TU 14-1-1747-76
Federal Agency for Industry CentralResearch Instituteferrous metallurgy them. I.P. BardeenFederal State Unitary Enterprise (FSUE TsNIIchermet named after I.P. Bardin) certification of metal products 107905, Moscow, 2nd Baumanskaya, 9/23 Tel./fax 777−93−91 For telegrams: Moscow, TsNIIchermet TTY: Niobium 113306 No. TsS / TU-1747 dated 18.08.2005. |
Ex. No. 37 Chief engineer of JSC Technical Director of JSC Deputy General Director of FSUE First deputy. chief of technical Management of ChMK OJSC G.A. Bratko Chief engineer of JSC «Moskovsky met. Hammer and Sickle plant |
PRELIMINARY NOTICE
on changes in TU 14−1-1747−76
«Cold-rolled sheet steel from heat-resistant steels and alloys»
1. Clause 2.1 and Table 1, Clause 2.4 Table 3 and Clause 2.5. Replace the brand designation: «KhN50VMKTUR-ID (EP99-ID)» with «KhN50MVKTUR-ID (EP99-ID).
2. Clause 4.1. subparagraph 2. Replace the designation «XN50VMKTUR-ID (EP99-ID)» with «XN50MVKTUR-ID (EP99-ID).
Reason: Correction of a typo. Letter of JSC Metallurgical Plant «Elektrostal» No. 298−30 / В dated 15.05.2005
Director of the Center for Standardization and
certification of metal products by V.T. Ababkov
Introduced in amendment No. _______
| OKP 09 9300 | Group B33 Ex. No. APPROVED: TC375 Chairman V.T. Ababkov «28» .01.2005 |
ROLLED THIN SHEETS, COLD-ROLLED
FROM HEAT-RESISTANT STEELS AND ALLOYS
TECHNICAL CONDITIONS
TU 14−1-1747−76
(Reissued in 2000, subject to changes No. 1−12)
Change No. 17
The holder of the original is TsSSM FSUE TsNIIchermet im. I.P. Bardeen
Date of introduction: 01.05.2005
AGREED: Deputy General Director of FSUE dated First deputy. Chief of Technical Iron and Steel Works" from 21.12.20040 G.A. Bratko |
DEVELOPED: Deputy Director of the Center V.D. Khromov «27» .01.2005 2 p. Central Scientific Research institute |
C.2
Change No. 17
TU 14−1-1747−76
1. Clause 2.1 shall be supplemented with a phrase as amended: «In the alloy of grade KhN77TYuR (EI 437B), the mass fraction of antimony, tin and arsenic should be no more than 0.001% of each, bismuth — no more than 0.0001%.
2. Clause 2.1 Table 1. Delete Note 5.
3. Clause 3.1 shall be supplemented with sub-clause 4 in the wording «4. Determination of the mass fraction of antimony, tin, arsenic and bismuth in the alloy of grade KhN77TYuR (EI 437B) is carried out according to the manufacturer’s method. «
Expertise carried out by the Center
FSUE TsNIIchermet them. I.P. Bardeen
«27» .01.2005
Deputy Director of the Center for Standardization and
certification of metal products
V.D. Khromov
| OKP 09 9300 | Group B33 Ex. No. APPROVED: TC375 Chairman V.T. Ababkov «01» .12.2004 |
ROLLED THIN SHEETS, COLD-ROLLED
FROM HEAT-RESISTANT STEELS AND ALLOYS
TECHNICAL CONDITIONS
TU 14−1-1747−76
(Reissued in 2000, subject to changes No. 1−12)
Change No. 16
The holder of the original is TsSSM FSUE TsNIIchermet im. I.P. Bardeen
Introduction date: 01.12.2004
AGREED:Technical Director dated July 16, 2004 Chief engineer of the plant No. 620/2738 V.I. Semenov from 15.07.04 Deputy general director No.D-6844 B.S. Lomberg from 29.09.2004 |
DEVELOPED:Deputy Director of TsSSM FSUE TsNIIchermet named after I.P. Bardeen V.D. Khromov «29» .11.2004 2 p. Central Scientific Research institute |
C.2
Change No. 16
TU 14−1-1747−76
1. Preamble, clauses 1.2., 2.1 table 1, 2.2 table 2, 2.4 table 3, 2.5 and Appendix 2 «Form 3.1A». After alloy grade ХН78Т (ЭИ435), add the brand: ХН78Т-ВД (ЭИ435-ВД).
2. An example of a symbol should be stated in the edition:
- «An example of a symbol.
- Normal sheet of manufacturing accuracy (BT), dimensions 2.0х700х3000 mm, made of alloy grade ХН38ВТ (ЭИ703)
- Sheet BT-2,0х700х3000-ХН38ВТ TU 14−1-1747−76 «.
3. Clause 1.1. The third paragraph shall be stated in the wording: «Limit deviations in dimensions must comply with the requirements of GOST 19904 for increased (AT) and normal (BT) manufacturing accuracy. The accuracy of manufacturing is indicated in the order. «
4. Section 4 clause 4.1. Replace the numbering of subparagraphs:
- «1; 2; 3; 4; five; 6 «to» 4.1.1; 4.1.2; 4.1.3; 4.1.4; 4.1.5; 4.1.6 «.
5. Subclause
6. Clause 4.2. Replace the brand designation: «KhN50MVKTUR (EP99-ID)» with «KhN50MVKTUR-ID (EP99-ID)».
7. Change No. 15. Postpone the introduction of the amendment from «01.10.2004» as of 01.01.2005
8. Preliminary Notice No. ЦС / ТУ 1747 dated
Expertise carried out by the Center
FSUE TsNIIchermet them. I.P. Bardeen
«29» .11.2004
Deputy Director of the Center for Standardization and
certification of metal products
V.D. Khromov
| OKP 09 9300 | Group B33 Ex. No. APPROVED: TC375 Chairman V.T. Ababkov «12» .07.2004 |
ROLLED THIN SHEETS, COLD-ROLLED
FROM HEAT-RESISTANT STEELS AND ALLOYS
TECHNICAL CONDITIONS
TU 14−1-1747−76
(Reissued in 2000, subject to changes No. 1−12)
Change No. 15
The holder of the original is TsSSM FSUE TsNIIchermet im. I.P. Bardeen
Introduction date: 01.10.2004
AGREED:Chief Engineer V.N. Popov No. 319-TU / 13 from 04.06.2004 08.07.2004 |
DEVELOPED:Deputy Director of TsSSM FSUE TsNIIchermet named after I.P. Bardeen V.D. Khromov «09» .07.2004 Central Scientific Research institute P. 3 |
C.2
Change No. 15
TU 14−1-1747−76
1. Clause 2.1. Table 1 shall be supplemented with note 5 as amended:
- «five. In the alloy grade KhN77TYuR (EI 437B), the presence of antimony, tin, bismuth, arsenic is allowed no more than 1 point on the spectral analysis scale. «
2. Appendix 2 «Form 3.1.A» shall be replaced by the attached one.
Expertise carried out by the Center
FSUE TsNIIchermet them. I.P. Bardeen
«09» .07.2004
Deputy Director of the Center for Standardization and
certification of metal products
V.D. Khromov
C.3
Change No. 15
TU 14−1-1747−76
Appendix 2
(required)
Form 3.1A
| Name of the type of product according to ND | Product type code according to OKP (OK 005−93) | OKS code | Group | |
| Cold-rolled thin-sheet steel from heat-resistant steels and alloys | 09 9300 | 77.140.50 | T 33 | |
| Steel (alloy) grade | Steel (alloy) grade codes | |||
| 10Х11Н20Т2Р (ЭИ696А) | 8537 | |||
| KhN78T (EI435) | 8865 | |||
| KhN78TYUR (EI437B) | 8863 | |||
| KhN75MBTYu (EI602) | 8859 | |||
| KhN38VT (EI703), KhN38VT-VD (EI703-VD) | 8812 | |||
| KhN38VB (EI703B), KhN38VB-VD (EI703B-VD) | 8811 | |||
| 12Х25Н16Г7АР (ЭИ835) | 8528 | |||
| KhN60VT (EI868), KhN60VT-VD (EI868-VD), KhN60VT-Sh (EI868-Sh) | 8831 | |||
| KhN50MVKTUR-ID (EP99-ND) | 8821 | |||
| KhN28VMAB (EP126), KhN28VMAB-VD (EP126-VD) | 8801 | |||
| OKP 09 9300 | Group B33 Ex. No. APPROVED: them. I.P. Bardeen, TC375 Chairman V.T. Ababkov «05». 03.2004 |
ROLLED THIN SHEETS, COLD-ROLLED
FROM HEAT-RESISTANT STEELS AND ALLOYS
TECHNICAL CONDITIONS
TU 14−1-1747−76
(Reissued in 2000 with amendments No. 1−12,
p / n from 21.09.76, 02.07.77, 04.10.77, 11.11.77, 29.11.77, p / and from 10.06.91)
Change No. 14
Original holder TsSSM FSUE TsNIIchermet
them. I.P. Bardeen
Introduction period: 01.05.2004
AGREED:Deputy general director B.S. Lomberg 03.03.2004 |
DEVELOPED:Chief Engineer P. 2 Central Scientific Research institute |
C.2
Change No. 14
TU 14−1-1747−76
1. Preamble, paragraphs 1.2, 2.1. table 1, 2.2 table 2, 2.4 table 3, 2.5 (2 times) supplement with alloy grade «ХН60ВТ-ВД (ЭИ 868-ВД), ХН60ВТ-Ш (ЭИ868-Ш)» after alloy grade ХН60ВТ (ЭИ 868).
2. Clause 4.1 sub-clause 2. First sentence. After alloy grade «ХН38ВБ (ЭИ 703Б)» add the brand: «ХН60ВТ (ЭИ 868)».
Supplement with the proposal as amended:- «Sheets made of alloy grade KhN60VT (EI 868), smelted using electroslag remelting, are additionally marked with the index» Ш «through a dash to the grade.»
Expertise carried out by the Center
FSUE TsNIIchermet them. I.P. Bardeen
«04» .03.2004
Deputy Director of the Center for Standardization and
certification of metal products
V.D. Khromov
OKP 09 9300 ACCOUNTED |
Group B33 Ex. No. APPROVED: TC375 Chairman V.T. Ababkov «22» .05.2001 |
ROLLED THIN SHEETS, COLD-ROLLED
FROM HEAT-RESISTANT STEELS AND ALLOYS
TECHNICAL CONDITIONS
TU 14−1-1747−76 (Instead of ChMTU 14−1-456−68)
(Reissued in 2000 with amendments No. 1−12,
p / n from 21.09.76, 02.07.77, 04.10.77, 11.11.77, 29.11.77, p / and from 10.06.91)
Change No. 13
Original holder TsSSM FSUE TsNIIchermet
Introduction date: 26.06.2001
AGREED:Chelyabinsk Iron and Steel Works» No. 35 / 2−14−1747 dated 04.19.2001. Head of technical department G.A. Bratko 17.05.01 |
DEVELOPED:Deputy Director of the Center V.D. Khromov «21» .05.2001 Central Scientific Research institute |
C.2
Change No. 13
TU 14−1-1747−76
1. Clause 1.1. Delete the designation in brackets: «(BT)».
2. Clause 1.2. After the third paragraph, add a paragraph as amended:
- «18 mm — for sheets of alloy grade KhN77TYuR (EI437B)»;
- Last paragraph. Exclude alloy grade KhN77TYuR (EI437B).
3. Clause 2.1. State the last paragraph in a new edition:
- «In finished rolled products, chemical composition deviations from the norms of Table 1 are allowed in accordance with GOST 5632.»
- Table 1. Note 1. After the word «calcium» add the word «magnesium».
4. Clause 2.4. Table 3. Replace the word «Notes» with «Note».
Note 1. Delete the number: «1».Note 2 to be deleted.
5. Clause 4.1. Subparagraphs 1 and 2 shall be stated in the wording:
- «1. Each sheet must be stamped or applied with an electric pencil or indelible paint with a stamp indicating:
steel or alloy grades (or their symbol);
heat numbers (or their conditional numbers);
OTK hallmarks. - 2. Sheets of alloys of grades KhN28VMAB (EP126), KhN38VT (EI703), KhN38VB (EI703B), melted by vacuum arc remelting, are additionally marked with the index «VD» through a dash to the grade. Sheets of alloy grade XN50VMKTYUR (EP99), melted in a vacuum induction furnace by subsequent vacuum arc remelting, are additionally marked with the index «ID» through a dash to the grade.
Subparagraph 6. Before the word «decipher» add the word: «also».
The examination was carried out by TsSSM FSUE TsNIIchermet
«21» .05.2001
Deputy Director of the Center for Social and Media Studies V.D. Khromov
Ministry of ferrous metallurgy of the USSR
OKP 09 9300 ACCOUNTED State Committee for Standards Registered and entered in the register Agreed: Technical Office / Stroganov G.B. / |
Group B33 Ex. No. Approved by: MCHM USSR 26 / 01.76 g. |
ROLLED THIN SHEETS, COLD-ROLLED
FROM HEAT-RESISTANT STEELS AND ALLOYS
TECHNICAL CONDITIONS
TU 14−1-1747−76 (Instead of ChMTU 14−1-456−68)
(Reissued in 2000 with amendments No. 1−12,
p / n from 21.09.76, 02.07.77, 04.10.77, 11.11.77, 29.11.77, p / and from 10.06.91)
Original holder TsSSM FSUE TsNIIchermet
From the rock introduction: 06/26/2001 Agreed: Chief engineer of the plant Chief engineer of the plant Head laboratory |
For a period: Unlimited Designed by: Deputy Head of VIAM Register. doc. in VIFS |
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TU 14−1-1747−76
These technical conditions apply to cold-rolled thin-sheet steel (hereinafter referred to as sheets) of their heat-resistant steels and alloys of grades 10Kh11N20TR (EI696A), KhN78T (EI435), KhN77TYuR (EI437B), KhN75MBTYu (EI602), KhN38VT-EIVT3 VD), KhN38VB (EI703B), KhN38VB-VD (EI703B-VD), 12H25N16G7AR (EI835), KhN60VT (EI868), KhN50MVKTUR-ID (EP99-ID), VD28VMAB (KhN28VMAB), VD28VMAB (KhN28VMAB)
Sheets from alloys of grades KhN38VB (EI703B) and KhN38VB-VD (EI703B-VD) are manufactured at the request of the consumer.
An example of a symbol.
Sheet with dimensions 2х700х3000 mm made of alloy grade ХН38ВТ (ЭИ703):
Sheet 2х700х3000-ХН38ВТ TU 14−1-1747−76.
1. VARIETY
1.1. Sheets are supplied with a thickness of 0.8 to 3.9 mm inclusive.
The dimensions of the sheets must correspond to those specified in GOST 19904 and the specialization of the supplying plant.
Limit deviations in size must comply with the requirements of GOST 19904 for normal manufacturing accuracy (BT).
Sheet sizes are specified in the order.
Note. Sheets with dimensions not provided for by GOST 19904 are supplied by agreement of the parties.
1.2. The deviation from flatness for 1 m of length should not exceed:
10 mm for sheets of steel and alloys of grades 10Kh11N20T2R (EI696A), KhN78T (EI435), KhN75MBTYu (EI602), KhN38VT (EI703), KhN38VT-VD (EI703-VD), KhN38VB (EI703B-VD), KhN38VB (EI703B), VDN38);
15 mm for sheets made of steel grade 12X25N16G7AR (EI838) and alloy grade XN60VT (EI868);
20 mm for sheets of alloys of grades KhN77TYuR (EI437B), KhN50MVKTYUR-ID (EP99-ID), KhN28VMAB (EP126), KhN28VMAB-VD (EP126-VD).
Note. At the request of the consumer, sheets are supplied with a smaller deviation from flatness. In this case, the norms are established by agreement of the parties.
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TU 14−1-1747−76
2. TECHNICAL REQUIREMENTS
2.1. The chemical composition of steel and alloys according to fusion analysis must comply with the requirements of Table 1.
The chemical composition of grades KhN77TYuR (EI437B), KhN38VT (EI703), KhN38VT-VD (EI703-VD), KhN38VB (EI703B), KhN38VB-VD (EI703YU-VD) must comply with the requirements of GOST 5632. At the same time, in the alloy of grades EI703VB) and KhN38VB-VD (EI703B-VD), the mass fraction of residual molybdenum is not more than 0.8%.
In finished rolled products of alloy grade KhN50VMKTUR-ID (EP99-ID), silicon deviation is allowed — plus 0.05%.
2.2. Sheets are delivered in a heat-treated state, straightened, with cut edges and an etched surface.
The recommended mode of heat treatment of sheets is indicated in Table 2.
table 2
| Steel or alloy grade | Recommended heat treatment mode | |
| Quenching temperature, ° С | Cooling | |
| 10Х11Н20Т2Р (ЭИ696А) | 1020−1060 | In water, water shower or air |
| 12Х25Н16Г7АР (ЭИ835) | 1080−1150 | |
| KhN38VT (EI703), KhN38VT-VD (EI703-VD), KhN38VB (EI703B), KhN38VB-VD (EI703B-VD) | 1120−1140 | |
| KhN27VMAB (EP126), KhN28VMAB-VD (EP126-VD) | 1080−1140 | |
| KhN60VT (EI868) | 1150−1200 | |
| KhN78T (EI435) | 980−1020 | |
| KhN75MBTYu (EI602) | 1050−1080 | |
| KhN77TYUR (EI437B) | 1080−1120 | |
| KhN50MVKTUR-ID (EI99-ID) | 1080−1120 | |
| Note. The holding time upon reaching the hardening temperature is set at the rate of 0.8−2.0 min per 1 mm of sheet thickness. | ||
3
TU 14−1-1747−76
Table 1
| Steel or alloy grade | Mass fraction of elements,% | ||||||||||||||
| Carbon | Silicon | Manganese | Chromium | Nickel | Titanium | Aluminum | Tungsten | Molybdenum | Niobium | Iron | Sulfur | Phosphorus | Other elements | ||
| no more | no more | ||||||||||||||
| 10Х11Н20Т2Р (ЭИ696А) | 0.10 | 1.0 | n.b. 1.0 | 10.0−12.5 | 18.0−21.0 | 2.3−2.8 | n.b. 0.50 | - | - | - | Main | 0.02 | 0.03 | Copper n.b. 0.2 Bor n.b. 0.008 | |
| 12Х25Н16Г7АР (ЭИ835) | 0.12 | 1.0 | 5.0−7 | 23.0−26.0 | 15.0−18.0 | - | - | - | - | - | Main | 0.02 | 0.035 | Bor n.b. 0.01 Nitrogen 0.3−0.45 Copper nb 0.2 | |
| KhN28VMAB (EP126) | 0.1 | 0.6 | n.b. 1.5 | 19.0−22.0 | 25.0−30.0 | - | - | 4.8−6.0 | 2.8−3.5 | 0.7−1.3 | Main | 0.02 | 0.02 | Vanadium n.b. 0.2 Bor n.b. 0.005 Nitrogen 0.15−0.30 Copper n.b. 0.2 | |
| KhN28VMAB-VD (EP126-VD) | 0.1 | 0.6 | n.b. 1.5 | 19.0−22.0 | 25.0−30.0 | - | - | 4.8−6.0 | 2.8−3.5 | 0.7−1.3 | Main | 0.015 | 0.02 | Vanadium n.b. 0.2 Bor n.b. 0.005 Azone n.b. 0.3 Copper n.b. 0.2 | |
| KhN60VT (EI868) | 0.1 | 0.8 | n.b. 0.50 | 23.5−26.5 | Main | 0.3−0.7 | n.b. 0.5 | 13.0−16.0 | - | - | 4.0 | 0.013 | 0.013 | Calcium n.b. 0.05 Copper n.b. 0.07 Molybdenum n.b. 1.5 | |
| KhN78T (EI435) | 0.12 | 0.8 | n.b. 0.7 | 19.0−22.0 | Main | 0.15−0.35 | n.b. 0.15 | - | - | - | 1.0 | 0.01 | 0.015 | Copper n.b. 0.07 | |
| KhN75MBTYu (EI602) | 0.1 | 0.8 | n.b. 0,4 | 19.0−22.0 | Main | 0.35−0.75 | 0.35−0.75 | - | 1.8−2.3 | 0.9−1.3 | 3.0 | 0.012 | 0.020 | Copper n.b. 0.7 | |
| KhN60VMKTUR-ID (EP99-ID) | 0.10 | 0.3 | n.b. 0.3 | 17.5−19.5 | Main | 1.0−1.5 | 2.5−3.0 | 5.5−7.0 | 3.5−5.0 | n.b. 1.5 | 3.0 | 0.015 | 0.015 | Copper n.b. 0.04 Bor n.b. 0.005 Cerium n.b. 0.02 Cobal 5.0−8.0 | |
Notes. 1. Boron, cerium, calcium are introduced into the metal by calculation and are not determined by chemical analysis.2. By agreement of the parties, sheets of steel grade 10X11H20T2R (EI696A) are supplied with a mass fraction of boron in steel 0.0003−0.005% calculated. 3. In accordance with the order, sheets of steel grade 10X11H20T2R (EI696A) can be supplied with a titanium mass fraction of 2.3−2.7%. In this case, the steel is marked with 10Х11Н20Т2Р (ЭИ696Б). 4. In the alloy of grade KhN50MVKTUR-ID (EP99-ID), a deviation in silicon is allowed — plus 0.05%. | |||||||||||||||
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TU 14−1-1747−76
2.3. At the request of the consumer, sheets can be supplied in semi-hardened and cold-worked condition. In this case, technical requirements are established by agreement of the parties.
2.4. The mechanical properties of sheets in the state of delivery and on control samples, heat-treated according to a special mode, must correspond to those indicated in Table 3.
2.5. Sheets as delivered are controlled for grain size. The grain size must be within the numbers:
| 6−10 | for sheets of steel and alloys grades: | 10Х11Н20Т2р (ЭИ696А) 12Х25Н16Г7АР (ЭИ835) KhN38VT (EI703) KhN38VT-VD (EI703-VD) KhN78T (EI435) |
| 4−9 | for grade alloy sheets | KhN77TYUR (EI437B) |
| 5−9 | for grade alloy sheets | KhN60VT (EI868) |
| 5−10 | for sheets of grade alloys | KhN28VMAB (EP126) KhN68VMAB-VD (EP126-VD) |
| 3−8 | for grade alloy sheets | KhN50VMKTUR-ID (EP99-ID) |
In the case of obtaining a grain size in a sheet of alloy grade XN60VT (EI868) smaller than number 9, repeated heat treatment is allowed. In this case, the grain number can be no larger than 4 numbers.
2.6. The surface of the sheets must be flat and smooth. Captures, scale, bubbles, delamination and traces of overflow on the surface of the sheets are not allowed.
On the front side of the sheet, individual small scratches, imprints of roll pressure, nicks, small ripples are allowed.
On the reverse side of the sheets, in addition to the listed defects, the following are allowed: general slight ripple, scratches and nudges from rolls.
The depth of occurrence of the listed defects should not exceed half the sum of the maximum deviations in the thickness of the sheet and bring the sheet beyond the minimum thickness.
It is allowed to clean defects with fine-grained emery to a depth that does not take the sheet beyond the minimum thickness.
Etched sheets can have different shades.
6
TU 14−1-1747−76
Table 3
| Steel or alloy grade | Heat treatment of samples | Test temperature ° С | Mechanical properties | |
Temporary resistance, σ in, N / mm 2 (kgf / mm 2) |
Elongation, not less, δ 5 ,%, at | |||
| 10Х11Н20Т2Р (ЭИ696А) | In delivery condition | 20 | not more than 740 (75) | 35 |
Aging at a temperature of (720 ± 10) °, Exposure 8 hours ± 10 min, |
20 700 |
not less than 980 (100) not less than 590 (60) |
20 ten | |
| 12Х25Н16Г7АР (ЭИ835) | In delivery condition | 20 900 |
not more than 980 (100) not less than 180 (18) |
35 thirty |
KhN38VT (EI703) KhN38VT-VD (EI703-VD) |
In delivery condition | 20 800 |
not more than 830 (85) not less than 190 (19) |
35 40 |
| KhN28VMAB (EP126) KhN68VMAB-VD (EP126-VD) |
In delivery condition | 20 900 |
not more than 930 (95) not less than 170 (17) |
35 thirty |
| KhN60VT (EI868) | In delivery condition | 20 900 |
not more than 1030 (105) not less than 180 (18) |
40 thirty |
| KhN78T (EI435) | In delivery condition | 20 800 |
not more than 860 (88) not less than 180 (18) |
35 45 |
| KhN75MBTYu (EI602) | In delivery condition | 20 800 |
not more than 900 (92) not less than 250 (25) |
40 fifteen |
| KhN77TYUR (EI437B) | Aging at a temperature of (750 ± 10) °, exposure 5 hours ± 10 min, |
20 750 |
not less than 880 (90) not less than 590 (60) |
13 eight |
7
TU 14−1-1747−76
Table 3
continuation
| Steel or alloy grade | Heat treatment of samples | Test temperature ° С | Mechanical properties | |
Temporary resistance, σ in, N / mm 2 (kgf / mm 2) |
Elongation, not less, δ 5 ,%, at | |||
| KhN50VMKTUR-ID (EP99-I)) | In delivery condition | 20 | not more than 1180 (120) | 35 |
Quenching at a temperature of (1090 ± 10) °, exposure 20 min, air cooling |
900 | not less 490 (50) | nine | |
Notes. 1. In case of obtaining unsatisfactory test results of sheets made of steel grade 10X11N20T2R (EI696A) after aging of the control samples, it is allowed to carry out house tests after heat treatment of the samples according to the following regime: aging at a temperature of (720 ± 10) ° С, exposure 8−12 hours + aging at temperature (650 ± 10) ° С for 4−8 hours, while the mechanical properties must comply with the standards of table 3.2. At the request of the consumer, for sheets of alloy grades ХХ28ВМАБ (ЭП126), ХН28ВМАБ-ВД (ЭП126-ВД) 3.0 mm thick, additionally determine the yield point σ 0.2 at a temperature of 600 ° C, the value of which must be at least 294 N / mm 2 (30 kgf / mm 2). The test results are not a sign of rejection, but must be recorded in the quality document. | ||||
eight
TU 14−1-1747−76
On the surface of sheets made of steel grade 12X25N16G7AR (EI835), light points are allowed.
2.7. The macrostructure of the sheets should be free of traces of a shrinkage cavity, delamination, foreign inclusions and cracks.
3. RULES OF ACCEPTANCE AND TEST METHODS
3.1. Acceptance rules and test methods must comply with the following additions specified in GOST 7566 and GOST 5582:
- With the consent of the consumer, it is allowed to combine sheets of different heats of the same brand into one batch weighing up to 1 ton.
- Grain size control is carried out according to GOST 5639, macrostructure control — according to the method of the supplier.
- In case of unsatisfactory test results of at least one sample, repeat the test on a double number of samples. If the retest results are unsatisfactory, the batch is rejected.
The supplier is given the right to subject the rejected lot to re-sorting and additional processing and re-present it for acceptance. In this case, the sheets can be re-heat treated once.
4. PACKAGING, LABELING, REGISTRATION OF DOCUMENTATION
4.1. Packing, marking and documentation — according to GOST 7566 and GOST 5582 with the following additions:
- Each sheet must be stamped or applied with an electric pencil or indelible paint with a stamp indicating: steel or alloy grade (or from a conventional designation); heat number (or conventional number, OTK stamp).
- Sheets made of alloys of grades KhN28VMAB-VD (EP126-VD), KhN38VT-VD (EI703-VD), KhN38VB-VD (EI703B-VD) are additionally marked with the index «VD» through a dash to the grade, from alloy grade KhN50VMKTUR-ID (EP99- ID) — with the index «ID» through a dash to the brand.
- Sheets are delivered in bundles weighing no more than 6 tons, and at the request of the consumer — in bundles weighing no more than 80 kg.
- By agreement of the parties, sheets can be packed in any container.
- Two tags are attached to each pack indicating the grade of steel or alloy, heat number, batch number, sheet size, technical specification number.
- The quality document must indicate the results of all tests, and the conditional numbers of steel or alloy grades and heat numbers must be deciphered.
4.2. Sutunka is supplied according to technical specifications TU 14−1-1214−75 for sheets made of alloys of grades XN50MVKTUR (EP99-ID), KhN77TYuR (EI437B) — with surface group II, from steel 10X100N20T2R (EI696A) and alloy KhN28VMAB (EP126) — with IV surface group. The workpiece is supplied according to the technical specifications TU 14−1-1213−75 in the form of a square of 125 mm — for sheets of steel and alloys of grades ХН75МБТЮ (ЭИ602), ХН78Т (ЭИ435), 12Х25Н16Г7АР (ЭИ835) — with a surface group IV, made of alloy grades KhN38VT (EI703), KhN38VT-VD (EI703-VD) — with surface group II; from alloy grade ХН60ВТ (ЭИ868) — in the form of a 60х140 mm strip with a surface group IV.
5. TRANSPORTATION AND STORAGE
5.1. Transportation and storage in accordance with GOST 7566.
Note. Contract prices apply to sheets according to these specifications.
The examination was carried out by TsSSM FSUE TsNIIchermet
«14» .08.2000
Deputy Director of the Center for Social and Media Studies V.D. Khromov
nine
TU 14−1-1747−76
application
Reference
LAST ND,
referenced in the text of the specification
| ND designation | Item number where the link is |
| GOST 5582−75 | 3.1; 4.1. |
| GOST 5632−72 | 2.1 |
| GOST 5639−82 | 3.1 |
| GOST 7566−94 | 3.1; 4.1 |
| GOST 19904−90 | 1.1; Appendix 2 |
| TU 14−1-1213−75 | 4.2 |
| TU 14−1-1214−75 | 4.2 |
ten
TU 14−1-1747−76
Appendix 2
Mandatory
| Name of the type of product according to NTD | Product type code according to VKG OKP | ||
| Cold-rolled thin-sheet steel from heat-resistant steels and alloys | 09 9300 | ||
| Blocks by OKP | Designation according to NTD | OKP codes | |
| Steel grades | 10Х11Н20Т2Р (ЭИ696А) KhN78T (EI435) KhN75MBTYu (EI602) KhN38VT (EI703), KhN38VT-VD (EI703-VD) 12Х2516Г7АР (ЭИ835) |
8537 8865 8863 8859 8812 8811 8528 8831 8821 8801 | |
| Profiles | BT PN GOST 19904 | 7225 | |
| Technical requirements | TU 14−1-1747−76 | 5740 | |
| Order forms and delivery terms | n / a | 00 | |
