GOST 5520-79

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  ГОСТ 5520-79

GOST 5520−79 sheet products of carbon, low alloy and alloy steel for boilers and vessels working under pressure. Technical specifications (Changes No. 1−4)

GOST 5520−79

Band Q23

INTERSTATE STANDARD

SHEET PRODUCTS OF CARBON, LOW ALLOY AND ALLOY STEEL FOR BOILERS AND VESSELS WORKING UNDER PRESSURE

Specifications

Rolled carbon, low-alloy and alloy steel sheets and plates for boilers and pressure vessels. Specifications

ISS 77.140.30
OKP 09 7100, 8100 09

Date of introduction 1980−01−01

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 13.02.79 N 545

Change No. 4 adopted by the Interstate Council for standardization, Metrology and certification (Protocol No. 12, 21.11.97)

The adoption voted:

The name of the state	The name of the national authority for standardization
The Republic Of Azerbaijan	Azgosstandart
The Republic Of Armenia	Armastajad
The Republic Of Belarus	Gosstandart Of Belarus
Georgia	Gosstandart
The Republic Of Kazakhstan	Gosstandart Of The Republic Of Kazakhstan
Kyrgyz Republic	Kyrgyzstandart
The Republic Of Moldova	Moldovastandart
Russian Federation	Gosstandart Of Russia
The Republic Of Tajikistan	Tajikistandart
Turkmenistan	The main state inspection of Turkmenistan
The Republic Of Uzbekistan	Standards
Ukraine	Gosstandart Of Ukraine

3. REPLACE GOST 5520−69

4. The standard fully complies ST SEV 103−74

5. Standard uniform with OBD 5930−76*

6. REFERENCE NORMATIVE AND TECHNICAL DOCUMENTS

The designation of the reference document referenced	Item number
GOST 1497−84	5.10
GOST 7268−82	5.13
GOST 7564−97	5.2
GOST 7565−81	4.4
GOST 7566−94	4.1 a, 4.5, 6.1
GOST 9454−78	5.13
GOST 9651−84	5.11
GOST 10243−75	5.12
GOST 12344−88	5.1
GOST 12345−2001	5.1
GOST 12346−78	5.1
GOST 12347−77	5.1
GOST 12348−78	5.1
GOST 12349−83	5.1
GOST 12350−78	5.1
GOST 12351−81	5.1
GOST 12352−81	5.1
GOST 12354−81	5.1
GOST 12355−78	5.1
GOST 12356−81	5.1
GOST 12358−2002	5.1
GOST 12359−99	5.1
GOST 12361−2002	5.1
GOST 14019−80	5.15
GOST 18895−97	5.1
GOST 19903−74	2.2, 5.17
GOST 22536.0−87	5.1
GOST 22536.1−88	5.1
GOST 22536.2−87	5.1
GOST 22536.3−88	5.1
GOST 22536.4−88	5.1
GOST 22536.5−87	5.1
GOST 22727−88	3.22, 5.18
GOST 28473−90	5.1
GOST 28870−90	5.19

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

8. EDITION (July 2003) with Changes 1, 2, 3, 4, approved in September 1982, may 1985, March 1990, November 1997 (ICS 1−83, 8−85, 6−90, 6−98), Amended (ICS 1−2000, 7−2002)


This standard covers rolled sheet of carbon, low alloy and alloy steels with a thickness from 4 mm to 160 mm in hot rolled and heat-treated, suitable for welding and intended for the manufacture of parts of boilers and vessels working under pressure at ambient, elevated and sub-zero temperatures.

(Changed edition, Rev. N 4).

1. BRAND

1.1. Sheets are produced from the following steel grades:

15K, 16K, 18K, 20K, 22K — carbon;

09G2S, 16GS, 10G2S1; 17GS, 17G1S, 14KHGS — low alloy;

12KHM, 10KH2M, 12KH1MF — doped.

From 01.01.91 steel grades 15K and 14KHGS not allowed to use in the newly created and upgraded technology.

(Changed edition, Rev. N 3).

1.2. The chemical composition of the steel grades shall conform to the standards specified in table.1.

Table 1

Steel grade	Mass fraction of elements, %
	Carbon	Silicon	Manganese	Sulfur	Phosphorus	Chrome	Nickel	Molybdenum
				no more
15K	0,12−0,20	0,15−0,30	0,35−0,65	0,040	0,040	-	-	-
16K	0,12−0,20	0,17−0,37	0,45−0,75	0,040	0,040	-	-	-
18K	0,14−0,22	0,17−0,37	0,55−0,85	0,040	0,040	-	-	-
20K	0,16−0,24	0,15−0,30	0,35−0,65	0,040	0,040	-	-	-
22K	0,19−0,26	0,17−0,40	0,7−1,0	0,035	0,040	-	-	-
12KHM	Not more than 0.16	0,17−0,37	0,4−0,7	0,025	0,025	0,8−1,10	Not more than 0.30	0,40−0,55
10KH2M	0,08−0,12	0,17−0,37	0,4−0,7	0,020	0,020	2.0 to 2.5	Not more than 0.30	0,60−0,80
12KH1MF*	0,08−0,15	0,17−0,37	0,4−0,7	0,025	0,025	0,9−1,2	Not more than 0.30	0,25−0,35
09G2S	He more than 0.12	0,5−0,8	1,3−1,7	0,040	0,035	-	-	-
16GS	0,12−0,18	0,4−0,7	0,9−1,2	0,040	0,035	-	-	-
10G2S1	Not more than 0.12	0,8−1,1	1,3−1,65	0,040	0,035	-	-	-
17GS	0,14−0,20	0,4−0,6	1,0−1,4	0,040	0,035	-	-	-
17G1S	0,15−0,20	0,4−0,6	1,15−1,6	0,040	0,035	-	-	-
14KHGS	0,11−0,16	0,4−0,7	0,9−1,3	0,040	0,035	0,5−0,8	-	-
_________________ * Mass fraction of vanadium of 0.15%-0,30%.

(Changed edition, Rev. N 1, 2, 3).

1.3. At the request of the consumer, carbon and low alloy steels mass fraction of sulfur should not exceed 0,025; or 0,030 0,035%; phosphorus — or 0,030 0,035%.

(Changed edition, Rev. N 3).

1.4. Sheets thicker than 20 mm of steel grades 15K and 20K is allowed the mass fraction of manganese up to 0.8%.

1.5. Mass fraction of chromium, Nickel and copper in carbon and low alloy steel shall not exceed 0.30 percent each. At the request of the consumer the total mass fraction of not more than 0.60 percent (the OS).

Mass fraction of copper in the alloy steels should not exceed 0.20% and in the manufacture of scrap process not more than 0.30%.

In low alloy steels allowed the addition of aluminum and titanium at the rate obtaining in the rolled mass fraction of aluminum of not more than 0.05%, titanium not more than 0.03%.

Mass fraction of aluminium in alloy steels should not exceed 0.02%.

(Changed edition, Rev. N 3, 4).

1.6. Mass fraction of arsenic in carbon and low alloy steels — not more than 0.08%. For steelmaking from ores of Kerch allowed arsenic to 0.15%, while the mass fraction of phosphorus not more than 0,030%.

1.7. Mass fraction of residual nitrogen in carbon and low alloy steel shall be not more than 0,008%, and smelting in electric furnaces — not more than 0,012%.

Notes:

1. Allowed to steel produced in all kinds of aggregates, the mass fraction of nitrogen to 0,012%.

2. Regardless of the method of smelting and category a sheet of steel with a mass fraction of nitrogen of more than 0,008% must be able to withstand the test of mechanical aging.


(Changed edition, Rev. N 4).

1.8. Ready rent limit deviations of chemical composition should conform to the standards specified in table.1A.

In the rolling of steel grades 20K and 22K plus variations in carbon are not allowed.

Table 1A

The class began	Maximum deviation in ready rental, %
	Carbon	Manganese	Silicon	Chrome	Molybdenum	Vanadium	Sulfur	Phosphorus
Carbon	+0,03	+0,05	+0,03	-	-	-	+0,005	+0,005
	-0,02	-0,03	-0,02
Low alloy	±0,02	±0,10	±0,05	±0,05	-	-	+0,005	+0,005
Alloy	±0,01	±0,02	±0,02	±0,05	±0,02	±0,02	+0,005	+0,005

(Changed edition, Rev. N 3).

2. ASSORTMENT

2.1. Depending on the steel grade, the thickness of the sheets needs to match the table.2.

Table 2

Steel grade	Thickness, mm
15K, 16K, 18K, 20K	4−60
22K	25−70
09G2S, 16GS	4−160
10G2S1	4−160
17GS, 17G1S	4−50
12KH1MF	4−40
12KHM	4−160
10KH2M	8−50
14KHGS	4−10

(Changed edition, Rev. N 1, 2, 3).

2.2. For dimensions, limit deviations and other requirements the steel must correspond to GOST 19903.

Examples of symbols

Rolled sheet normal accuracy of rolling (B), the normal flatness (MON), obraznymi edges (O), size 20х2000х6000 mm of steel grade 16GS, limiting the total mass fraction of residual elements of chromium, Nickel and copper not more than 0.60 percent (the operating system); category 3 without heat treatment:

Rolled sheet normal accuracy of rolling (B), the normal flatness (MON), neobreznye edges (NO), size 12х1500х6000 mm of steel grade 20K, category 4, purified from dross (OP), normalized (N):

Rolled sheet normal accuracy of rolling (B), improved flatness (PU), with obraznymi edges (O), size 20х1500х4000 mm, of steel grade 16GS, category 18, with the definition of the yield strength at a temperature of 300 °C (300), with the restriction of the upper limit of the temporary resistance not more than 640 N/mm(M1), heat-treated (I):

Sheet metal high precision rolling (A), the normal flatness (MON), obraznymi edges (O), size 10х1800х6000 mm of steel grade 16K, category 22, with the definition of relative narrowing in the direction of thickness of rolled steel (M2), thermally treated (THAT):

(Changed edition, Rev. N 4).

3. TECHNICAL REQUIREMENTS

3.1. The sheets are produced at mills tile porolono or rolling and subsequent cutting into sheets in accordance with the requirements of this standard. The purpose and conditions of use sheets intended for boiler facilities, are governed by the rules established by bodies of Gosgortekhnadzor of the Russian Federation.

(Changed edition, Rev. N 4).

3.2. Depending on the specified mechanical properties of sheets made according to the categories specified in the table.3. Category set by the user. In the absence of instructions, the category is set by the manufacturer.

Table 3

Normalized feature

Category

2**

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

Chemical composition

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

Mechanical properties tensile and cold bending

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

Impact strength at a temperature of +20 °C

+

+

+

Impact strength after mechanical aging at a temperature of +20 °C

+

+

+

+

+

+

+

+

Toughness :

-20 °C

+

+

-40 °C

+

+

-50 °C

+

+

-60 °C

+

+

-70 °C

+

+

The yield strength at elevated temperatures*

+

+

The yield strength at elevated temperatures, toughness at one of sub-zero temperatures* and after mechanical aging

+

Toughness :

+20 °C

+

0 °C

+

-20 °C

+

-40 °C

+

____________________ * Test temperature is specified in the order. ** For sheet thickness up to 12 mm.

(Changed edition, Rev. N 1, 4; Amendment 1−2000 IUS, 7−2002).

3.3. Categories depending on the grade of steel are given in table.3A.

Table 3A

Steel grade	Category
15K, 16K, 18K, 22K	2−4, 10, 16, 18−21
20K	2−5, 10, 11, 16, 18−21
16GS, 09G2S, 10G2S1	2−18, 19−22
17GS, 17G1S, 14KHGS	2−6, 10−12, 16, 18−22
12KHM, 10X2M, 12KH1MF	2−3, 16, 18−20

Note. Leaves categories 16, 17, 18 are made of a thickness of 12−60 mm, and of steel grade 22K — 25−70 mm.


(Changed edition, Rev. N 4).

3.4. (Deleted, Rev. N 1).

3.5. Sheets of steel grades 16K and 18K are made with the normalization (N). At the request of the consumer the sheets of steel of these brands are made without normalization.

Sheets of steel grades 15K and 20K are made without normalization.

At the request of the consumer the sheets of steel grades 15K and 20K are made in the normalized condition (N).

Sheets of steel grade 22K with thickness up to 35 mm inclusive manufactured without heat treatment or heat-treated (I), of a thickness exceeding 25 mm, without heat treatment.

(Changed edition, Rev. N 1, 2, 3, 4).

3.6. Sheets of low-alloy steel category 2−6, 10−12, 16, 18, 19, 20 manufactured without heat treatment or heat-treated, including with the rolling heat (SOMETHING); categories 7−9, 13−15, 17, 21, 22 — thermally processed (after normalization or hardening with tempering).

Sheets of steel grades 17GS, 17G1S all thicknesses, sheets of steel 10G2S1 thickness more than 20 mm of categories from 4 to 15, 17, 20−22 produce thermally processed (after normalization or hardening with tempering).

By agreement with the consumer allowed to produce sheets without heat treatment, provided that the mechanical properties specified for heat-treated samples correspond to the values specified in table.4.

Table 4

Mechanical properties of the sheets at a temperature of (+20) °C

Steel grade	The thickness of sheet, mm				Yield strength, N/mm (kgf/mm), not less than	Tensile strength, N/mm(kgf/mm)	Elongation , %, not less	Impact strength , not less
				J/cm(kgf·m/cm)	after mechanical aging*, j/cm(kgf·m/cm)
15K			To	5	225 (23)	370−480 (38−49)	27	-	-
	From	5	«	20	225 (23)	370−480 (38−49)	27	69 (7)	34 (3,5)***
	«	21	«	40	215 (22)	370−480 (38−49)	Twenty six	64 (6,5)	29 (3)
	«	41	«	60	205 (21)	370−480 (38−49)	25	69 (7)	29 (3)
16K			To	5	255 (26)	400−490 (41−50)	22	-	-
	From	5	«	20	255 (26)	400−490 (41−50)	22	69 (7)	34 (3,5)***
	«	21	«	40	245 (25)	400−490 (41−50)	22	69 (7)	34 (3,5)
	«	41	«	60	235 (24)	400−490 (41−50)	22	69 (7)	34 (3,5)
18K			To	5	275 (28)	430−520 (44−53)	20	-	-
	From	5	«	20	275 (28)	430−520 (44−53)	20	59 (6)	29 (3)***
	«	21	«	40	265 (27)	430−520 (44−53)	20	59 (6)	29 (3)
	«	41	«	60	255 (26)	430−520 (44−53)	20	59 (6)	29 (3)
20K			To	5	245 (25)	400−510 (41−52)	25	-	-
	From	5	«	20	245 (25)	400−510 (41−52)	25	59 (6)	29 (3)***
	«	21	«	40	235 (24)	400−510 (41−52)	24	54 (5,5)	24 (2,5)
	«	41	«	60	225 (23)	400−510 (41−52)	23	49 (5)	24 (2,5)
22K	From	25	to	60	265 (27)	430−590 (44−60)	22	59 (6)	29 (3)
	SV.	60	«	70	255 (26)	430−590 (44−60)	22	59 (6)	29 (3)
12KH1MF			To	5	295 (30)	440−590 (45−60)	21	-	-
						470−640 (48−65)*
	From	5	«	40	295 (30)	440−590 (45−60)	21	79 (8)	-
						470−640 (48−65)*
12KHM			To	5	245 (25)	430−550 (44−56)	22	-	-
	From	5	«	50	245 (25)	430−550 (44−56)	22	59 (6)	-
	«	51	«	100	235 (24)	Not less than 430 (44)**	20	49 (5)	-
						At least 420 (43)**	18	39 (4)	-
10KH2M	From	8	to	50	295 (30)	390−590 (40−60)	20	98 (10)	-
						450−590 (46−60)*
_____________________ * Applies to legal relations. ** The value of the upper limit of the interim resistance for the sheets with thickness of 50−100 mm are established by agreement between manufacturer and consumer. *** Rules are to be rolled to a thickness of 7 mm or more.

(Changed edition, Rev. N 4).

3.7. Sheets of steel grades 12KHM, 10KH2M, 12KH1MF produce thermally processed.

3.8. Mechanical properties and test results sheets in bending should be:

carbon and alloy steel — the standards specified in table.4 and 5;

of low-alloy steel standards specified in table.4A and 5.

Table 4A

Steel grade	The thickness of the sheet, mm					Yield strength, N/mm (kgf/mm)	Temporary resistance tion , N/mm(kgf/mm)	Take tional elongation, %	Impact strength , j/cm(kgf·m/cm), at temperature, °C			Impact strength after mechanical aging at +20 °C j/cm(kgf·m/cm)
				+20	-40	-70
	not less than
09G2S	To	5				345 (35)	490 (50)	21	-	-	-	-
	From	5	to	10		345 (35)	490 (50)		64 (6,5)	39 (4,0)	34 (3,5)	29 (3,0)
	«	10	«	20	incl.	325 (33)	470 (48)		59 (6,0)	34 (3,5)	29 (3,0)
	SV.	20	«	32	«	305 (31)	460 (47)		59 (6,0)	34 (3,5)	29 (3,0)
	«	32	«	60	«	285 (29)	450 (46)		59 (6,0)	34 (3,5)	29 (3,0)
	«	60	«	80	«	275 (28)	440 (45)		59 (6,0)	34 (3,5)	29 (3,0)
	«	80	«	160	«	265 (27)	430 (44)		59 (6,0)	34 (3,5)	29 (3,0)
10G2S1	To	5				355 (36)	490 (50)	21	-	-	-	-
	From	5	to	10		345 (35)	490 (50)		64 (5,5)	39 (4,0)	29 (3,0)	29 (3,0)
	«	10	«	20	incl.	335 (34)	480 (49)		59 (6,0)	29 (3,0)	24 (2,5)
	SV.	20	«	32	«	325 (33)	470 (48)		59 (6,0)	29 (3,0)	24 (2,5)
	«	32	«	60	«	325 (33)	450 (46)		59 (6,0)	29 (3,0)	24 (2,5)
	«	60	«	80	«	295 (30)	430 (44)		59 (6,0)	29 (3,0)	24 (2,5)
	«	80	«	100	«	295 (30)	430 (44)		59 (6,0)	29 (3,0)	24 (2,5)
16GS	To	5				325 (33)	490 (50)	21	-	-	-	-
	From	5	to	10		325 (33)	490 (50)		59 (6,0)	39 (4,0)	29 (3,0)	29 (3,0)
	«	10	«	20	incl.	315 (32)	480 (49)		59 (6,0)	29 (3,0)	24 (2,5)
	SV.	20	«	32	«	295 (30)	470 (48)		59 (6,0)	29 (3,0)	24 (2,5)
	«	32	«	60	«	285 (29)	460 (47)		59 (6,0)	29 (3,0)	24 (2,5)
	«	60	«	160	«	275 (28)	450 (46)		59 (6,0)	29 (3,0)	24 (2,5)
17GS	To	5				345 (35)	510 (52)	23	-	-	-	-
	From	5	to	10		345 (35)	510 (52)		-	44 (4,5)	-	29 (3,0)
	«	10	«	20	incl.	335 (34)	490 (50)		-	34 (3,5)	-
17G1S	To	5				355 (36)	510 (52)	23	-	-	-	-
	From	5	to	10		355 (36)			-	44 (4,5)	-	29 (3,0)
	«	10	«	20	incl.	345 (35)			-	39 (4,0)	-
14KHGS	To	5				345 (35)	490 (50)	22	-	-	-	-
	From	5	to	10						39 (4,0)	-	29 (3,0)
	10									34 (3,5)	-

Table 5

Steel grade	The thickness of sheet, mm					The bend test in cold state (the diameter of the mandrel, the thickness of the sample)
15K	From	4	to	30	incl.
	SV.	30	«	60	«
16K	From	4	«	60	«
18K	«	4	«	60	«
20K	«	4	«	30	«
	SV.	30	«	60	«
22K	From	25	«	70	«
12KH1MF	«	4	«	40	«
12KHM	From	4	to	50	incl.
	SV.	50	«	100	«
	«	100	«	160	«
17GS, 17G1S	From	4	«	20	«
09G2S	«	4	«	160	«
16GS	«	4	«	160	«
10G2S1	«	4	«	160	«
14KHGS	«	4	«	10	«

At the customer’s request tensile strength for sheets of low-alloy steel grades 09G2S, 10G2S1 and 16GS (M1) must not exceed 640 N/mm(65 kgf/mm).

(Changed edition, Rev. N 1, 3, 4).

3.8.1. For products with thickness less than 8 mm permitted a reduction of relative elongation of 1% for 1 mm reduction of thickness, for the products with thickness exceeding 20 mm — reduction of elongation by 0.25% per 1 mm increase in thickness, but not more than 2%.

For sheets of carbon steel may be increased to the upper limit of the strength 29.4 N/mm(3 kgf/mm) in comparison with the standards specified in table.4.

(Added, Rev. N 3).

3.8.2. Standards of impact strength at sub-zero temperatures are given in table.4A, it is determined by agreement between manufacturer and consumer. The norms of toughness at minus 20 °C should not be below norms at a temperature of minus 40 °C, at a temperature of minus 50 and minus 60 °C and not below norms at a temperature of minus 70 °C.

(Changed edition, Rev. N 4).

3.8.3. The leaves of all grades of steel are additionally experiencing the impact strength for the transverse specimens with stress concentrator the form of a V. the toughness of carbon and low-alloy steel grades is determined at temperatures of 20 and 0 °C, alloy — 20 °C. At customer’s request, the toughness ofcarbon and low-alloy steel grades is determined at a temperature of minus 20 °C or minus 40 °C.

The norms of toughness are given in table.5A.

Table 5A

Steel grade	The thickness of sheet, mm					Impact strength , j/cm(kgf·m/cm), not less, at temperature, °C
	+20	0	-20	-40
15K	From	5	to	60	incl.	39 (4,0)	39 (4,0)*	+	-
16K	«	5	«	60	«	39 (4,0)*	39 (4,0)*	+	-
18K	«	5	«	60	«	+	+	+	-
20K	«	5	«	60	«	39 (4,0)*	29 (3,0)*	+	-
22K	«	25	«	70	«	+	+	+	-
09G2S	«	5	«	80	«	39 (4,0)	29 (3,0)	+	+
10G2S1	«	5	«	80	«	+	+	+	+
16GS	«	5	«	80	«	39 (4,0)	34 (3,5)	+	+
17GS	«	5	«	50	«	+	34 (3,5)*	+	+
17G1S	«	5	«	50	«	+	34 (3,5)*	+	+
12KHM	«	5	«	60	«	39 (4,0)	+	-	-
	SV.	60	«	160	«	+	+	-	-
10KH2M	From	8	«	50	«	+	+	-	-
12KH1MF	«	5	«	40	«	+	+	-	-

Notes:

1. The results of the monitoring of the impact values marked with «*", optional up to 01.01.2000 and are listed in the document about quality.

2. The «+" sign means that before 01.01.2000 control is carried out for a set of statistical data and results of monitoring indicate in the document about quality.

(Changed edition, Rev. N 1, 3, 4; Amendment 1−2000 IUS).

3.8.4. When testing the mechanical properties of sheets of thickness 25 mm and more optionally control the relative narrowing of the cross section. The results of the control of the relative contractions are not a sign of rejection to 01.01.2000 and are listed in the document about quality.

(Changed edition, Rev. N 4).

3.8.5. At the request of the consumer the sheets of steel grades 16K, 16GS, 17GS, 12KHM and 10KH2M supply with rationing relative narrowing of the cross section in the thickness direction of sheet (M2). Standards are set in accordance with Annex 1.

(Changed edition, Rev. N 1, 3, 4).

3.9. The yield strength at elevated temperature must conform to table.6.

In accordance with the order for the steel grade 14KHGS determine the yield strength at one of the temperatures specified in table.6. The rules establish from 01.01.2000. Determination of values is carried out for a set of statistical data.

Table 6

Steel grade	Yield strength, N/mm(kgf/mm), at a temperature of °C, not less
	200	250	300	320	350	400	450	500
15K	176 (18)	167 (17)	137 (14)	-	118 (12)	98 (10)	78 (8)	-
16K	206 (21)	186 (19)	157 (16)	-	137 (14)	118 (12)	98 (10)	-
18K	225 (23)	206 (21)	176 (18)	-	157 (16)	137 (14)	118 (12)	-
20K	216 (22)	196 (20)	176 (18)	-	157 (16)	137 (14)	118 (12)	-
22K	216 (22)	206 (21)	191 (195)	186 (19)	176 (18)	-	-	-
16GS	245 (25)	225 (23)	196 (20)	-	176 (18)	157 (16)	137 (14)	-
			206 (21*)
17GS, 17G1S	265 (27)	245 (25)	225 (23)	-	206 (21)	176 (18)	176 (18)	-
09G2S	-	225 (23)	196 (20)	-	176 (18)	157 (16)	-	-
10G2S1	-	245 (25)	216 (22)	-	196 (20)	176 (18)	-	-
		255 (26)*	225 (23)*	-	206 (21)*		-	-
12KHM	-	225 (23)	216 (22)	-	206 (21)	196 (20)	186 (19)	-
	265 (27)*	255 (26)*	245 (25)*	-	225 (23)*	206 (21)*		162 (16,5)*
10KH2M	-	225 (23)	216 (22)	-	206 (21)	196 (20)	186 (19)	-
	225 (23)*							171,5 (17,5)*
12KH1MF	-	245 (25)	235 (24)	-	225 (23)	216 (22)	206 (21)	-
	274 (28)*	265 (27)*	255 (26)*	-	245 (25)*	225 (23)*		176 (18)*
_________________ * Apply in legal relations.

(Changed edition, Rev. N 1, 2, 3, 4).

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

(Changed edition, Rev. N 1).

3.11. On the surface of the leaves should not be cracked, captivity, roll out bubbles and impurities, bubbles-bubbles, shells, Udalov, katanoi scale.

3.12. Surface defects should be removed by gentle cutting or Stripping abrasive tool to a depth not displaying sizes of sheets for limit deviations on thickness.

3.13. On sheets with a thickness of 15 mm or more is allowed the removal of surface defects and subsequent welding of these sites.

Admissible brew defective areas for sheets with a thickness of 15 to 120 mm should be no more than 25% of the nominal sheet thickness for sheets of thickness over 120 mm — 30 mm. the total area of the brew sites should not exceed 1% of the leaf area and the area of each defective area should be no more than 25 cmexcluding collapse after removal of the defect.

The quality of the corrected areas shall be not below quality of the base metal.

(Changed edition, Rev. N 1).

3.14. On the surface of sheets allowed without Stripping some nicks, risks, scratches, fingerprints, if the depth does not display the thickness of the sheet for the limit deviation, and a thin layer of oxides that do not impede the detection of surface flaws, minor Rabina.

3.15. In coordination with the consumer leaves completely clear from scale (OP).

(Changed edition, Rev. N 4).

3.16. The leaves should be cut off. By agreement with consumer it is permitted the edge to trim.

3.17. On the leaves, rolled on continuous mills, allowed the edge to trim. The depth of the defects on the edges shall not exceed half of the limit deviations on width and output sheets for a nominal size width.

3.18. On the cut edges of the leaves should not be delamination, cracks, splits, traces of shrinkage, porosity, bubbles and blisters of rolled dirt.

Allowed individual smoothed out the bubbles, if they are located neskazanno and the length of each does not exceed 20 mm, and the depth is 2 mm.

3.19. Bundles in the leaves are not allowed.

3.20. (Deleted, Rev. N 1).

3.21. In the macrostructure of the leaves should not be visible without using the magnifying devices, bundles, clusters, rolled, bubbles, inclusions, placenow. Allowed individual smoothed out the bubbles length no more than 15 mm. In fractures permitted stratification, with a total length not exceeding 20 mm.

(Changed edition, Rev. N 4).

3.22. Continuity sheets when carrying out ultrasonic inspection must meet 1, 2, 3rd class GOST 22727.

The need for ultrasonic testing and grade continuity indicated in the order.

(Changed edition, Rev. N 3, 4).

3.23. The limits of creep and long-term strength at elevated temperatures is given in Appendix 2.

(Added, Rev. N 3).

4. ACCEPTANCE RULES

4.1. The leaves are presented to the receiving parties. The party must consist of sheets of the same brand, same thickness, one charge in the furnace or heat treated in the same conditions (in continuous furnaces, sheets of bullion — one melting ladle, and for sheets with a test of the relative narrowing of the cross section in the thickness direction of the sheet — one group quality).

The difference in the mass fraction of carbon and manganese in batches of sheets obtained from steel plants continuous casting should not exceed, respectively, of 0.04% and 0.15%.

The weight of the batch is produced by continuous casting installations, should be no more than 400 tons.

For steel plants continuous casting difference in the mass percentage of carbon and manganese is determined by ladle analysis.

(Changed edition, Rev. N 1, 3, 4).

4.1 a. Each batch is accompanied by a document of quality according to GOST 7566 with additional indication of: the number of the page (when testing each sheet of the party); the presence of fixed surface defects of welding; test results sheets for internal defects; impact toughness , relative narrowing of the cross section; the yield strength at elevated temperatures steel grade 14KHGS.

(Changed edition, Rev. N 2, 3).

4.2. The control surface is subjected to all the leaves.

In the manufacture of sheets from rolls manufacturer puts the control surface of the rolls.

(Changed edition, Rev. N 3).

4.3. For quality control sheets with thickness less than 12 mm are selected at least 10% of the leaves of the party.

Sheets with a thickness of 12 mm and more in control of one tile at a time. A checklist with the manufacturer to consider rolled from ingot or slab sheet before cutting.

At customer’s request, quality control sheets with thickness of 8−12 mm is carried out on all sheets of the party, and sheets of a thickness of 12 mm or more — 10% of leaves from the party.

In the manufacture of sheets from rolls manufacturer puts quality control at least 10% of rolls.

(Changed edition, Rev. N 3).

4.3. For sheets of steel grades 15K, 16K, 17GS, 17G1S, 18K, 20K, 16GS, 09G2S and 10G2S1 allowed the manufacturer to determine the yield stress at elevated temperatures periodically in the time frame agreed with the leading research organization in the field of mechanical engineering.

(Changed edition, Rev. N 2, 3, 4).

4.4. Sampling for chemical analysis is produced according to GOST 7565.

Control additives of titanium and residual nitrogen, arsenic, chromium, Nickel and copper carried out at the request of the consumer.

In steels produced on the basis of Kerch ores, determination of the mass fraction of arsenic is necessary.

(Changed edition, Rev. N 4).

4.5. If unsatisfactory validation results at least one of the indicators of re-examination is carried out according to GOST 7566.

5. TEST METHODS

5.1. Chemical analysis were carried out according to GOST 12344*, GOST 12345**, GOST 12346, 12347 GOST, GOST 12348, 12349 GOST, GOST 12350, 12351 GOST***, 12352 GOST, GOST 12355,12356 GOST, GOST 12359, 12361 GOST* GOST and GOST 18895 28473, 12354 series GOST and GOST 12358*, GOST 22536.0 to GOST 22536.1, 22536.2 GOST, GOST 22536.3, 22536.4 GOST, GOST 22536.5 or other methods providing the required accuracy.
________________
* On the territory of the Russian Federation the document is not valid. Standards 12344−2003;
** In the territory of the Russian Federation the document is not valid. Standards 12345−2001;
*** On the territory of the Russian Federation the document is not valid. Standards 12351−2003;
* On the territory of the Russian Federation the document is not valid. Standards 12361−2002;
* On the territory of the Russian Federation the document is not valid. Standards 12358−2002. — Note the manufacturer’s database.

(Changed edition, Rev. N 1, 2, 3, 4).

5.2. Sampling for mechanical tests and tests of bending produced in accordance with GOST 7564.

Note. At the customer’s request of mechanical properties determined on samples cut along the direction of rolling.


(Changed edition, Rev. N 1).

5.3. Mechanical properties and bending sheets of steel grades 16K and 18K, made without normalization, is checked on normalized samples.

(Changed edition, Rev. N 3).

5.4. (Deleted, Rev. N 1).

5.5. Mechanical properties and bending sheets of steel grade 22K thickness greater than 35 mm is checked on thermally treated samples.

(Added, Rev. N 2).

5.6. Mechanical properties and bending plates, which are produced without heat treatment according the customer’s request is checked on thermally treated samples.

5.7. The surface of the sheets to inspect without the use of magnifying devices and, if necessary, with pre-whitening of the surface.

Bundles are controlled by the inspection of the edges of the sheet from the manufacturer, as well as when cutting the consumer.

If necessary, the presence of defects on the edges of the check a removal of chips. Split shavings is a sign of discontinuity flaws of metal. The quality check plots brewed by ultrasonic method, magnetic particle testing, or other methods for ensuring the reliability of control.

5.6, 5.7. (Changed edition, Rev. N 1).

5.8. From each leaf sample is taken:

for tensile tests at room temperature and the yield strength at one elevated temperature — one sample;

to determine the toughness of the sample at each temperature or after a mechanical aging (depending on categories).

(Changed edition, Rev. N 3).

5.8.1. Each control sheet manufacturer selects samples:

from the head end while rolling the sheet from the ingot;

from either end — when rolling sheet from slab;

from each end — plates weighing 6 tons and more.

5.8.2. Samples from heat-treated sheets are cut after heat treatment.

If the samples are cut before heat treatment of sheets and subjected to heat treatment together with the respective sheets; wherein the samples are placed on the respective ends of the sheets.

5.8.3. In the manufacture of sheets of coils in each control coil manufacturer selects:

for tensile tests at room temperature and the yield strength at one elevated temperature for two samples: before the first sheet and from the middle of the roll;

for determination of impact strength on samples with the hub of the species U and V — for three samples corresponding to beginning, middle and end of the roll at each temperature or after a mechanical aging (depending on categories).

5.8.1−5.8.3. (Added, Rev. N 3).

5.9. For testing the bending and control of the macrostructure (fracture or etching) select one sample from one control sheet batch.

(Changed edition, Rev. N 1).

5.10. The tensile test is carried out according to GOST 1497.

The relative narrowing of the cross section of control if the mechanical properties determined on cylindrical samples.

(Changed edition, Rev. N 3).

5.11. The yield strength at elevated temperatures is determined according to GOST 9651.

5.12. Macrostructure control on the longitudinal or longitudinal fractures treated templeto according to GOST 10243 ultrasonic method or by the method agreed with the parent research organization in the field of mechanical engineering.

(Changed edition, Rev. N 1).

5.13. The definition of toughness produced on the samples with the hub of the species V and Uaccording to GOST 9454, after mechanical aging according to GOST 7268.

For sheets with a thickness of 10 mm or more toughness is determined on samples of type 1 and 11.

For sheets with thickness less than 10 mm to 5 mm, the impact strength is determined on samples of type 3 and 13.

The toughness of sheets of thickness 5 and 10 mm, laminated, standard deviation minus the tolerance, is determined on samples with a thickness equal to the thickness of the rental.

Note. When tested at a temperature of +20 °C and subzero temperatures on a single sample allowed the reduction of impact strength of 0.5 kgf·m/cm.


(Changed edition, Rev. N 1, 3, 4).

5.14. Notch toughness for carbon and low-alloy steel after mechanical aging is determined for sheets with a thickness of 7 mm or more.

For one of the samples allowed a reduction of impact strength of 0.5 kgf·m/cmcompared to established standards.

5.15. Test cold bending is carried out according to GOST 14019*.
_______________
* On the territory of the Russian Federation the document is not valid. Standards 14019−2003. — Note the manufacturer’s database.

5.16. Allowed to apply static and non-destructive methods of control of mechanical properties and other specified characteristics.

The method and the method of control is coordinated with the leading research organization in the field of mechanical engineering.

(Changed edition, Rev. N 1).

5.17. The size and the deviation from the flatness of the sheets is controlled in accordance with GOST 19903.

(Changed edition, Rev. N 4).

5.18. Ultrasonic inspection of internal defects is carried out at the customer’s request in accordance with GOST 22727.

5.19. Methods to control the relative narrowing of the cross section in the thickness direction of the sheet — according to GOST 28870.

(Changed edition, Rev. N 3, 4).

6. LABELING AND PACKAGING

6.1. Labeling, packaging and documentation — GOST 7566.

6.2. (Deleted, Rev. N 1).

6.3. When the test tile each sheet is marked with the assigned number.

ANNEX 1 (recommended). THE MAIN PROVISIONS OF THE SUPPLY OF SHEETS BY RATIONING THE RELATIVE NARROWING OF THE CROSS SECTION IN THE THICKNESS DIRECTION OF THE SHEET

ANNEX 1
Recommended

1. Sheets can be supplied by groups of relative narrowing in the thickness direction of the sheet — and .

The relative narrowing at break in the direction of the thickness shown in the table.

The quality group	Sheet thickness, mm, not more	The relative narrowing , %
		The average value of three individual samples, %	The relative importance of
		not less than
	Forty	15	10
		25	15
		35	25

2. In the leaves of groups of internal defects in the form of bundles are not allowed, unless they have a dot shape, the diameter is greater than 10 mm square and 1 mhas more than one defect.

3. For sheets of the groups the party needs to consist of sheets of one grade of steel, one of the charge in the furnace or heat treated in the same conditions (in continuous furnaces), steel ingots — one melting ladle, one quality groups and one group thickness.

Thickness of the sheets are grouped with thickness up to 20 mm and over 20 mm.

The tensile test in the thickness direction are subjected to 10% sheets quality group , 20% sheets group quality and each sheet of the party group of the quality .

4. If, when tested, the mechanical properties in the thickness direction is not attained the prescribed minimum average or individual test result is below the prescribed minimum individual values, the test is carried out on three new samples. The average value of all test results must not be below the prescribed average value and none of individual results obtained on new samples should not be below the lowest individual values.

5. Determination of the relative narrowing of the cross section in the thickness direction of the sheet, if necessary, can be conducted for plates with a thickness more than 40 mm.

ANNEX 2 (informative). THE CREEP STRENGTH AND LONG-TERM STRENGTH AT ELEVATED TEMPERATURES

ANNEX 2
Reference

Steel grade	Temperature, °C	The creep strength when the elongation 1%		Long-term strength
		10,000 hours	100000 h	10,000 hours	100000 h	200000 h
		N/mm(kgf/mm)
16K	380	194 (19,8)	132 (13,5)	233 (23,8)	157 (16,0)	139 (14,2)
	390	188 (19,2)	121 (12,3)	215 (21,9)	143 (14,6)	125 (12,8)
	400	162 (16.5 cm)	108 (11,0)	196 (20,0)	129 (13,2)	113 (11,5)
	410	146 (14,9)	96 (9,8)	178 (18,1)	116 (11,8)	101 (10,3)
	420	130 (13,3)	84 (8,6)	160 (16,3)	103 (10,5)	89 (9,1)
	430	116 (11,8)	74 (7,5)	144 (14,7)	91 (9,3)	77 (7,9)
	440	103 (10,5)	64 (6,5)	129 (13,2)	79 (8,1)	67 (6,8)
	450	91 (9,3)	54 (5,5)	115 (11,7)	69 (7,0)	58 (5,9)
	460	80 (8,2)	46 (4,7)	103 (10,5)	59 (6,0)	69 (5,0)
	470	72 (7,3)	38 (3,9)	92 (9,4)	50 (5,1)	41 (4,2)
	480	64 (6,5)	31 (3,2)	82 (8,4)	42 (4,3)	33 (3,4)
	(490)	57 (5,8)	25 (2,6)	74 (7,6)	35 (3,6)	26 (2,7)
16GS	390	197 (20,1)	137 (14,0)	277 (28,2)	194 (19,8)	174 (17.7 in)
17GS	400	175 (17,8)	102 (10,4)	248 (25,3)	172 (17,5)	152 (15,5)
	410	155 (15,8)	106 (10,9)	221 (22,5)	151 (15,4)	132 (13,5)
	420	137 (14,0)	93 (9.5)and	194 (19,8)	132 (13,5)	115 (11,7)
	430	121 (12,3)	80 (8,2)	172 (17,5)	115 (11,7)	100 (10,2)
	440	106 (10.8 V)	69 (7,0)	150 (15,3)	100 (10,2)	86 (8,8)
	450	92 (9,4)	59 (6,0)	131 (13,4)	86 (8,8)	75 (7,6)
	460	80 (8,2)	50 (5,1)	116 (11,8)	75 (7,6)	64 (6,5)
	470	70 (7,1)	43 (4,4)	102 (10,4)	64 (6,5)	54 (5,5)
	480	61 (6,2)	37 (3,8)	88 (9,0)	54 (5,5)	45 (4,6)
	(490)	53 (5,4)	31 (3,2)	78 (8,0)	46 (4,7)	38 (3,9)
12KHM	450	235 (24,0)	192 (19,6)	333 (34,0)	265 (27,0)	240 (24.5 cm)
	460	224 (22,8)	178 (18,2)	317 (32,3)	247 (25,2)	223 (22,7)
	470	212 (21,6)	163 (16,6)	298 (30,4)	228 (23,2)	205 (20,9)
	480	198 (20,2)	146 (14,9)	278 (28,4)	208 (21,2)	186 (19,0)
	490	183 (18,7)	129 (13,2)	257 (26,2)	187 (19,1)	167 (17,0)
12KHM	500	167 (17,0)	113 (11,5)	233 (24,0)	167 (17,0)	146 (14,9)
	510	145 (14,8)	94 (9,6)	208 (21,2)	140 (14,3)	120 (12,2)
	520	122 (12,4)	78 (8,0)	179 (18,3)	112 (11,4)	94 (9,6)
	530	102 (10,4)	64 (6,5)	150 (15,3)	86 (8,9)	71 (7,2)
	540	84 (8,6)	50 (5,1)	126 (12,8)	66 (6,7)	52 (5,3)
	550	69 (7,0)	38 (3,9)	103 (10,5)	49 (5,0)	37 (3,8)
	(560)	58 (5,9)	29 (3,0)	85 (8,7)	38 (3,9)	27 (2.8 m)
10KH2M	470	204 (20,8)	117 (11,9)	242 (24,7)	168 (17,1)	149 (15,2)
	480	184 (18.8 in)	106 (10.8 V)	223 (22,7)	149 (15,2)	132 (13,5)
	490	165 (16,8)	97 (9,9)	204 (20,8)	132 (13,5)	116 (11,8)
	500	147 (15,0)	87 (8,9)	186 (19,0)	118 (12,0)	102 (10,4)
	510	128 (13,1)	78 (8,0)	169 (17,3)	105 (10,7)	91 (9,3)
	520	112 (11,4)	70 (7,1)	153 (15.6-inch)	93 (9.5)and	80 (8,2)
	530	97 (9,9)	62 (6,3)	137 (14,0)	82 (8,4)	71 (7,2)
	540	83 (8,5)	54 (5,5)	124 (12,6)	73 (7,4)	62 (6,3)
	550	71 (7,2)	46 (4,7)	108 (11,0)	63 (6,4)	53 (5,4)
	560	61 (6,2)	40 (4,1)	94 (9,6)	53 (5,4)	45 (4,6)
	570	53 (5,4)	34 (3,5)	82 (8,4)	46 (4,7)	38 (3,9)
12KH1MF	500			210 (21,4)	186 (19,0)	145 (14,8)
	510			180 (18,4)	170 (17,4)	130 (13,3)
	520			170 (17,4)	157 (16,0)	115 (11,7)
	530			150 (15,3)	141 (14.4 V)	105 (10,7)
	540			135 (13,6)	126 (12,9)	95 (9,7)
	550			120 (12,3)	113 (11,5)	85 (8,7)
	560			110 (11,2)	98 (10,0)	75 (7,6)
	570			100 (10,2)	88 (9,0)	70 (7,2)
	580			90 (9,2)	78 (8,0)	60 (6,1)
	590			80 (8,2)	68 (6,9)	55 (5,6)
	600			70 (7,2)	59 (6,0)	50 (5,1)
	610			65 (6,6)	50 (5,1)	-

Notes:

1. Specified values are averages.

2. Temperature values in parentheses indicate that the corresponding steel at this temperature can not be applied in conditions of prolonged stress.


Annexes 1, 2. (Added, Rev. N 3).

APPENDIX 3 (reference).

APPENDIX 3. (Deleted, Rev. N 4).