GOST 24982-81
GOST 24982−81 the rolled sheet of corrosion-resistant, heat-resistant and heat-resistant alloys. Specifications (with Change No. 1)
GOST 24982−81
Group B33
INTERSTATE STANDARD
THE ROLLED SHEET OF CORROSION-RESISTANT, HEAT-RESISTANT AND HEAT-RESISTANT ALLOYS
Specifications
Rolled sheet of corrosion-resistant, heatresistant and heat-proof alloys. Specifications
OKP 09 9388
Date of introduction 1993−01−01
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
3. REFERENCE NORMATIVE AND TECHNICAL DOCUMENTS
| The designation of the reference document referenced |
Item number |
| GOST 427−75 |
5.3 |
| GOST 1497−84 | 5.5 |
| GOST 1778−70 | 4.3, 5.7 |
| GOST 3118−77 | 5.12 |
| GOST 3560−73 | 6.1.4 |
| GOST 4204−77 | 5.12 |
| GOST 4461−77 | 5.12 |
| GOST 5632−72 | 3.1 |
| GOST 5639−82 | 5.8 |
| GOST 6009−74 | 6.1.4 |
| GOST 6032−89 | 4.3, 5.12 |
| GOST 6507−90 | 5.3 |
| GOST 7502−98 | 5.3 |
| GOST 7564−97 | 5.4 |
| GOST 7565−81 | 4.3, 5.1 |
| GOST 7566−94 | 4.1, 4.4, 6.1 |
| GOST 9012−59 | 5.9 |
| GOST 9454−78 | 5.6 |
| GOST 9485−74 | 5.12 |
| GOST 9651−84 | 5.5 |
| GOST 11701−84 | 5.5 |
| GOST 14019−80 | 5.10 |
| GOST 14192−96 | 6.1.2 |
| GOST 19903−74 | 2.2, 5.3 |
| GOST 19904−90 | 2.2, 5.3 |
| GOST 21650−76 | 6.1.4 |
| GOST 24597−81 | 6.1.3 |
| GOST 26877−91 |
5.3 |
4. Limitation of actions taken by Protocol No. 2−92 of the Interstate Council for standardization, Metrology and certification (ICS 2−93)
5. EDITION with Change No. 1, approved in June 1987 (IUS 10−87)
This standard applies to cold-rolled and hot-rolled flat products of corrosion-resistant, heat-resistant and high-temperature iron-Nickel alloys and Nickel-based open method of smelting brands KHN28VMAB (ЭП126), KHN32T (ЭП670), KHN38VT (ЭИ703), KHN45JU (ЭП747), KHN58V (ЭП795), KHN65MV (ЭП567), KHN65MVU (ЭП760), KHN67MVTJU (ЭП202), KHN70JU (ЭИ652), KHN75MBTJU (ЭИ602), KHN78T (ЭИ435), HN77TYUR (EI437BU); vacuum-induction smelting brand N70MFV-VI (ЭП814А-VI); vacuum arc remelting brands KHN28VMAB-VD (ЭП126-VD), KHN38VT-VD (ЭП703-VD), KHN67MVTJU-VD (ЭП202-VD) and electroslag remelting brand KHN70JU-sh (ЭИ652-W).
Indicators of technical level established by this standard are intended for the highest quality.
(Changed edition, Rev. N 1).
1. CLASSIFICATION
1.1. Flats are divided as follows:
— as material and surface quality into groups:
cold rolled, heat treated, etched — 1A, 2A, 4A;
hot rolled, heat treated, etched — 1B, 2B, 3b, 4B;
— accuracy rolling:
extra accuracy;
normal accuracy;
— type of edge:
with cut edge;
mill edge BUT.
2. ASSORTMENT
2.1. Flat products are manufactured up to a width of 1000 mm, including alloy grade KHN32T (ЭП650) — width up to 1200 mm;
thickness: from 2.0 to 11.0 mm, HR; from 0.8 to 3.9 mm cold — rolled.
By agreement between manufacturer and consumer manufactures hot-rolled sheets with a thickness less than 2.0 mm and a thickness of 11 St to 20 mm, cold-rolled — of a thickness of 0.5−0.7 mm.
2.2. Shape, dimensions and limit deviations of the dimensions of the sheets must comply with:
— for HR — GOST 19903 normal accuracy of rolling B
— for cold-rolled, GOST 19904 high and normal accuracy of rolling B.
2.3. The deviation from flatness of sheets shall not exceed that specified in table.1.
Table 1
Temporary resistance sheets |
The deviation from flatness of sheets per 1 m of length, mm | ||
| hot rolled thick |
cold-rolled | ||
| to 3.9 mm incl. |
4 mm and more | ||
| To 680 (70) incl. |
15 | 12 | 12 |
| SV. 680 (70) 830 (85) incl. | 15 | 15 | |
| SV. 830 (85) to 1030 (105) incl. |
20 | 20 | 20 |
| SV. 1030 (105) |
25 | 30 | 25 |
Note. The deviation from flatness of sheets with a thickness of 12−20 mm determined by agreement between manufacturer and consumer.
(Changed edition, Rev. N 1).
2.3.1. The deviation from flatness of cold-rolled sheets from alloys of KHN78T (ЭИ435), KHN75MBTJU (ЭИ602) and KHN38VT (ЭИ703) should not be more than 10 mm per 1 m length.
Examples of symbols
Hot-rolled sheets of alloy grade KHN65MV, group surface 3b, with cut edges, size 6х1000х2000:
Cold-rolled sheets of alloy KHN78T, group surface 2A, the normal accuracy of rolling, cut edge, size 2х710х1600:
3. TECHNICAL REQUIREMENTS
3.1. Rolled sheet manufactured in accordance with the requirements of this standard for technological regulations approved in the prescribed manner from alloys with the chemical composition according to GOST 5632.
3.2. Cold and hot rolled sheets made of heat-treated and etched.
3.3. Sheets up to 11 mm incl. made with cut edge, over 11 mm, without cut edges.
Sheets with a thickness St of 11 mm with cut edge manufactured by agreement between manufacturer and consumer.
3.4. The leaves should not be bundles, traces of shrinkage, inclusions and bubbles.
3.5. Mechanical properties at room and elevated temperatures sheets with thickness up to 3.9 mm incl. must conform to the standards specified in table.2.
Table 2
| Mechanical properties | |||||
| Grade |
The mode of heat treatment of sheets, the temperature of hardening, °C | Tempe temperature test- Tania, °C |
Tensile strength |
Yield strength |
Take |
| not less than | |||||
| KHN28VMAB (ЭП126), KHN28VMAB-VD (ЭП126-VD) | 1080−1140 | 20 | No more than 930 (95) |
- | 35 |
| 900 | 165 (17) | 30 | |||
| KHN32T, (ЭП670) |
1100−1150 | 20 | 470 (48) | 195 (20) | 25 |
| KHN38VT (ЭИ703), KHN38VT-VD (ЭИ703-VD) | 1060−1140 | Not more than 800 (82) |
- | 35 | |
| 1080−1100 | 800 | 185 (19) | 40 | ||
| KHN45JU (ЭП747) | 1060−1100 | 20 | 590 (60) | 30 | |
| KHN58V (ЭП795) | 1050−1090 | 740 (75) | 345 (35) | 35 | |
| KHN65MV (ЭП567) | 830 (85) | 390 (40) | 40 | ||
| KHN67MVTJU (ЭП202), KHN67MVTJU-VD (ЭП202-VD) |
1070−1090 Cooling in water or air, leave the samples at (850±20) °C, maintained for 5 h, air cooling |
930 (95) | - | 15 | |
| KHN70JU (ЭИ652) | 1100−1150 | 20 | Not more than 980 (100) |
30 | |
| 900 | 100 (10) | 25 | |||
| KHN70JU-SH (ЭИ652-W) | 20 | Not more than 980 (100) |
30 | ||
| 900 | 100 (10) | 40 | |||
| KHN75MBTJU (ЭИ602) | 1050−1080 | 20 | Not more than 900 (92) |
40 | |
| 800 | 245 (25) | 45 | |||
| KHN78T (ЭИ435) | 980−1020 | 20 | Not more than 860 (88) |
35 | |
| 800 | 175 (18) | 45 | |||
| HN77TYUR (EI437BU) | 1080−1120 Cooling in water, under a water shower or air. Aging (750±10) °C, maintained for 5 h, air cooling | 20 | 930 (95) | 20 | |
| 750 | 590 (60) | 8 | |||
Notes:
1. Allowed the use of other heat treatment.
2. Cooling for the alloys of all grades, with the exception of KHN67MVTJU (ЭП202), KHN67MVTJU-VD (ЭП202-VD) and HN77TYUR (EI437BU), is carried out in water, under a water shower or air.
3.6. Mechanical properties at room and elevated temperature sheets 4 mm thick and over shall conform to the standards specified in table.3.
Table 3
| Mechanical properties | |||||
| Grade | The mode of heat treatment of sheets, the temperature of hardening, °C | Tempe temperature test- Tania, °C |
Tensile strength |
Yield strength, |
Regarding elongation, |
| not less than | |||||
| KHN28VMAB-VD (ЭП126-VD) | 1080−1140 | 20 |
No more than 930 (95) |
- |
25 |
| 900 |
195 (20) | 40 | |||
| KHN32T (ЭП670) |
1080−1120 | 20 | 490 (50) | 175 (18) | 30 |
| KHN38VT (ЭИ703), KHN38VT-VD (ЭИ703-VD) |
1120−1140 |
No more 830 (85) | - | 35 | |
| 1080−1100 |
800 | 185 (19) | 40 | ||
| KHN45JU (ЭП747) |
1060−1100 |
20 | 590 (60) | 30 | |
| KHN58V (ЭП795) |
1050−1090 | 740 (75) | 390 (40) | 35 | |
| KHN65MV (ЭП567) |
1050−1090 | 850 (87) | 410 (42) | 40 | |
| KHN65MVU (ЭП760) |
830 (85) | 440 (45) | 35 | ||
| KHN67MVTJU (ЭП202), KHN67MVTJU-VD (ЭП202-VD) |
1140−1160 Air cooling, leave the samples at (850±10) °C, maintained for 5 h, air cooling |
930 (95) | 550 (56) | 18 | |
| N70MFV-VI (ЭП814А-VI) |
1050−1090 | 780 (80) | 365 (37) | 40 | |
| KHN75MBTJU (ЭИ602) | 1050−1080 | 20 |
No more than 930 (95) |
- | |
| 800 |
245 (25) | ||||
| KHN78T (ЭИ435) |
980−1020 | 20 | No more 880 (90) | 30 | |
| 800 |
175 (18) |
40 | |||
Notes:
1. Allowed the use of other heat treatment.
2. Cooling for the alloys of all grades, with the exception of KHN67MVTJU (ЭП202), KHN67MVTJU-VD (ЭП202-VD), is carried out in water, under a water shower or air.
3. For sheets of alloy KHN65MV (ЭП567) with a thickness of 12 mm or more, the annealing temperature (1100±20) °C.
3.7. The surface quality of the sheet must conform to the requirements specified in table.4.
3.8. Grain size should be within:
6−10 points — for sheets with thickness up to 3.9 mm from alloys KHN38VT (ЭИ703), KHN75MBTJU (ЭИ602) and KHN78T (ЭИ435);
5−10 points — for sheets with thickness up to 3.9 mm from alloys KHN28VMAB (ЭП126) and KHN28VMAB-VD (ЭП126-VD);
Table 4
| Group surface | The condition of the material sheet, heat treated, pickled |
Description surface | Name of permissible surface defects | The maximum depth of permissible defects |
| 1A |
Cold-rolled | Silver-Matt or shiny, no bubbles, blisters, prisoner, scale and Pererva | Rabina, scratches, fingerprints, nicks, risk, rolled fingerprints |
Depth, not outputting the sheet for the limit deviations for thickness |
| 1B |
HR |
It is the same shell | ||
| 2A | Cold-rolled | Rabina, scratches, fingerprints, nicks, risk, rolled fingerprints |
| |
| 2B | HR |
It is the same shell | ||
| 3A | Cold-rolled | Rabina, scratches, fingerprints, nicks, risk, rolled fingerprints |
The sum of limit deviations for thickness | |
| 3b | HR | It is the same shell |
||
| 4A | Cold-rolled | Silver-Matt or shiny, no bubbles, blisters, scale and Pererva | Rabina, scratches, fingerprints, nicks, risk, small slivers, rolling, rolled fingerprints |
|
| 4B | HR |
It is the same shell |
Notes:
1. In coordination with the consumer the surface quality of the sheets is allowed to set the samples approved in the established order.
2. Allowed local gentle scraping of the surface defects, the depth of Stripping shall not exceed the limits of depth of permissible defects. Burning from Stripping not allowed.
3. At the customer’s request sheets are produced without Stripping and cutting with unacceptable defects.
4. Various shades from etching and grey.
5. Allowed continuous cleaning of the sheets of abrasive with a grain size no larger than N 25 churchyard 3647.
no larger than 4 points for sheets with thickness up to 3.9 mm from alloys of KHN70JU (ЭИ652), KHN70JU-sh (ЭИ652-W), HN77TYUR (EI437BU) and KHN38VT-VD (ЭИ703-VD);
no bigger than 5 points for sheets with a thickness of 4 mm or more alloy brands KHN38VT (ЭИ703), KHN75MBTJU (ЭИ602) and KHN78T (ЭИ435).
3.9. Sheets with a thickness up to 3.9 mm alloy brand KHN32T (ЭП670) must pass the test for cold bend at an angle of 180° to the contact without the formation of cracks, tears and bundles.
3.10. Sheets of alloys of XH65MB (ЭП567), KHN65MVU (ЭП760), N70MFV-VI (ЭП814А-VI), at the request of the consumer and alloy XH78T (ЭИ435) should not have the tendency to intergranular corrosion. In this case, the grain size for alloy grade KHN78T (ЭИ435) is not normalized.
3.11. For the alloy grades KHN67MVTJU (ЭП202, ЭП202-VD) for control and heat treated samples relative reduction shall be not less than 18% and impact strength of at least 40 j/cm(4 kg·m/cm
).
3.12. Alloy brand N70MFV-VI (ЭП814А-VI) produce a hardness of 220 HB.
3.13. At the customer’s request sheets are produced:
— with standard shock bending;
— with standard pollution alloys, non-metallic inclusions in the sheet thickness of 6 mm and more;
— with standard hardness;
— no mechanical testing and testing for intergranular corrosion.
Norms set by agreement between manufacturer and consumer.
4. ACCEPTANCE RULES
4.1. The leaves take parties. The party must consist of sheets of one melting, one state of the material, one thickness, one mode of heat treatment and be accompanied by one document on quality according to GOST 7566 with an additional indication of the chemical composition in accordance with the document on the quality of the manufacturer of the alloy.
Vacuum arc and electroslag melting complement of ingots, melted in the mold section, identical in electric mode and one of the electrodes of the source of melting.
4.2. To control the size, flatness and surface quality are subjected to each sheet of the party.
4.3. To check the quality of the leaves taken:
for tensile tests at room and elevated temperature, determining the impact bending, cold bending, grain size, hardness of paper from the party;
— to determine the propensity to intergranular corrosion — the sample size according to GOST 6032*;
______________
* On the territory of the Russian Federation GOST 6032−2003, here and hereafter. — Note the manufacturer’s database.
— to determine the contamination of non — metallic inclusions according to GOST 1778;
— for checking of chemical composition — GOST 7565.
4.4. 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. Sampling for the determination of chemical composition is carried out according to GOST 7565.
The chemical composition of the alloys is determined by the method of the manufacturer, duly approved.
5.2. The surface quality is checked visually without the use of magnifying devices.
5.3. Measurement of tile dimensions and flatness is carried out according to GOST 19903,19904 GOST and GOST 26877. The thickness of the sheets is measured with a micrometer according to GOST 6507, the linear dimensions of leaves, measuring tape according to GOST 7502, metal ruler according to GOST 427 or other measuring tools that provide required accuracy of measurement. The deviation from flatness is measured with a metal ruler according to GOST 427 or other measuring instruments of appropriate accuracy.
(Changed edition, Rev. N 1).
5.4. Selection and preparation of samples for mechanical testing is carried out according to GOST 7564 across the direction of rolling.
From each sheet selected in the sample taken at two specimen of each type.
For grades KHN67MVTJU (ЭП202) and HN77TYUR (EI437BU) determination of mechanical properties carried out on heat treated samples.
5.5. The tensile test at a temperature of (20) °With the sheets of thickness 3.0 mm and more is carried out according to GOST 1497, and sheets with thickness up to 3.0 mm according to GOST 11701 samples, the initial estimated length
Allowed the test of sheets up to 3.0 mm carried out on samples of the estimated length of 5.65 and width
= 20 mm. tensile Test at elevated temperature is carried out according to GOST 9651 on samples of initial length
For sheets with a thickness of 6 mm or more is allowed to carry out tests on round specimens.
5.6. Impact strength is determined according to GOST 9454. Sample type is determined by agreement between manufacturer and consumer.
5.7. Contamination of metal non-metallic inclusions test according to GOST 1778.
5.8. The grain size is determined according to GOST 5639.
5.9. Brinell hardness number is determined according to GOST 9012.
5.10. Test cold bend — according to GOST 14019*.
_______________
* On the territory of the Russian Federation GOST 14019−2003. — Note the manufacturer’s database.
5.11. Control of the defects specified in paragraph 3.4, is carried out visually on the edges of the sheets.
5.12. Testing of alloys to intergranular corrosion is carried out on the samples after provoking heating at a temperature of (800±10) °C for 30 min, cooling in air.
The mode of testing alloys shall meet the requirements specified in table.5.
Table 5
| Grade |
The composition of the solution | The test duration at the boiling point of the solution, h |
| KHN65MV (ЭП567) KHN65MVU (ЭП760) |
263 cm |
48 |
| Iron sulfate should be added directly to the flask with samples | ||
| N70MFV-VI (ЭП814А-VI) |
1200 cm |
200 |
| KHN78T (ЭИ435) | 335 cm |
96 |
The production of samples, preparation for testing, testing and evaluation of the propensity to intergranular corrosion according to GOST 6032.
6. PACKING, MARKING, TRANSPORTATION AND STORAGE
6.1. Packing, marking, transportation and storage is carried out according to GOST 7566 with the following additions.
6.1.1. Leaves in bundles, the marking is applied on each sheet.
6.1.2. Transport marking is applied according to GOST 14192 with main, additional and informational inscriptions performed by waterproof paint on the label, securely attached to the cargo.
6.1.3. Consolidation packages produced according to GOST 24597.
6.1.4. Bundles or packages must be bound with a wrapping tape according to GOST 3560, GOST 6009 or other normative and technical documentation, and funds of the bond should correspond to GOST 21650.
6.1.5. Weight of cargo space with mechanized loading and unloading in open vehicles must not exceed 10 t, in indoor — 1250 kg With manual loading and unloading weight of cargo must not exceed 80 kg.
6.1.6. The sheets are transported by all kinds of transport in accordance with cargo carriage regulations applicable to transport of this type, and conditions of loading and fastening of cargoes, approved by the Ministry of Railways.
Sec. 6. (Changed edition, Rev. N 1).
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
