (3,5)		-	-	-

Notes:

1. In the absence of norms of KCV impact strength testing is carried out for a dataset, then set the standards. Test results entered in the document about quality.

2. Impact toughness KCU for category 3 of the order should be not below established for the categories of order 4. Impact toughness KCU for the categories of order 5 and 6 should not be below the standards set for category 7.

3. For rent 325 strength class of steel grade 09G2S with thickness from 5 mm to 32 mm incl. impact toughness KCU at a testing temperature of minus 40 °C increases by 5 j/cm(0.5 kgf·m/cm).

4. For rent 345 strength class of steel grade 09G2S with thickness from 5 to 10 mm incl. the impact strength KCU at the test temperature minus 70 °C shall be not less than 34 j/cm(3,5 kgf·m/cm).

5. For rental of strength class 390 of steel 10KHSND with a thickness of 5 to 10 mm incl. impact toughness KCU at a testing temperature of minus 40 °C must be at least 49 j/cm(5,0 kgf·m/cm) with a thickness of more than 10 to 15 mm incl. — not less than 39 j/cm(4.0 kg·m/cm).


(Changed edition, Rev. N 1).

2.2.10. Rental service with descaling.

2.2.11. Rental service with deburring and without contortion.

2.2.12. Rental with ultrasonic testing.

The class of the continuity sheets is determined by agreement between manufacturer and consumer in accordance with GOST 22727. Control the marginal zones are produced on customer requirement.

(Changed edition, Rev. N 1).

2.2.13. Hire regulated upper yield point.

2.3. Labeling and packaging of rolled according to GOST 7566.

3. ACCEPTANCE RULES

3.1. Rules of acceptance of the rent according to GOST 7566 with additions. Rental take parties. The party should consist of the rental of the same strength, the same size in thickness, one mode of heat treatment of steel, one of the basic chemical composition. The weight of the batch shall not exceed 350 T.

Party rental of steel with regulated chemical composition and poured into ingots should be, in addition, one melting ladle; the party rolled steel produced by continuous casting (CCM), the difference in the mass fraction of carbon in the steel shall not exceed 0.04 percent and the mass fraction of manganese — 0.15 percent by ladle analysis.

Each party rental is accompanied by a document about quality that contains:

trademark or the name and trademark of manufacturer;

the name of the consumer;

order number;

the date of the statement of quality document;

the number of the wagon or vehicle;

the name of product, dimensions, number of seats, their total mass and, in the case of delivery on acceptance (theoretical) mass — sign TM;

strength class;

the actual chemical composition;

precision rolling;

mechanical properties;

kind of flatness to the sheet;

the nature of the edges of the sheet;

group surface quality to rolled;

a heat treatment process (as delivered rolled in a thermally treated condition);

the number of NTD;

stamp of technical control Department.

For rental, taken with the characteristics set by the user in accordance with paragraph 2.2, the document about the quality additionally indicate the results of the tests on ordered indices.

For rental, accept with specified chemical composition, the document on the quality indicate the grade of steel, the chemical composition and the melting number, the batch number, if melting is divided into the party. For rental guarantee weldability further specify the designation of St.

(Changed edition, Rev. N 1).

3.2. To check the quality of hire from each batch are selected for two rods or two leaves, two bands, and one roll.

3.3. If unsatisfactory test results of at least one indicator repeat tests are carried out in accordance with GOST 7566.

4. CONTROL METHODS

4.1. Sampling for the determination of chemical composition is carried out according to GOST 7565.

4.2. Chemical analysis were carried out according to GOST 22536.0 to GOST 22536.12, GOST 27809,12344 GOST — GOST 12352, 12355 GOST — GOST 12359, GOST 12361, 12364 GOST, GOST 18895, GOST 28473 or other methods providing the required accuracy of the analysis.

The differences in the evaluation of the quality assessment is carried out by the methods established in the standard.

(Changed edition, Rev. N 1).

4.3. Carbon equivalent () is calculated by the formula

, (1)

where , , , , , , ,  — mass fraction of carbon, manganese, silicon, chromium, Nickel, copper, vanadium and phosphorus

.

4.4. Control of surface quality and dimensions of sheet metal — according to GOST 14637, long products — according to GOST 535.

4.5. The bundle rolled in cutting control inspection of edges and ends without the use of magnifying devices.

If necessary, the quality of the metal on the edges of the sheets and versatile stripes test by removing the chip: the chip split is a sign of discontinuity flaws of metal.

4.5.1. Ultrasonic testing of sheet metal is carried out under shot 22727.

4.6. Sampling and preparation of samples for mechanical and technological tests carried out according to GOST 7564. From structural shapes and universal strip samples, cut along the sheet across the direction of rolling. When testing the impact strength on samples with sharp notch samples taken along the direction of rolling.

For rental with a diameter or a side of a square more than specified in table.1 and 7 allowed the mechanical properties to determine on samples cut from billets was forged or laminated on the size of PL table.1 and 7. Norms of mechanical properties in this case should correspond to the table.1 and 7.

(Changed edition, Rev. N 1).

4.7. From each selected control rod, sheet, strip, universal, roll is taken for tensile tests and bending on the same model, to determine the toughness — two samples for each temperature. The quality of bent profiles control on the workpiece.

4.8. The test bars in tension is carried out on the samples five times the length according to GOST 1497.

(Changed edition, Rev. N 1).

4.9. The bend test is carried out according to GOST 14019.

4.10. Determination of impact strength steel with a nominal thickness of 10 mm inclusively carried out on samples of type 1, 2 or 3, and for categories 8 and 9 — type 11, 12, 13 churchyard 9454. For rental more than 10 mm thickness impact strength is determined on samples of type 1, and for categories 8 and 9 — type 11 according to GOST 9454.

Impact strength and shapes of the rolled strip with a thickness of 3−4 mm, sheet metal thickness less than 5 mm is allowed to determine on the samples having a width equal to the thickness of the rental.

(Changed edition, Rev. N 1).

4.11. Impact strength after mechanical aging is determined according to GOST 7268 on the samples with the hub view U. the Thickness of the samples shall conform to clause 4.10.

4.12. After testing with the hub of the U allowed the reduction of impact strength on the same sample at 15%, after testing with the hub of the V allowed the reduction of impact strength on the same sample at 30% while the average value of test results must be below the rules table.6 and 7.

4.13. When using the manufacturer’s statistical and other non-destructive methods of control of mechanical properties in accordance with the normative-technical documentation, control of mechanical properties by the manufacturer according to the method specified in this standard, is allowed not to perform. The manufacturer guarantees the compliance of products to requirements of this standard. The differences in quality assessment and periodic quality checks of product is used control methods stipulated by this standard.

5. TRANSPORTATION AND STORAGE

5.1. Transportation and storage — by GOST 7566, roll — formed profiles according to GOST 11474.

ANNEX 1 (mandatory). EXAMPLES OF SYMBOLS

ANNEX 1
Mandatory

Hire steel hot-rolled shapes, the usual accuracy of rolling (In), beam beam number 30 GOST 8239−89, strength class 345:

.

Bicycle shaped hot rolled channel number 20 with parallel flange edges (P) churchyard 8240−97, grade 315:

.

.
Hire steel hot-rolled shapes, the usual accuracy of rolling (In) angle angle dimensions 63х40х4 mm according to GOST 8510−86, strength class 345:

.

Black bars, hot rolled square, the usual accuracy of rolling (B1) with a side of 50 mm square according to GOST 2591−2006, grade 315:

.

Black bars, hot rolled round, the usual accuracy of rolling (B1) with a diameter of 40 mm according to GOST 2590−2006, the first group, the ninth category, grade 345:

.

The rolled sheet, normalized, increased accuracy of rolling (A), high flatness (PV), with cut edge (About) size 8х1100х5000 mm according to GOST 19903−74, strength class 390 of steel 10KHSND:

.

Hot-rolled steel sheets, the normal accuracy of rolling (B), the normal flatness (PN) mill edge (BUT) the size 16х1200х6000 mm according to GOST 19903−74, grade 325 of steel grade 16GS, with a guarantee of weldability (SV), 12 categories:

.

(Changed edition, Rev. N 1).

ANNEX 2 (informative). THE BASIC CHEMICAL COMPOSITION OF STEEL

ANNEX 2
Reference

Table 8

Strength class	The basic chemical composition, mass fraction, %	Additional alloying
265, 295	C to 0.14	Al up to 0.03
	Si «0,5	Ti «0,03
	Mn «1,6
315	C to 0.18	Al up to 0.03
	Si «0,7	Ti «0,03
	Mn «1,6
325	C to 0.20	Al up to 0.03
	Si «0,9	Ti «0,05
	Mn «1,6	V «0,10
345, 355, 375	C to 0.22	Al up to 0.03
	Si «0,9	Ti «0,05
	Mn «1,6	V «0,10
		Nb «0,02
		N «of 0.03
375, 390	C to 0.22	Al up to 0.03
	Si «1,1	Ti «0,05
	Mn «1,8	V «0,10
		Nb «0,03
		N «of 0.03
440	C to 0.22	Al up to 0.03
	Si «1,1	Ti «0,05
	Mn «1,8	V «0,15
		Nb «0,05
		N «of 0.03

Note. To ensure the required level of properties applies processing liquid steel with synthetic slag, evacuation, purging with argon, the modification of steel by calcium and rare earth elements is based on introducing into the metal not more than 0.02% calcium and 0.05% of rare earth elements.

APPENDIX 3 (reference). STEEL GRADE FOR LONG PRODUCTS, STRIP AND SHAPED ROLLED

APPENDIX 3
Reference

Table 9

Strength class	The thickness of the products delivered on the strength class, mm				The grade of steel, providing the strength class with different thickness of the rolled	Stamps, providing the class with strength strengthening treatment
265		To	20		St3sp	-
	20	«	100	incl.	09G2S
295		To	20		09Г2	St3sp*
	SV. 20	«	32	incl.	09G2S, 09Г2	-
	«32	«	100	«	10G2S1	-
325		To	20	incl.	09G2S	St3sp*
	«	32	«		14G2, 15GF, 15KHSND	-
	SV. 10	to	60	«	10G2S1	-
345		To	10	incl.	09G2S, 10G2S1,	09Г2*, st3sp*
	10	«	20	«	10KHNDP, 15KHSND 15GF	St3sp*
375		To	10	incl.	15GF, 10G2B	-
390		To	15	incl.	10KHSND	-
	«	20	«		15G2SF	-
_______________ * Regulated or controlled rolling, or accelerated cooling.

ANNEX 4 (reference). STEEL GRADES FOR SHEET, UNIVERSAL BROADBAND RENTAL AND ROLL-FORMED PROFILES

ANNEX 4
Reference

Table 10

Strength class	The thickness of the products delivered on the strength class, mm					The grade of steel, providing the strength class with different thickness of the rolled	Stamps, providing the class with strength strengthening treatment
265	To	20	incl.	St3sp	-
	SV. 20		«	160	«	09G2S, 16GS	-
295	To	20	incl.	09Г2	St3sp*
	SV. 20		«	32	«	09G2S, 09Г2, 16GS	-
	«32		«	100	«	10G2S1	-
315	To	10	incl.	12GS	St3sp*
	10		«	20	«	16GS	St3sp*
	«20		«	60	«	10G2S1	09G2S*, 17G1S*
325	To	10		16GS	St3sp*
	10		«	20	incl.	09G2S, 17GS, 10G2S1	St3sp*
	SV. 20		«	32	«	15GF	-
	«	32	«	14G2	-
	20		«	60	«	10G2S1	17G1S*
345	To	10		09G2S, 17GS, 10KHNDP, 10G2S1, 14KHGS	St3sp*
	10		«	20	incl.	15GF, 17G1S	St3sp*
	«	32	«	15KHSND	17G1S*
355	To	5		10G2S1	-
	«	10		17G1S	-
	10		«	20	incl.	15GF	17G1S
375	To	10		15GF, 10G2B	-
	From	10	«	32		14G2AF	09G2S*
	«	32	«	50	incl.	14G2AF	17G1S**
390	To	10	incl.	12G2B		-
	«	32	«	15Г2АФДпс, 15G2SF		14G2**, 10G2S1**
	«	40	«	10KHSND		-
	«	50	«	14G2AF		-
	SV. 32		to	50	«	16G2AF		-
440	To	32	incl.	16G2AF, 18Г2АФпс		-
_____________ * Regulated or controlled rolling or accelerated cooling. ** Tempering plus vacation.

APPS 3, 4. (Changed edition, Rev. N 1).