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Steel 12X18H9T (Х18Н9Т)

Steel 12Х11В2МФ (ЭИ756) Steel 08Х21Н6М2Т (EP54) Steel 10Х12Н3М2ФА (ЦД-М) Steel 10Х12НД (0Х12НД) Steel 10Х13Г12БС2Н2Д2 (DI59) Steel 10X18G14AN4 (EP197; X18G14AN4) Steel 10Х32Н8 (EP263; Х32Н8) Steel 10Х9МФБ (DI82) 08X14F steel Steel 12X13 (1X13) Steel 12X18H10T (X18H10T) Steel 12Х18Н12Т (Х18Н12Т) 12X18H9SMR steel (EP414; Х18Н9СМР) Steel 12Х18Н9Т (Х18Н9Т) Steel 16Х20К6Н2МВФ (EP768; VNS-22) Steel 19Х20Н4АМ3Д2С (EC7) Steel 90G29Yu9VBM (DI38; 90G29Yu9VMBF; DI38F) Steel 03Х24Н6АМ3 (ЗИ130) Steel 015Х14Н19С6Б (ChS110) Steel 015Х20Н25Г2Б (EP754) Steel 02Х24Н6АМ3 (DI91) Steel 03N18K9M5T (EP637; MS200) Steel 03Х16Н15М3Б (026Х16Н15М3Б; ЭИ844Б) Steel 03Х18Н9Т (Х18Н9Т) Steel 03Х19Н15Г6М2АВ2 (ChS39) Steel 03Х21Н32М3Б (EP864; ČS33) Steel 08Х20Н5АГ12МФ (DI8) Steel 03Х9К14Н6М3Д (EP921; 03Х9К14Н6М3ДФ) Steel 04Х11Н9М2Д2 (EP832; 04Х11Н9М2Д2ТЮ) Steel 04Х13Н4АГ20 (ChS52) Steel 04Х14К13Н4М3ТВ (EP767) Steel 05Х15Н9Г6АМ (ChS31) Steel 05Х21Н12Г2БРч (DI94) Steel 07X13AG20 (ChS46)

Designation

Name The value
Designation GOST Cyrillic 12Х18Н9Т
Designation GOST Latin 12X18H9T
Transliteration 12H18N9T
The chemical elements 12Cr18Н9Ti
Name The value
Designation GOST Cyrillic Х18Н9Т
Designation GOST Latin X18H9T
Transliteration H18N9T
The chemical elements Cr18Н9Ti

Description

12X18H9T steel is used: for the manufacture of welded equipment, pipes, fittings furnace parts, heat exchangers, muffles, parts, exhaust systems, sheet metal and high-grade parts; vehicles and vessels operating at temperatures from -196 to +600 °C under pressure and in the presence of corrosive media up to +350 °C; details of aircraft construction; powder used in the production of goods and permeable laminated and sintered porous tape, filters for the filtration of lubricating oils, fuels, alkalis, air and other gases and fluids, as well as for the manufacture of plamegasiteli, porous coolers; woven wire mesh twill weave, used as reinforcement material in the manufacture of asbestine sheets, for separating granular materials according to grain size, filtration and other purposes; ropes a double and a triple lay for special working conditions. Steel brand 12X18H9T is recommended to be applied in the form of long products and hot rolled metal sheet, not manufactured on continuous rolling mills.

Note

Steel corrosion resistant, heatresistant and heat-proof. Stabilized chromium-Nickel steel of austenitic class.
The recommended maximum operating temperature for a long time +800 °C, for a very long time +600 °C.
Temperature intense scaling in air +850 °C.
Steel is unstable in sulfur-containing environments and is used when cannot be applied, Nickel-free steel.
Powder steel Х18Н9Т made by the joint recovery of a mixture of metal oxides and metal powders with calcium hydride.

Standards

Name Code Standards
Sheets and stripes В23 GOST 103-2006
Sectional and shaped rolling В22 GOST 1133-71, GOST 2590-2006, GOST 2591-2006, GOST 2879-2006
Test methods. Packaging. Marking В09 GOST 11878-66
Solid alloys, metal-ceramic products and powders, metal В56 GOST 13084-88
Steel alloy wire В73 GOST 18143-72, TU 14-4-867-77
Metal forming. Forgings В03 GOST 25054-81, OST 5Р.9125-84, ST ЦКБА 010-2004
Sheets and stripes В33 GOST 4405-75, GOST 7350-77
Classification, nomenclature and general norms В30 GOST 5632-72
Sectional and shaped rolling В32 GOST 5949-75, GOST 7417-75, GOST 8559-75, GOST 8560-78, GOST 14955-77, GOST 18907-73, TU 14-1-1673-76, TU 14-1-2972-80, TU 14-1-3564-83, TU 14-1-3581-83, TU 14-1-377-72, TU 14-1-3818-84, TU 14-1-3957-85, TU 14-1-748-73, TU 14-11-245-88, TU 14-1-1271-75
Classification, nomenclature and general norms В20 OST 1 90005-91
Bulls. Blanks. Slabs В21 OST 1 90176-75
Bulls. Blanks. Slabs В31 OST 3-1686-90, OST 95-29-72, TU 14-1-1214-75
Tapes В34 OST 5.9093-72, TU 14-1-1370-75, TU 14-1-2192-77
Thermal and thermochemical treatment of metals В04 STP 26.260.484-2004, ST ЦКБА 016-2005
Metal nets В76 TU 14-4-1569-89, TU 14-4-1561-89, TU 14-4-507-99
Steel ropes В75 TU 14-4-278-73

Chemical composition

Standard C S P Mn Cr Si Ni Fe Cu V Ti Mo Ca W O
TU 14-1-3581-83 ≤0.12 ≤0.02 ≤0.03 ≤2 17-19 ≤0.8 8-9.5 The rest ≤0.4 ≤0.2 - ≤0.3 - ≤0.2 -
GOST 5632-72 ≤0.12 ≤0.02 ≤0.035 ≤2 17-19 ≤0.8 8-9.5 The rest ≤0.4 ≤0.2 - ≤0.5 - ≤0.2 -
TU 14-1-748-73 ≤0.12 ≤0.02 ≤0.04 ≤2 17-19 ≤0.8 8-9.5 The rest ≤0.4 ≤0.2 - ≤0.5 - ≤0.2 -
GOST 13084-88 0.05-0.12 ≤0.02 ≤0.03 ≤0.35 16-20 ≤0.1 7-10 The rest - - 0.5-0.8 - ≤0.15 - ≤0.35
Fe is the basis.
According to GOST 5632-72 and TU 14-1-748-73, the content of Ti% = 5C% is 0.8%. For aircraft components, the Mo content is ≤ 0.30%.
According to GOST 13084-88 the chemical composition is given for powder grade ПХ18Н9Т.
According to TU 14-1-3581-83, the chemical composition is given for 12Х18Н9Т-ВД steel. The content of Ti% = 5C% is 0.8%.

Mechanical characteristics

Section, mm sT|s0,2, MPa σB, MPa d5, % d y, % kJ/m2, кДж/м2 Brinell hardness number, MPa
Sheet 2 mm. cold deformation with the degree of cold plastic deformation 60 %
- ≥1290 ≥1330 ≥10 - - - -
Sheet. Quenching in water from 1050 °C (indicate the degree of compression in %)
- 280-400 550-650 40-50 - - - -
Gradation of performance properties of the finished heat-treated parts for OST 1 90005-91
- - 540-800 - - - - -
Billet (forgings) OST 95-29-72 in the state of delivery: Austenization at 1020-1100 °C, cooling in water or air
≥246 ≥520 ≥37 - - - -
Sheet 2 mm. cold deformation with the degree of cold plastic deformation 60 %
- ≥970 ≥1080 ≥6 - - - -
Sheet. Quenching in water from 1050 °C (indicate the degree of compression in %)
- ≥900 ≥950 ≥12 - - - -
Billet (forgings) OST 95-29-72 in the state of delivery: Austenization at 1020-1100 °C, cooling in water or air
≥186 ≥372 - - - - -
Sheet 2 mm. cold deformation with the degree of cold plastic deformation 60 %
- ≥780 ≥870 ≥10 - - - -
Sheet. Quenching in water from 1050 °C (indicate the degree of compression in %)
- ≥1150 ≥1250 ≥3 - - - -
Blank pieces of pipe fittings according to ST CKBA 016-2005. Quenching in water or air with 1020-1100 °C (aging of 1.0 to 1.5 min/mm of maximum cross section but not less than 0.5 h)
≤60 ≥196 ≥510 ≥40 - ≥55 - 121-179
Sheet 2 mm. cold deformation with the degree of cold plastic deformation 60 %
- ≥360 ≥420 ≥29 - - - -
Blank pieces of pipe fittings according to ST CKBA 016-2005. Quenching in water or air with 1020-1100 °C (aging of 1.0 to 1.5 min/mm of maximum cross section but not less than 0.5 h)
100-160 ≥196 ≥510 ≥37 - ≥45 - 121-179
A sample with diameter 10 mm, length 50 mm, laminated. The rate of deformation of 20 mm/min strain Rate 0,007 1/C
- ≥155 ≥200 ≥27 - ≥57 - -
Blank pieces of pipe fittings according to ST CKBA 016-2005. Quenching in water or air with 1020-1100 °C (aging of 1.0 to 1.5 min/mm of maximum cross section but not less than 0.5 h)
160-500 ≥196 ≥510 ≥37 - ≥44 - 121-179
A sample with diameter 10 mm, length 50 mm, laminated. The rate of deformation of 20 mm/min strain Rate 0,007 1/C
- ≥110 ≥120 ≥41 - ≥90 - -
Blank pieces of pipe fittings according to ST CKBA 016-2005. Quenching in water or air with 1020-1100 °C (aging of 1.0 to 1.5 min/mm of maximum cross section but not less than 0.5 h)
60-100 ≥196 ≥510 ≥39 - ≥50 - 121-179
A sample with diameter 10 mm, length 50 mm, laminated. The rate of deformation of 20 mm/min strain Rate 0,007 1/C
- ≥58 ≥66 ≥50 - ≥95 - -
Quenching in water or air from 1050-1100 °C
300-500 ≥216 ≥510 ≥35 - ≥40 - -
A sample with diameter 10 mm, length 50 mm, laminated. The rate of deformation of 20 mm/min strain Rate 0,007 1/C
- ≥35 ≥38 ≥66 - ≥99 - -
Quenching in water or air from 1050-1100 °C
1-6 - 540-880 ≥20 - - - -
A sample with diameter 10 mm, length 50 mm, laminated. The rate of deformation of 20 mm/min strain Rate 0,007 1/C
- ≥22 ≥26 ≥79 - ≥100 - -
Hot rolled sheet (4,0-50,0 mm) and cold rolled (4,0-5,0 mm) steel according to GOST 7350-77. Quenching in water or air from 1030-1080 °C
- ≥215 ≥530 ≥38 - - - -
Bars with a diameter of 18-25 mm. Quenching in water from 1050 °C
- ≥280 ≥620 ≥41 - ≥63 - -
Forgings for parts resistant to the ICC. Quenching from 1000-1050 °C in oil, water or air
100-300 ≥196 ≥540 ≥38 - ≥45 - 121-179
Bars with a diameter of 18-25 mm. Quenching in water from 1050 °C
- ≥200 ≥460 ≥31 - ≥65 - -
Forgings for parts resistant to the ICC. Quenching from 1000-1050 °C in oil, water or air
60-100 ≥196 ≥540 ≥39 - ≥50 - 121-179
Bars with a diameter of 18-25 mm. Quenching in water from 1050 °C
- ≥180 ≥450 ≥31 - ≥65 - -
Forgings for parts resistant to the ICC. Quenching from 1000-1050 °C in oil, water or air
60 ≥196 ≥540 ≥40 - ≥55 - 121-179
Bars with a diameter of 18-25 mm. Quenching in water from 1050 °C
- ≥180 ≥450 ≥29 - ≥65 - -
The wire is heat-treated in the delivery condition according to GOST 18143-72 (elongation, % at rated sample length of 100 mm is specified for the wire of the 1st class in brackets are for 2nd class)
0.2-1 - 590-880 - ≥25 (≥20) - - -
Bars with a diameter of 18-25 mm. Quenching in water from 1050 °C
- ≥180 ≥400 ≥25 - ≥61 - -
The wire is heat-treated in the delivery condition according to GOST 18143-72 (elongation, % at rated sample length of 100 mm is specified for the wire of the 1st class in brackets are for 2nd class)
1.1-7.5 - 540-830 - ≥25 (≥20) - - -
Bars with a diameter of 18-25 mm. Quenching in water from 1050 °C
- ≥160 ≥280 ≥26 - ≥59 - -
Cold drawn wire in the delivery state according to GOST 18143-72
0.2-3 - 1130-1470 - - - - -
Bars with a diameter of 18-25 mm. Quenching in water from 1050 °C
- ≥100 ≥180 ≥35 - ≥69 - -
Cold drawn wire in the delivery state according to GOST 18143-72
3.4-7.5 - 1080-1420 - - - - -
Hire full hard. In the delivery condition, without heat treatment
1-6 - ≥1080 - - - - -
≤3.9 - ≥935 - - - - -
Bars calibrated in delivery condition (cold-worked) on the other 14-1-3581-83
20-25 ≥225 ≥539 ≥25 - ≥55 - -
Bars of polished, processed on a given strength (TS) according to GOST 18907-73
1-30 - 640-880 - ≥20 - - -
Bars hot rolled and forged GOST 5949-75 and Forming at OST 1 90176-75. Quenching in air, oil or water with 1020-1100 °C
≥196 ≥540 ≥40 - ≥55 - -
Bars hot rolled and forged at STP 26.260.484-2004. Quenching in water or air from 1050-1100 °C
≥200 ≥450 ≥25 - ≥35 ≥1960 -
Bars hot rolled and forged at STP 26.260.484-2004. Stepwise treatment regime: heating to 1050-1100 °C; the holding time at the heating for products with wall thickness up to 10 mm - 30 min, over 10 mm - 20 min + 1 min per 1 mm of maximum thickness; cooling as fast as possible to 870-900°C; holding at 870-900 °C for 2-3 hours; cooling with the furnace to 300 °C (speed of 50-100 °C/h), then in the air
≥200 ≥520 ≥35 - ≥50 - -

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
d Elongation after rupture
y The relative narrowing
kJ/m2 Toughness

Physical characteristics

Temperature Е, ГПа r, кг/м3 l, Вт/(м · °С) R, НОм · м a, 10-6 1/°С С, Дж/(кг · °С)
0 195 7900 - 725 - -
20 195 7900 - 725 - -
100 189 7860 16 792 16 469
200 182 7820 18 861 17 486
300 175 7780 20 920 176 498
400 167 7740 21 976 18 511
500 180 7690 23 1028 183 519
600 153 7650 25 1075 186 528
700 143 7600 26 1117 189 532
800 135 7560 28 1149 193 544
900 - 7510 29 1176 195 544
1000 - - - - 195 -
1200 - - - - 201 -
1100 - - - - - 548

A description of the physical symbols

Name Description
Е The normal elasticity modulus
r Density
l Coefficient of thermal conductivity
R UD. the resistivity
С Specific heat

Technological properties

Name The value
Weldability Welded without any restrictions. Welding methods: SMAW electrodes CL-11, CL-15 (providing corrosion resistance), DH-26 (used as heat-resistant no requirements ICC), ESW. Recommended subsequent heat treatment. To prevent the tendency to stab corrosion of welded assemblies running in nitric acid welded assemblies are subjected to tempering in air 970-1020 °C; the temperature should be kept at the upper limit (the speed is not less than 2,5 min/mm of maximum wall thickness, but not less than 1 hour). In the case of welding wire SV 04Х19Н11М3 or electrodes type e-07Х19Н11М3Г2Ф (grade EA-400/10U, EA-400/10T, wire St 04Х19Н11М3, etc.) applied annealing in air from 950-1050 °C (aged for at least 2.5 minutes/mm of maximum wall thickness, but not less than 1 hour). In the case of welding electrodes type e-08Х19Н10Г2МБ (stamps EA 898/21 B, etc.) to relieve residual stresses in welded assemblies: a) working at 350 °C and above; b) operating at temperatures above 350 °C, if the hardening is impractical to apply a stabilizing annealing at 850-920 °C (extract after heating the batch for at least 2 hours). To relieve residual stresses of welded assemblies operating at temperatures above 350 °C, after final mechanical machining (before lapping) if the carrying out of other types of heat treatment applied is inappropriate vacation at 375-400 °C (delay of 6-10 h), air cooling. In the case of welding of pipes with internal diameter not less than 100 mm and more to the body (without delay) in accordance with KD applies a stabilizing annealing at 950-970 °C, air cooling.
Forging temperature Start - 1200 °C, the end - 850 °C. the cross Sections up to 350 mm cooled in air.
Workability by cutting In the hardened state in HB 169 and blower SB=610 MPa Kn TV.SPL.=0,85 Kn b.St.=0,35.
Features of heat treatment Depending on assignment, working conditions, corrosive environment the product is subjected to: a) hardening (austenization); b) stabilizing annealing; C) annealing for stress relieving; d) a stepwise processing. The product is quenched in order to: a) prevent the tendency to intergranular corrosion (products can operate in temperatures up to 350 °C); b) to increase resistance against General corrosion; C) to eliminate the revealed tendency to intergranular corrosion; g) to prevent the tendency to stab corrosion (welded work product in solutions of nitric acid); d) to eliminate residual stress (products simple configuration); e) to increase the plasticity of the material. The quenching products should be carried out on mode: heating to 1050-1100 °C, items material thickness up to 10 mm cooling on air, more than 10 mm in water. Welded parts of complex configuration in order to avoid the leash is to be cooled in the air. The holding time at the heating for hardening to products with a wall thickness up to 10 mm - 30 min, over 10 mm - 20 min + 1 min per 1 mm maximum thickness. In the hardening of products, intended for operation in nitric acid, the heating temperature for hardening must be kept at the upper limit (exposure at the same weldment should be not less than 1 hour). Stabilizing annealing is applied to: a) prevent the tendency to intergranular corrosion (products work at temperatures above 350 °C); b) stress relief; C) the elimination of discovered tendency to intergranular corrosion, if for any reason hardening is inappropriate. A stabilizing annealing, for example for products and welded joints of steels in which the ratio of titanium to carbon 5 or more of niobium to carbon greater than 8. Stabilizing annealing to prevent the tendency to intergranular corrosion products, operating at temperatures over 350 °C can be subjected to steel containing not more than 0.08 % of carbon. Stabilising annealing should be carried out according to the mode: heating up to 870-900 °C, exposure time of 2-3 h, cooling in air. During heat treatment of large welded products are permitted to carry out local stabilizing annealing of closing seams in the same mode, with all welded components shall be subjected to a stabilizing annealing before welding. In the case of local stabilizing annealing is necessary to ensure both uniform heating and cooling across the length of the weld and adjacent base metal zones for a width equal to two or three widths of a seam, but not more than 200 mm. Manual heating method is invalid. For a more complete removal of residual stresses, the annealing products of stabilized chromium-Nickel steels is performed according to the mode: heating up to 870-900 °C; exposure of 2-3 h, cooling with the furnace to 300 °C (cooling rate of 50-100 °C/h), then by air. The annealing is carried out for products and welded joints of steel, from which the ratio of titanium to carbon 5 or more of niobium to carbon greater than 8. Step processing is to: a) relieve residual stresses and prevent the tendency to intergranular corrosion; b) to prevent the tendency to intergranular corrosion of welded joints of complex configuration with sharp transitions in thickness; C) products with the tendency to intergranular corrosion, remove which other method (annealing or stabilizing annealing) is inappropriate. Step treatment should be carried out according to mode: heating to 1050-1100 °C; the holding time at the heating for hardening to products with a wall thickness up to 10 mm - 30 min, over 10 mm - 20 min + 1 min per 1 mm of maximum thickness; cooling as fast as possible to 870-900°C; holding at 870-900 °C for 2-3 hours; cooling with the furnace to 300 °C (speed of 50-100 °C/h), then by air. To expedite the process, step-by-step treatment is recommended in two in two furnaces heated to different temperatures. When transferring from one furnace to another, the temperature of the products should not be below 900 °C. Speed of processing permitted for products and welded joints of steel, from which the ratio of titanium to carbon 5 or more of niobium to carbon greater than 8.

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