TU 14-1-3577-2016
OKP 12 3300 | OTK LPC-3 77.140.50 Group B32 21 APPROVED: Director of TsSSM FSUE Chairman of TC 375 «Metal products from black G.N. Eremin «27» .07.2016 |
STEEL TAPE 08KH15N5D2T-SH (EP410-SH, VNS2-SH)
TECHNICAL CONDITIONS
TU 14−1-3577−2016
(instead of TU 14−1-3577−83)
Holder of the original: TsSSM FGUP TsNIIchermet im. I.P. Bardeen «
Valid from 01.10.2016 AGREEDHead of NIO FSUE «VIAM» No.I-16−9779 O.G. Ospennikova From 16.06.2016 Technical Director of JSC «Metallurgical plant» Elektrostal « No. 1063-PS / 13 I.V. Boars From 25.07.2016 Technical Director of PJSC «Ashinsky No. 16−05a / 266 D.S. Yakshuk From 22.06.2017 |
Center for standardization DEVELOPEDHead department of standardization S.A. Gorshkov «17» .05.2016 FSUE TsNIIchermet them. I.P. Bardeen REGISTERED No. 005/026200-ChM-00716 On page 7 |
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These specifications apply to a strip made of steel grade 08Kh15N5D2T-Sh (EP410-Sh, VNS2-Sh), melted by the method of electroslag remelting.
Examples of symbols:
Tape 0.50 mm thick, 400 mm wide, cold-worked (N), increased manufacturing accuracy (PT), with unedged edge (NO), made of steel grade 08X15N5D2T-Sh (EP410-Sh, VNS2-Sh), the second group of surface class B (2B):
Tape 0.50x400-N-PT-NO-08X15N5D2T-Sh (EP410-Sh, VNS2-Sh) -2V TU 14−1-3577−2016.
Ribbon 0.60 mm thick, 250 mm wide, soft (M), normal manufacturing accuracy (NT), with a cut edge (O), with heat treatment of samples according to mode 2, made of steel grade 08Kh15N5D2T-Sh (EP410-Sh, VNS2 -Sh):
Tape 0.60x250-M-NT-O-2−08X15N5D2T-Sh (EP410-Sh, VNS2-Sh) TU 14−1-3577−2016.
The list of normative documents (ND), which are referenced in the text of the technical specifications, is given in Appendix A.
Steel grade and strip codes are given in Appendix B.
1. Range
1.1. The tape is made with a thickness of 0.30 to 1.20 mm, inclusive, and a width of 100 to 400 mm, inclusive.
The thickness of the tape, maximum deviations in thickness and width must comply with the requirements of GOST 4986.
Heat-treated, soft tape (M) is supplied with normal manufacturing accuracy (NT), cold-worked tape (N) — with increased manufacturing accuracy (PT).
1.2. The tape is made with an edged (O) or unedged (BUT) edge.
1.3. The tape is supplied in rolls or in rolls of welded rolled stock.
When a strip is supplied from a welded strip, the weld seam is not a rejection feature and is noted on one side with a strip thickness of more than 0.3 mm.
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1.4. The deviation from flatness on a piece of tape with a length of 1 m must correspond to table 1.
Table 1
In millimeters | ||
Belt thickness | Deviation from flatness, no more | |
for soft tape | for cold-worked tape | |
0.30 to 0.50 incl. | thirty | 12 |
Over 0.50 to 1.20 incl. | 20 | 20 |
2. Technical requirements
2.1. The chemical composition of steel grade 08Kh15N5D2T-Sh (EP410-Sh, VNS2-Sh) according to the ladle sample must correspond to that indicated in Table 2.
table 2
Mass fraction of elements,% | ||||||||
Carbon | Silicon | Manganese | Sulfur | Phosphorus | Chromium | Nickel | Copper | Titanium |
no more | 14.00−15.00 | 4.70−5.50 | 1.75−2.50 | 0.15−0.30 | ||||
0.08 | 0.70 | 0.70 | 0.018 | 0.020 |
2.1.1. The following deviations from the mass fraction of chemical elements are allowed in the finished product: for manganese, silicon and copper — plus 0.10% of each element, for chromium — 0.50% minutes, for nickel — plus 0.20%, for phosphorus — plus 0.005%; for other elements — in accordance with GOST 5632.
2.1.2. Mass fraction of residual elements — in accordance with GOST 5632.
2.2. The tape is supplied in a heat-treated soft (M) state without tempering or cold-worked (H) state. Delivery status is specified in the order.
2.2.1. Recommended heat treatment mode for tape:
— normalization from temperature (950−975) ° С,
— vacation at a temperature of (200−350) ° С, exposure for 8 hours.
If the mechanical properties meet the requirements of Table 3, after normalization, tempering at a temperature of (200−350) ° C is allowed not to be carried out.
2.2.2. When the tape is delivered in a cold worked state, normalization from a temperature of (950−975) ° C is carried out before the cold working.
2.3. The mechanical properties of the tape as delivered and on thermally treated samples must correspond to those indicated in Table 3.
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Table 3
Ribbon delivery status | Heat treatment of control samples | Mechanical properties, not less | ||
Ultimate tensile strength σ in N / mm 2 (kgf / mm 2) | Yield strength σ 0.2 N / mm 2 (kgf / mm 2) h> 0.6 mm |
Elongation, δ 50 ,% | ||
Soft | Without additional heat treatment (delivery condition) | 980 (100) | 780 (80) | eight |
Soft | Mode 1 Aging at a temperature of (450 ± 10) ° С, Exposure 1 h. ± 10 min. |
1230 (125) | 1080 (110) | nine |
Mode 2 Aging at a temperature of (510 ± 10) ° С, Exposure 2.5 h. ± 10 min. |
1130 (115) | 980 (100) | eight | |
Cold-worked | Aging at a temperature of (450 ± 10) ° С, Exposure 1 h. ± 10 min. |
1370 (140) | 1275 (130) | five |
Notes
|
2.4. The surface quality of the hard-worked strip must correspond to the second group and the surface quality class «B» or «G» — according to GOST 4986.
The surface of the soft tape should be free of scale, ripples and traces of overgrazing.
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On both sides of the soft tape, individual small scratches, prints, dents and gentle stripping are allowed at a depth of not more than half of the maximum deviations in thickness.
The roughness of the surface (parameter R a) of the soft tape must correspond to the class «G» — according to GOST 4986.
Gray color of the surface of the soft tape with different shades is allowed. The dark color of the surface is not a fault.
2.5. The tape as delivered (soft) is tested for bending on a mandrel with a radius equal to 2.5 x b and 3.0 x b, where b is the nominal thickness of the tape. Bending angle 180 °.
3. Acceptance rules and test methods
3.1. Acceptance rules and test methods for tape — in accordance with GOST 4986 with the following additions.
3.1.1. The yield stress of the tape is determined at a thickness of 0.6 mm or more.
3.1.2. Tests of mechanical properties are carried out in accordance with GOST 11701 at an estimated length
3.1.3. The thickness of the tape is controlled with a micrometer in accordance with GOST 6507, the width — with a tape measure in accordance with GOST 7502.
3.1.4. Bending tests are carried out on longitudinal specimens in accordance with GOST 14019.
4. Marking, packaging, paperwork, transportation and storage
4.1. Marking, packaging, documentation, transportation and storage of the tape must comply with the requirements of GOST 4986.
Expertise conducted by TsSSM FSUE
«TsNIIchermet them. I.P. Bardeen «:
«16» .07.2016
Head department of standardization
metal products S.A. Gorshkov
Appendix A
(reference)
List of normative documents (ND) for which there are
references in the text of the specification
ND designation | Item number where the link is |
GOST 4986−79 | 1.1, 2.4, 3.1, 4.1 |
GOST 5632−2014 | 2.1.1, 2.1.2 |
GOST 6507−90 | 3.1.3 |
GOST 7502−98 | 3.1.3 |
GOST 11701−84 | 3.1.2 |
GOST 14019−2003 | 3.1.4 |