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Steel 12H21N5T (ЭИ811; 1Х21Н5Т)

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 12Х21Н5Т
Designation GOST Latin 12X21H5T
Transliteration 12H21N5T
The chemical elements 12Cr21Н5Ti
Name The value
Designation GOST Cyrillic ЭИ811
Designation GOST Latin EI811
Transliteration EhI811
The chemical elements -
Name The value
Designation GOST Cyrillic 1Х21Н5Т
Designation GOST Latin 1X21H5T
Transliteration 1H21N5T
The chemical elements 1Cr21Н5Ti

Description

12H21N5T steel is used: for the manufacture of welded and brazed structures in corrosive environments; solid-rolled rings for different purposes; welding wire.

Note

Austenite corrosion resistant steel-ferritic class.
Steel has higher strength compared with steel 08KH22N6T and the best ability for soldering in comparison with steel 08KH18N10T.

Standards

Name Code Standards
Pipes steel and connecting parts to them В62 GOST 11068-81, TU 14-3-1327-85
Tapes В34 GOST 4986-79, TU 14-1-2298-77, TU 14-1-2299-77
Sheets and stripes В33 GOST 5582-75, GOST 7350-77, TU 14-1-1150-74, TU 14-1-2476-78, TU 14-1-617-73
Classification, nomenclature and general norms В30 GOST 5632-72
Sectional and shaped rolling В32 GOST 5949-75, OST 1 92049-76, TU 14-1-1273-75, TU 14-1-1283-75, TU 14-11-245-88
Bulls. Blanks. Slabs В31 OST 3-1686-90, OST 1 90232-76
Thermal and thermochemical treatment of metals В04 STP 26.260.484-2004
Welding and cutting of metals. Soldering, riveting В05 TU 14-1-1464-75
Metal forming. Forgings В03 TU 3-1585-89, TU 14-1-1530-75, TU 14-1-2918-80

Chemical composition

Standard C S P Mn Cr Si Ni Fe Cu Al V Ti Mo W
TU 14-1-2476-78 0.09-0.14 ≤0.02 ≤0.035 ≤0.8 20-22 ≤0.8 5.3-5.8 The rest - ≤0.08 - 0.25-0.5 - -
TU 14-1-2918-80 0.09-0.14 ≤0.02 ≤0.03 ≤0.8 20-22 ≤0.8 4.8-5.8 The rest ≤0.3 ≤0.08 ≤0.2 0.25-0.5 ≤0.3 ≤0.2
TU 14-3-1327-85 0.09-0.14 ≤0.02 ≤0.025 ≤0.8 20-22 ≤0.8 5.3-5.8 The rest - ≤0.08 - 0.25-0.5 - -
GOST 5632-72 0.09-0.14 ≤0.025 ≤0.035 ≤0.8 20-22 ≤0.8 4.8-5.8 The rest ≤0.3 ≤0.08 ≤0.2 0.25-0.5 ≤0.3 ≤0.2
Fe is the basis.
According to TU 14-1-2918-80 the chemical composition is given for steel grade 12Х21Н5Т-ВД. Cerium is introduced into steel by calculation and chemical analysis is not determined.
According to TU 14-3-1327-85, the chemical composition is given for steel grades 12Х21Н5Т (ЭИ811), 12Х21Н5Т-ВД (ЭИ811-ВД). The residual content of elements is allowed in accordance with GOST 5632. At the same time, deviations are allowed: for carbon +0.010%, for nickel -0.20%, for titanium -0.050%. For steel 12Х21Н5Т-ВД (ЭИ811-ВД) the sulfur content should not be more than 0,015%.
According to TU 14-1-2476-78, the chemical composition is given for steel grade chemical composition is given for steel grades 12Х21Н5Т (ЭИ811), 12Х21Н5Т-ВД (ЭИ811-ВД), 12Х21Н5Т-Ш (ЭИ811-Ш). In the finished product, deviations in chemical composition are allowed: for titanium -0,050%, for nickel -0,20%, for carbon +0,010%, for aluminum +0,020%. For the Zaporizhstal plant, nickel content limits of 4.80-5.80% are allowed in steel. In the finished product, deviations in the chemical composition of the remaining elements are allowed in accordance with GOST 5632.

Mechanical characteristics

Section, mm sT|s0,2, MPa σB, MPa d5, % d4 y, % kJ/m2, кДж/м2
Ring welded at OST 1 90232-76. Quenching in water or air from 950-1050 °C
- ≥343 ≥686 ≥16 - ≥45 ≥588
- ≥297 ≥637 ≥12 - ≥25 ≥441
Ring forged in OST 1 92049-76. Quenching in water or air from 950-1050 °C
15 ≥345 ≥685 ≥12 - ≥36 ≥441
15 ≥345 ≥685 ≥15 - ≥38 ≥490
Cold-rolled steel strip of 0.05-2.00 mm according to GOST 4986-79. Quenching in water or air from 950-1050 °C (samples)
0.2-2 - ≥690 - ≥15 - -
0.2 - ≥690 - ≥8 - -
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 1000-1080 °C
- ≥440 ≥690 ≥18 - - -
Hot rolled sheet (4,0-25,0 mm) and cold rolled (4,0-5,0 mm) steel according to GOST 7350-77. Quenching in water or air from 950-1050 °C
- ≥390 ≥690 ≥14 - - -
Cold-rolled sheet (0.7 to 5.0 mm) and hot-rolled steel (3,0-6,0 mm) made of steel 12H21N5T in the state of delivery on the other 14-1-2476-78. Quenching in water or air from 1000-1080 °C. the elongation specified for the transverse specimens / samples for longitudinal
≥441 ≥686 ≥18/20 - - -
Bars hot rolled and forged according to GOST 5949-75. Forgings. Quenching in water or air from 950-1050 °C
≥315 ≥690 ≥16 - ≥45 ≥588
Bars hot rolled and forged according to GOST 5949-75. Forgings. Annealing in air 1000-1050 °C + cold Treatment at minus 60-100 °C (endurance 4 hours) + Vacation at 100-200 °C (aging 2-3h), air cooling
≥345 ≥690 ≥16 - ≥45 ≥588
Bars hot rolled and forged at STP 26.260.484-2004. Annealing in air 1020-1050 NN the fire °C
≥350 ≥700 ≥20 - ≥40 ≥588
Tubes seamless cold - and warm in the delivery condition on the other 14-3-1327-85 after termoobrabotki and etching
- 343-588 686-932 ≥17 - - -
Tubes seamless cold - and warm on the other 14-3-1327-85 after hot processing. Quenching in water from 950-1000 °C (exposure for 1 h) and cooling with furnace at a rate of 100 °C/h to 300 °C, then air cooling
- - - - - ≥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

Technological properties

Name The value
Macrostructure and contamination Macrostructure of steel shall be no traces of shrinkage, delamination, foreign inclusions.
Features of heat treatment Steel products to eliminate the tendency to intergranular corrosion are subjected to hardening regime: heating to 1050±25 °C, exposure during heating for quenching for products with wall thickness up to 10 mm - 30 min, over 10 mm — 20 min + 1 min per 1 mm max thickness cooling in water or air. Products austenite-ferritic steels do not require heat treatment after welding.

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