Metals -> Corrosion-resistant (stainless) steel -> Corrosion-resistant high-temperature steel Characteristics of the material 12KH18N12T ( 12H18N12T, 12Х18Н12Т ).
Material : 12KH18N12T ( 12H18N12T, 12Х18Н12Т ) Substitute: 12Х18Н9, 12Х18Н9Т, 12Х18Н10Т Classification : Corrosion-resistant high-temperature steel
Chemical composition in % of the material 12KH18N12T ( 12H18N12T, 12Х18Н12Т ) . C Si Mn Ni S P Cr Cu - max 0.12 max 0.8 max 2 11 - 13 max 0.02 max 0.035 17 - 19 max 0.3 (5 С - 0.7) Ti, остальное Fe
Mechanical properties under Т=20o С of the material 12KH18N12T ( 12H18N12T, 12Х18Н12Т ) .
Assortment Dimension Direct. s в s T
d 5
y KCU Heat treatment - mm - MPa MPa % % kJ / m2 - Bars longitudinal 550 200 40 55 Heating 1050 - 1100o C,Cooling water, Pipe hotrolled longitudinal 540 40 Heating 1050 - 1100o C,Cooling water, Pipe longitudinal 540 220 35 55 Heating 1050 - 1100o C,Cooling water, Sheet trick 530 235 38 Guenching 1030 - 1080o C,Cooling water,
Physical properties of the material 12KH18N12T ( 12H18N12T, 12Х18Н12Т ) . T E 10- 5 a 10 6 l r C R 10 9 Grade MPa 1/Grade Watt/(m·Grade) kg/m3 J/(kg·Grade) Ohm·m 20 2.05 15.1 7900 761 100 2.02 16.6 16.3 7860 460 800 200 1.97 17 17.6 7820 482 865 300 1.9 17.2 18.7 7780 507 930 400 1.81 17.5 20.4 7740 525 982 500 1.73 17.9 22.2 7690 545 1038 600 1.6 18.2 24.1 7650 563 1070 700 1.5 18.6 25.9 7600 579 1120 800 18.9 27.4 7560 590 1155 900 19.3 29.1 7510 603 1210 1000 30.8 616 1245 1100 32.3 625 1275 1200 34.1 637 1315 T E 10- 5 a 10 6 l r C R 10 9
Technological properties of the material 12KH18N12T ( 12H18N12T, 12Х18Н12Т ) . Weldability: limited weldability.
Specification :
Mechanical properties : s в - Tensile strength , [MPa] s T - Yield stress, [MPa] d 5 - Specific elongation at fracture , [ % ] y - Reduction of area , [ % ] KCU - Impact strength , [ kJ / m2 ] HB - Brinell hardness , [MPa]
Physical properties : T - Test temperature , [Grade] E - Young modulus , [MPa] a - Coefficient of linear expansion
(range 20o - T ) , [1/Grade] l - Termal (heat) condition coefficient , [Watt/(m·Grade)] r - Density , [kg/m3 ] C - Specific heat
( range 20o - T ), [J/(kg·Grade)] R - Electrical resistance , [Ohm·m]
Weldability : without limitations - welding is done without heating and subsequent heat treeting limited weldability - welding is possible under heating up to 100-120 grade and subsequent heat treeting hard weldability - obtaining the quality welding needs the additional operations:heating up to 200-300 grade; the heat treeting ia annealing
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