GOST 11269-76
GOST 11269−76 rolled plates and wide universal special purpose alloyed structural high-grade steel. Specifications (with Amendments No. 1, 2, 3)
GOST 11269−76
Group B33
INTERSTATE STANDARD
ROLLED PLATES AND WIDE UNIVERSAL SPECIAL PURPOSE ALLOYED STRUCTURAL HIGH-GRADE STEEL
Specifications
Alloyed universal structural high-grade rolled steel plates and wide strips for special purposes. Specifications
OKP 09 8100
Date of introduction 1978−01−01
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
Change No. 3 adopted by the Interstate Council for standardization, Metrology and certification (Protocol No. 8, dated 12.10.95)
The adoption voted:
| The name of the state |
The name of the national authority for standardization |
| The Republic Of Belarus |
Gosstandart Of Belarus |
| The Republic Of Kazakhstan |
Gosstandart Of The Republic Of Kazakhstan |
| The Republic Of Moldova |
Moldovastandart |
| Russian Federation |
Gosstandart Of Russia |
| The Republic Of Tajikistan |
Tajikistandart |
| Turkmenistan |
The main state inspection of Turkmenistan |
| Ukraine |
Gosstandart Of Ukraine |
3. REPLACE GOST 11269−65
4. REFERENCE NORMATIVE AND TECHNICAL DOCUMENTS
| The designation of the reference document referenced |
Item number |
| GOST 8.001−80 |
5.2 |
| GOST 8.326−89 |
5.2 |
| GOST 82−70 |
2.2, 2.4 |
| GOST 162−90 |
5.2 |
| GOST 166−89 |
5.2 |
| GOST 427−75 |
5.2 |
| GOST 1497−84 |
5.7 |
| GOST 1763−68 |
5.5, 5.8 |
| GOST 2216−84 |
5.2 |
| GOST 5378−88 |
5.2 |
| GOST 5639−82 |
5.11 |
| GOST 6507−90 |
5.2 |
| GOST 7502−98 |
5.2 |
| GOST 7564−97 |
5.6 |
| GOST 7565−81 |
4.3, 5.1 |
| GOST 7566−94 |
4.5, 6.1, 6.1.3 |
| GOST 9012−59 |
5.9 |
| GOST 9454−78 |
5.7 |
| GOST 11268−76 |
3.2 |
| 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 |
| _______________ * On the territory of the Russian Federation GOST 12351−2003. — Note the manufacturer’s database. | |
| GOST 12352−81 |
5.1 |
| GOST 12353−78 |
5.1 |
| GOST 12354−81 |
5.1 |
| GOST 12355−78 |
5.1 |
| GOST 12356−81 |
5.1 |
| GOST 12365−84 |
5.1 |
| GOST 14019−80 |
5.12 |
| GOST 14192−96 |
6.1.4 |
| GOST 15846−79 |
6.1.5 |
| GOST 18895−97 |
5.1 |
| GOST 19903−74 |
2.2, 2.4, 3.5, 5.2 |
| GOST 19904−90 |
2.2, 2.4, 3.5, 5.2 |
| GOST 24597−81 |
6.1.3 |
| GOST 26877−91 |
5.2 |
| GOST 28473−90 |
5.1 |
5. Limitation of actions taken by Protocol No. 2−92 of the Interstate Council for standardization, Metrology and certification (ICS 2−93)
6. EDITION with Amendments No. 1, 2, 3, approved in October 1982, June 1987-may 1996 (ICS 1−83, 11−87, 8−96), and Amendment (ICS 4−2001)
This standard applies to plates and wide universal rolling of stainless steel for special purposes, used in heat-treated state.
(Changed edition, Rev. N 3).
1. CLASSIFICATION
1.1. The appointment of a rolled sheet are divided into subgroups:
a — for cold forming;
b — General purpose (heat treatment and pressure, cold machining, etc.).
(Changed edition, Rev. N 2, 3).
1.2. Depending on the normalized parameters of mechanical properties of rolled sheet are divided into categories 1, 2, 3, 4, 5.
(Changed edition, Rev. N 2).
2. BRAND AND ASSORTMENT
2.1. The steel grade and the thickness of the sheets and strips shall be as given in table.1A.
Table 1A
| Product |
Thickness, mm |
Steel grade |
| Rolled leaves: | 25KHGSA, 30KHGSA, 30KHGSN2A | |
| — HR | 4−60 | (30ХГСНА), 12KH2NMFA, |
| cold — rolled | 4−5 | 12KH2NVFA, 12KH2NM1FA, 12KH2NVFMA, 19KH2NMFA, |
| Hire universal broadband |
6−40 |
19KH2NVFA, 21KH2NMFA, 21KH2NVFA, 23KH2NMFA, 23KH2NVFA |
For cold forming manufactures cold-rolled and hot-rolled sheets with a thickness of 4 to 10 mm.
(Changed edition, Rev. N 3).
2.2. Shape, dimensions, limit deviations (except for extreme deviations in thickness of hot-rolled sheets of a subgroup ) and other requirements for grades must meet:
— GOST 19903 (strength rolling high and normal) for hot-rolled sheets;
— GOST 19904 (precision manufacturing high and normal) — for cold rolled sheets;
— GOST 82 (camber classes A and B) — for universal broadband rental.
2.2. (Changed edition, Rev. N 3, Amendment).
2.3. Maximum deviations in thickness hot rolled flats, intended for cold forming (subgroup ) must conform to the standards specified in table.1.
Table 1
In millimeters
| The thickness of the sheets |
Pred. off. | |||
| From | 4,0 | to | 5,5 |
±0,30 |
| SV. | 5,5 | to | 8,0 |
±0,35 |
| SV. | 8,0 | to | 10,0 | +0,5 -0,4 |
2.4. Deviation from flatness shall not exceed the standards high flatness (DF) according to GOST 19904 for cold rolled sheets and norms of normal flatness (PN) according to GOST 19903 for hot rolled sheets.
Examples of symbols
The hot rolled sheet, the normal accuracy of rolling B with a thickness of 4.5 mm, width 1000 mm, length 2000 mm according to GOST 19903, of steel grade 30HGSA, category 2, intended for cold forming (subgroup a):
Rental cold-rolled sheet, thickness 4.2 mm, width 1250 mm, length 2000 mm, normal precision manufacturing thickness (BT) and width (BS) according to GOST 19904, of steel grade 25KHGSA, category 4, General purpose (sub-group b):
Hire universal broadband random length (ND), thickness 10 mm, width 400 mm, with Rebrovo curvature class A according to GOST 82, of steel grade 12KH2NVFA, category 3.
Example of symbols which are allowed to lead in the design documentation
The hot rolled sheet, the normal accuracy of rolling B with a thickness of 4.5 mm, width 1000 mm, length 2000 mm according to GOST 19903, of steel grade 30HGSA, category 2, intended for cold forming (subgroup a):
(Changed edition, Rev. N 2, 3, Amendment).
3. TECHNICAL REQUIREMENTS
3.1. Sheets and strips are manufactured in accordance with the requirements of this standard for technological regulations approved in the prescribed manner.
(Changed edition, Rev. N 1).
3.2. Chemical composition of steel shall conform to the requirements of GOST 11268.
(Changed edition, Rev. N 2).
3.3. Sheets and strips are manufactured in the annealed (softened) state. It is possible to produce sheets in the normalized condition.
3.4. Hot rolled sheets intended for cold forming (subgroup ) shall be manufactured from etched surface.
3.5. The leaves should be cropped from all sides. Sheets laminated on the continuous rolling mills can be supplied with mill longitudinal edge.
Quality edging edging must comply with the requirements:
— GOST 19903 — for hot rolled sheets;
— GOST 19904 — for cold rolled sheets.
When the supply of sheets mill edge tears and other defects (if they are on the edges) must not exceed half of the limit deviations on width and output sheets for a nominal size width specified in the order.
(Changed edition, Rev. N 3).
3.6. Edges of plates thicker than 30 mm is permitted to cut sharp fire (before heat treatment). By agreement between the consumer and the manufacturer is allowed to produce sheet mill edge.
3.7. For trimming edges of sheets should be free of tears, peeling, traces of shrinkage porosity, cavities, gas bubbles and other defects visible to the naked eye.
3.8. Macrostructure of steel shall not have traces of shrinkage, inclusions, cracks, bubbles and placenow and must be provided by the manufacturing technology.
3.9. Depending on the normalized parameters of the mechanical properties of sheets and strip, manufacture according to the categories given in table.2.
Table 2
Normalized indicator |
Category | ||||
| 1 |
2 |
3 |
4 |
5 | |
| Mechanical properties of rolled in soft annealed or normalized condition when a tensile test |
+ |
- |
+ |
- |
+ |
| Mechanical properties determined on annealed samples (quenching + tempering) |
- |
- |
- |
+ |
+ |
| The hardness in the softened condition |
- |
+ |
+ |
+ |
+ |
Note. The «+" sign means that the indicator is normalized, the sign «— «is not normalized.
(Changed edition, Rev. N 3).
3.10. Mechanical properties of the sheets of categories 1, 3 and 5 in a softened or normalized condition and hardness of the leaves categories 2, 3, 4 and 5 should conform to the standards specified in table.3.
Table 3
| Steel grade | Tensile strength |
Elongation, %, not less |
Brinell hardness number | ||
| The diameter of the imprint, mm |
Number hardness, NV | ||||
| 25KHGSA |
490−690 (50−70) |
21 |
17 |
4,9−4,2 |
149−207 |
| 30KHGSA |
490−740 (50−75) |
20 |
16 |
4,8−4,1 |
156−217 |
| 30KHGSN2A (30ХГСНА) |
490−830 (50−85) |
19 |
15 |
4,7−4,0 |
163−229 |
| 12KH2NMFA |
490−740 (50−75) |
15 |
11 |
4,8−4,1 | 156−217 |
| 12KH2NVFA |
|||||
| 12KH2NM1FA |
|||||
| 12KH2NVFMA |
|||||
| 19KH2NMFA |
18 |
16 |
|||
| 19KH2NVFA |
|||||
| 21KH2NMFA |
15 |
11 |
|||
| 21KH2NVFA |
|||||
| 23KH2NMFA |
490−780 (50−80) |
17 |
15 |
4.6 to a 3.9 |
170−241 |
| 23KH2NVFA |
|||||
Notes:
1. For sheets and strips supplied in the normalized condition, may be increased to a strength of 49 N/mm(5 kgf/mm
) in the observance of the relative elongation.
2. Allowed a decrease in the values of elongation in comparison with specified in the table.2 for sheets and strips of a thickness more than 18 mm to 30 mm — 1 abs. % for sheets and strips of a thickness more than 30 mm — 2 abs. %.
3. Mechanical properties of steel grades 19KH2NMFA, 19KH2NVFA, 21KH2NMFA, 21KH2NVFA installed for sheets of thickness 4 mm. For plates thicker than 4 mm the mechanical properties are set by agreement between the consumer and the manufacturer.
(Changed edition, Rev. N 1, 2).
3.11. Mechanical properties (tensile strength, elongation and toughness) of the sheets 4 and 5-th category is determined on heat-treated (quenching + tempering) the samples for the modes specified in table.4.
Table 4
| Steel grade | Heat treatment |
Tensile strength |
Take |
The impact strength KCU, j/cm | |||
| Hardening |
Leave (recommended) | ||||||
| Tempe temperature, °C |
The environment is cool Denia |
Tempe temperature, °C |
Environment cooling | ||||
| not less than | |||||||
| 25KHGSA |
880 |
Oil |
470−550 |
Water or oil |
1030 (105) |
10 |
49 (5,0) |
| 30KHGSA |
480−570 |
Oil |
1080 (110) |
9 |
|||
| 30KHGSN2A (30ХГСНА) |
900 |
200−300 |
The air |
1570 (160) |
59 (6,0) | ||
| 12KH2NMFA |
910 |
490−550 |
1030 (105) |
10 |
|||
| 12KH2NVFA |
|||||||
| 12KH2NM1FA |
Oil or air |
500−550 |
980 (100) |
11 |
|||
| 12KH2NVFMA |
|||||||
| 19KH2NMFA |
925 |
Oil |
450−550 |
1130 (115) |
9 |
39 (4,0) | |
| 19KH2NVFA |
|||||||
| 21KH2NMFA |
550−570 |
||||||
| 21KH2NVFA |
|||||||
| 23KH2NMFA |
890 |
590−620 |
The air or oil |
||||
| 23KH2NVFA |
|||||||
Notes:
1. During heat treatment of the samples according to the modes specified in table.4, a deviation of quenching temperature ±15 °C.
2. Values of mechanical properties steel grade 30KHGSN2A optional until January 1, 1984
(Changed edition, Rev. N 1, 2, 3).
3.12. The surface of the plates and strips must be smooth, clean, smooth, smoothed out bubbles, rolled out of the cracks, smoothed out the dirt, cracks and stains, stress crack, sinks-vdaviv, shells from scale, wooloowin, katanoi scale, rolling and kletochnykh captured. Bundles in the leaves are not allowed.
(Changed edition, Rev. N 3).
3.13. Allowed Stripping of local defects on the surface of the leaves. The depth of Stripping shall not withdraw the sheet and the strip beyond the minimum thickness. Welding and sealing of surface defects of sheets up to 30 mm are not allowed.
On plates thicker than 30 mm, the welding, and sealing defects can be admitted by agreement between the consumer and the manufacturer.
3.14. On both sides of the surface sheets and strips of a thickness up to 10 mm allowed: rabiza, small shell-wdwy, katanya metal particles (not more than one 1 m), scratches and fingerprints, not outputting the sheet beyond the minimum thickness and color of a tint and a touch of sludge from etching.
On both sides of the surface sheets and strips of a thickness more than 10 mm are allowed: rabiza, separate sinks, scratches, fingerprints, not outputting the sheet, and a strip beyond the minimum thickness and color of a tint and a touch of sludge from etching.
Note. Allowed the requirements to the surface quality set by standards agreed upon between manufacturer and user.
3.15. Depth bezoperatsionnogo layer (for pure ferrite) for sheets and strips of steel grades 25KHGSA, 30KHGSA, 30KHGSN2A (30ХГСНА) shall not exceed:
— up to 20 mm thick is 2.5% on each side;
— 20−30 mm thick — 2% on each side.
The depth of the decarburization set from the actual thickness of sheet and strip.
3.16. At customer’s request, sheets and strips made:
a) from steel grade 25KHGSA with a mass fraction of carbon 0,24−0,29%;
b) of steel 30KHGSA with a mass fraction of carbon-0,26−0,32%;
in) of steel 30KHGSA with a mass fraction of carbon 0,30−0,34% and manganese 0,9−1,1%;
g) of steel grade 12KH2NMFA and 12KH2NVFA with a mass fraction of carbon 0,11−0,16%;
d) control of non-destructive methods according to the method of the manufacturer;
e) bend test;
g) control of austenitic grain size, which should be no larger than room 5;
h) with the etched surface of hot — rolled sheets, subgroup b;
and) deep drawing with an extreme deviation in thickness plus 0.8, and minus 0.2 mm for sheets with a thickness of 7 mm plus 1 mm for sheets of thickness 9 and 10 mm.
(Changed edition, Rev. N 3).
4. ACCEPTANCE RULES
4.1. Sheets and strip, take parties. The party must consist of sheets of one melting ladle, one thickness and one mode of heat treatment, drawn up by one document on quality.
4.1. (Deleted, Rev. N 3).
4.2. Dimensions, surface quality and condition of the edges of the check in the stream or in the acceptance of all sheets and lines of the party.
4.3. To check the chemical composition of the sample size — according to GOST 7565.
4.4. To check mechanical properties and other quality indicators taken two sheets or bands from different places of the party (for sheets or strips with a thickness up to 10 mm) and one sheet or strip (for sheets or strips of thickness greater than 10 mm).
4.5. If unsatisfactory test results of at least one of the indicators, repeat tests performed on the sample selected according to GOST 7566.
5. TEST METHODS
5.1. Sampling for the determination of chemical composition produced according to GOST 7565. Chemical composition of steel is determined according to GOST 12344*-GOST 12356, 12365 GOST, GOST GOST 18895и 28473 or other methods providing the required accuracy.
_______________
* On the territory of the Russian Federation GOST 12344−2003, here and hereafter. — Note the manufacturer’s database.
If there are differences in the chemical composition of steel is determined according to GOST 12344-GOST 12356, 12365 GOST, GOST and GOST 18895 28473.
(Changed edition, Rev. N 1, 3).
5.2. The geometric dimensions and shape of the rental is determined by means of measuring instruments according to the GOST 162, 166 GOST, GOST 427, GOST 2216, GOST 3749, 5378 GOST, GOST 6507, GOST 7502, GOST 26877, and tools or templates, certified according to GOST 8.001** or GOST 8.326*.
________________
* On the territory of the Russian Federation are PR 50.2.009−94**.
** In the territory of the Russian Federation to apply the Procedure of testing standard specimens or measurement facilities for the purposes of type approval, the Procedure for approval of type of standard samples or type of measuring instruments, the Procedure for issuing certificates on approval of type of standard samples or type of measuring instruments, establishment and changing of the validity period of these certificates and the interval between verifications of measuring instruments, Requirements to the signs of type approval for standard samples or type of measuring instruments and their application, approved by order of Minpromtorg of Russia of 30 November 2009 # 1081, here and hereafter. — Note the manufacturer’s database.
(Changed edition, Rev. N 3).
5.3. The surface quality of the sheets and strips check external examination.
5.4. Bundles and flocs is controlled by visual inspection of the edges of the sheet from the manufacturer, as well as when cutting sheets from the consumer.
5.5. For testing from each test sheet or strip is selected:
— for testing the mechanical properties of sheet metal, of categories 1, 3 and 5 — a single transverse sample, the broadband rental — one of the longitudinal sample;
for testing the mechanical properties on heat-treated samples (quenching + tempering) two longitudinal specimen for tensile tests and two longitudinal test specimen for impact strength;
— to control the depth bezoperatsionnogo layer — two samples according to GOST 1763;
— to control the absence placenow — two samples;
for flexure tests — one sample.
(Changed edition, Rev. N 3).
5.6. Sampling for mechanical tests carried out according to GOST 7564 (version 1).
5.7. Tensile tests carried out according to GOST 1497 on samples with an initial estimated length 
Of the impact test performed according to GOST 9454 on samples of types 1 and 3. Impact strength is determined on plates thicker than 5 mm.
(Changed edition, Rev. N 1, 3).
5.8. Bezoperatsionnogo the depth of the layer is controlled according to GOST 1763 by the method of M.
5.9. The hardness of sheets and strips is determined according to GOST 9012 on the heads of samples to tensile tests.
5.10. The lack placenow check by fracture of the samples after quenching in leaves and strips of a thickness more than 50 mm.
5.11. The austenitic grain size is determined according to GOST 5639.
5.12. Bending test on the angle 120° is carried out according to GOST 14019*.
_______________
* On the territory of the Russian Federation GOST 14019−2003. — Note the manufacturer’s database.
6. MARKING, PACKAGING, TRANSPORTATION AND STORAGE
6.1. Marking, packaging, transportation and storage in accordance with GOST 7566 with additions.
(Changed edition, Rev. N 2).
6.1.1. Sheets and strip, of thickness up to 10 mm should be are well-oiled on both sides with neutral oil.
6.1.2. At the request of the consumer the sheets put:
— marking each sheet has a dye;
— no oiling.
6.1.3. Rental is transported by all kinds of transport in accordance with shipping rules applicable on the transportation of each type.
When transporting in a single address two or more parcels, the dimensions of which allow it to form a transport package with dimensions according to GOST 24597 and when carload shipments of freight must be formed into transport packets in accordance with cargo carriage regulations applicable to transport of this species.
Packaging in bags packaging tape or wire in accordance with GOST 7566.
Weight package — up to 10 tons, height of the package is 500 mm.
The cargo securing in accordance with the technical conditions of loading and fastening of cargoes, approved by the Ministry of Railways.
(Changed edition, Rev. N 3).
6.1.4. Transport marking of packages perform in accordance with trebovaniyami 14192 indicating the core, additional information and signatures to be performed on the goods or labels securely attached to the load.
6.1.5. Packaging rolled when transporting it to the far North and remote areas shall be in accordance with GOST 15846*.
_______________
* On the territory of the Russian Federation GOST 15846−2002. — Note the manufacturer’s database.
6.1.6. Weight of cargo must not exceed when mechanized loading into open vehicles is 10 tons, covered — 1250 kg.
6.1.3−6.1.6. (Added, Rev. N 2).
6.2. Steel vacuum-arc remelting is indicated by the index VD by a dash at the end of the name of the steel grade.
The electronic text of the document
prepared by JSC «Code» and checked by:
the official publication of the
High quality steel: Sat. Standards. -
M.: IPK Publishing house of standards, 2002
