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Steel 08KH17N5M3 (ЭИ925)

Steel 10Х18Н5Г9АС4 (EP492; VNS-3) Steel 10Х32Н4Д (EP529) Steel 10Х17Н5М2 (EP405) Steel 10Х17Н13М3Т (ЭИ432) Steel 10Х17Н13М2Т (ЭИ448) Steel 10Х14Г14Н3 (DI-6) Steel 10Х14АГ15 (DI-13) Steel 09Cr17N7Yu1 (0Cr17N7Yu1) Steel 09Х17Н7Ю (ЭИ973) Steel 09Х16Н4Б (EP56; 1Х16Н4Б) Steel 09Х15Н8Ю1 (09Х15Н8Ю; ЭИ904) Steel 08ХГСДП Steel 08Х22Н6Т (EP53) Steel 08Х21Г11А6 (VNS-53) Steel 08Х20Н4АГ10 (НН-3) Steel 08X18Th (DI-77) Steel 08Х18Н7Г10АМ3 (08Х18Н7Г10АМ3С2) Steel 08Cr18Ni5G12AB (HH-3B) Steel 08X18H5G11BAF (HH-3BF) Steel 08X18H4G11AF (HH-3F) Steel 08Cr18Ni12T (0Cr18Ni12T) Steel 08X18H12B (EI402) Steel 08Х18Г8Н2Т (KO-3) Steel 08Cr17Ni6T (DI-21) Steel 20Х13Н4Г9 (ЭИ100) Cr17N14M3T steel Cr17N14M2T steel Steel 95X18 (EI229) Steel 95X13M3K3B2F (EP766) Steel 65X13 Steel 40X13 (4X13) Steel 30X13 (3X13) Steel 26Х14Н2 (EP208) Steel 25X17H2B Steel 25X17H2 (EP407) Steel 25Х13Н2 (ЭИ474) Steel 20X17H2 (2X17H2) Steel 08Х17Н15М3Т (ЭИ580) 18X13H3 steel Steel 15Х18Н12С4ТЮ (ЭИ654; 2Х18Н12С4ТЮ) Steel 15Х17АГ14 (ЭП213) Steel 13Х18Н10Г3С2М2 (ЗИ98) Steel 12Х21Н5Т (ЭИ811; 1Х21Н5Т) Steel 12Х18Н13АМ3 (EP878) Steel 12X18H10E (EP47) Steel 12Х17Н8Г2С2МФ (ЗИ126) Steel 12X17G9AN4 (EI878) Steel 12Х13Г12АС2Н2 (DI50) Steel 11Х13Н3 Steel 03Х16Н15М3 (ЭИ844) 04X15ST steel Steel 04X17H10M2 Steel 03Х23Н6 (ЗИ68) Steel 03Х22Н6М2 (ЗИ67) Steel 03Х21Н25М5ДБ Steel 03Х21Н21М4ГБ (ЗИ35) Steel 03Х20Н45М5Б (ChS32; 03ХН45МБ) Steel 03Х18Н12Т (000Х18Н12Т) Steel 03Х18Н12 (000Х18Н12) Steel 03X18N11 (000X18N11) Steel 03Х17Н14М2 Steel 03X17AN9 (EK177) 04X17T steel Steel 03Х15Н35Г7М6Б (EP855) Steel 03X13AG19 (ChS36) Steel 03Х12Н10МТР (EP810; VNS-25) Steel 03Х12К10М6Н4Т (EP927) Steel 03Х11Н10М2Т2 (EP853) Steel 02Х25Н22АМ2 (ChS108) Steel 02Х21Н25М5ДБ (EC5) Steel 02Х21Н21М4Г2Б (ЗИ69) 02Cr18Ni11 steel Steel 02X17H14M3 Steel 015Х16Н15М3 Steel 06Х14Н6Д2МБТ (EP817) Steel 08Х17Н13М2Т (0Х17Н13М2Т; ЭИ448) Steel 08Х10Н20Т2 (0Х10Н20Т2) Steel 08Х10Н16Т2 (0Х10Н16Т2) Steel 07X21G7AN5 (EP222) Steel 07X18N10P (EP287) Steel 07Х16Н6 (EP288; СН-2А; Х16Н6) Steel 07Х16Н4Б Steel 07Х15Н7М2 (EP35; СН-4; Х15Н8М2Ю) Steel 07Х16Н6 Steel 06X18H11 (EI684) 06X15H4DM steel Steel 08Х17Н5М3 (ЭИ925) 06X13H4DM steel Steel 06Х12Н3Д Steel 06Х12Н3Д (08Х12Н3Д) 05KhGB steel Steel 05Х20Н15АГ6 (ChS109) Steel 05Х12Н9М2С3 (EP821) Steel 05Х12Н2К3М2АФ (VNS-40) Steel 04Х32Н8 (EP535) Steel 04Х25Н5М2 (DI62) Steel 04X19MAFT Steel 04X18H10 (EI842)

Designation

Name The value
Designation GOST Cyrillic 08Х17Н5М3
Designation GOST Latin 08X17H5M3
Transliteration 08H17N5M3
The chemical elements 08Cr17Н5Mo3
Name The value
Designation GOST Cyrillic ЭИ925
Designation GOST Latin EI925
Transliteration EhI925
The chemical elements -

Description

08KH17N5M3 steel is used: for the manufacture of products, working in atmospheric conditions, acetate, sulfate and other saline environments; elastic elements; welding wire used for welding parts and welding of steel structures in energy engineering; welding electrodes.

Note

Stainless steel austenitic-martensitic class.

Standards

Name Code Standards
Metal forming. Forgings В03 GOST 25054-81
Tapes В34 GOST 4986-79, TU 14-1-2410-78
Sheets and stripes В33 GOST 5582-75, TU 14-1-2127-77, TU 14-1-2128-77, TU 14-1-2186-77, TU 14-1-2476-78
Classification, nomenclature and general norms В30 GOST 5632-72
Classification, nomenclature and general norms В20 OST 1 90005-91
Bulls. Blanks. Slabs В31 OST 3-1686-90, TU 14-1-1213-75, TU 14-1-1214-75
Thermal and thermochemical treatment of metals В04 STP 26.260.484-2004
Sectional and shaped rolling В32 TU 14-1-1831-76, TU 14-11-245-88
Welding and cutting of metals. Soldering, riveting В05 TU 14-1-997-74, TU 14-1-997-2012

Chemical composition

Standard C S P Mn Cr Si Ni Fe Cu V Ti Mo W
TU 14-1-997-74 0.06-0.1 ≤0.02 ≤0.035 ≤0.8 16-17.5 ≤0.8 4.5-5.5 The rest ≤0.2 - - 3-3.5 -
GOST 5632-72 0.06-0.1 ≤0.02 ≤0.035 ≤0.8 16-17.5 ≤0.8 4.5-5.5 The rest ≤0.3 ≤0.2 ≤0.05 3-3.5 ≤0.2
TU 14-1-2410-78 0.06-0.1 ≤0.02 ≤0.035 ≤0.7 16-17.5 ≤0.7 4.5-5.5 The rest - - - 3-3.5 -
TU 14-1-2186-77 0.06-0.1 ≤0.02 ≤0.035 ≤0.7 16-17.5 ≤0.7 4.5-5.5 The rest ≤0.3 ≤0.2 ≤0.05 3-3.5 ≤0.2
Fe is the basis.
According to TU 14-1-1831-76, deviations in chemical composition are allowed: for molybdenum ± 0.020%, for carbon + 0.010%, for chromium + 0.10 / -0.50%, for nickel + 0.50%. The content of elements guaranteed by the supplier in accordance with the requirements of GOST 5632 is allowed, except for vanadium, the content of which is allowed not more than 0.10% and titanium, the content of which is allowed not more than 0.10%.
According to TU 14-1-2410-78, the chemical composition is presented for steel grade 08X17N5M3 (EI925). The mass fraction of residual elements is allowed in accordance with GOST 5632. If all the requirements of technical specifications are met in the finished product, deviations in chemical composition from the norms are allowed: by chroma ± 0.10%, nickel ± 0.10%, molybdenum ± 0.020%.

Mechanical characteristics

Section, mm sT|s0,2, MPa σB, MPa d5, % d4 y, % kJ/m2, кДж/м2 Brinell hardness number, MPa HRC
Gradation of performance properties of the finished heat-treated parts for OST 1 90005-91
- - 1180-1370 - - - - 341-388 37-41
Cold-rolled steel strip of 0.05-2.00 mm according to GOST 4986-79 in the delivery condition. Samples. Vacation at 440-460 °C (aging 1 HR)
0.2-2 - ≥1230 - ≥4 - - - -
0.2 - ≥1230 - ≥2 - - - -
0.2-2 - ≥1130 - ≥6 - - - -
0.2 - ≥1130 - ≥3 - - - -
Cold-rolled steel strip of 0.05-2.00 mm according to GOST 4986-79. Normalization at 1030-1070 °C (samples)
0.2-2 - ≤1130 - ≥16 - - - -
0.2 - ≤1130 - ≥8 - - - -
Cold-rolled steel strip of 0.05-2.00 mm according to GOST 4986-79. Normalization at 940-960 °C, cold treatment at -70 °C (exposure 2 hours) + Vacation at 440-460 °C (exposure for 1 h) (samples)
0.2-2 - ≥1180 - ≥6 - - - -
0.2 - ≥1180 - ≥3 - - - -
Sheet thin cold-rolled. Normalization at 1030-1080 °C
0.5-0.8 ≥343 ≥880 ≥18 - - - - -
Hot rolled sheet (of 1.5-3.9 mm) and cold rolled (0,7-3,9 mm) steel according to GOST 5582-75. Quenching in water or air from 1030-1080 °C
- ≥610 ≤1180 ≥20 - - - - -
Hot rolled sheet (of 1.5-3.9 mm) and cold rolled (0,7-3,9 mm) steel according to GOST 5582-75. Annealing in air or in water 930-950 °C, cold treatment at minus 70 °C for 2 h+ Vacation at 440-460 °C (aging for 1 h), air cooling
≥885 ≥1180 ≥9 - - - - -
Forgings. Annealing in air from 1030-1080 °C
≤1000 ≥833 ≥1176 ≥10 - ≥35 ≥392 - -
Bars hot rolled and forged on the other 14-1-1831-76. Longitudinal samples: Annealing in air or in water from 940-960 °C, cold treatment at minus 70 °C for 2 hours+ aged at 440-460 °C (aging for 1 h), air cooling
≥850 ≥1200 ≥12 - ≥50 ≥490 - -
Bars hot rolled and forged at STP 26.260.484-2004. Quenching in water or air from 980-1020 °C, cold treatment at -70 °C (aged for at least 2 h) + Aging at 350-380 °C, air cooling
≥850 ≥1200 ≥12 - ≥50 ≥392 - -

Description mechanical marks

Name Description
Section Section
sT|s0,2 Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2%
σB Limit short-term strength
d5 Elongation after rupture
d4 Elongation after rupture
y The relative narrowing
kJ/m2 Toughness
HRC Rockwell hardness (indenter diamond spheroconical)

Technological properties

Name The value
Weldability Without restrictions.
Macrostructure and contamination Macrostructure of steel shall be no traces of shrinkage, delamination, foreign inclusions.
Features of heat treatment After quenching, the steel has a structure of unstable austenite with a small amount of martensite. In this state, the steel doesn't strengthen aging. Hardening as a result of ageing after pre-deformation or cold treatment products that causes the formation of martensite. Parts, components and apparatus made of nettervibration sheets, strips, extruded profiles, as well as from bars, rods and forgings, are subjected to full cycle of hardening heat treatment: a) annealing (for obtaining a structure of austenite); b) cold treatment at minus 70 °C (aging for at least 2 h, while cooling in the refrigerating chamber, the exposure time is doubled); C) aging (to achieve a specified level of properties). Products, to achieve maximum corrosion resistance, is subjected to heat treatment by mode: heating to 1000±20 °C, exposure with wall thickness up to 15 mm - 30 min; more than 15 mm - 30 min + 1-2 min per 1 mm of maximum wall thickness; cooling in water or air; cold treatment; aging at 350-380 °C, dwell time 1 hour + 1 min per 1 mm cross section; the cooling air. To obtain maximum strength characteristics of aging must be carried out at 400-480 °C, dwell time 1 hour + 1 min per 1 mm cross section, but the steel acquires the tendency to intergranular corrosion. In the hardening of products with wall thickness up to 8 mm, the cooling is carried out on the tranquil air, the products wall thickness more than 8 mm, and also products from bar and forgings are cooled in water. Slow cooling of products (with oven or in bulk) are not allowed. The gap between the operations of quenching and cold treatment should not exceed 12h. Before cold processing products shall not be subjected to heating or exposure to temperatures from 0 to minus 40 °C. cooling Time of the product from room temperature to minus 70 °C should be minimal. When obtaining low values of relative narrowing and toughness in comparison with specified in the normative documents, what is usually observed in large forgings, it is recommended obezvrezivate annealing regime: heating to 500±10 °C , exposure 30 h for sections up to 50 mm and 50 h for sections more than 50 mm. the Highest rate of bezodiazepine observed in the martensitic structure, so before bezodiazepines structure of the steel is transferred to a martensitic state by heat treatment at minus 70 °C. To obtain the desired properties after obezbolivaushee heat treatment necessary heat treatment for hardening of the regime *.

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