Metals -> Corrosion-resistant (stainless) steel -> Corrosion-resistant high-temperature steel Characteristics of the material 12KH18N9T ( 12H18N9T, 12Х18Н9Т ).
Material : 12KH18N9T ( 12H18N9T, 12Х18Н9Т ) Substitute: 10Х14Г14Н4Т, 12Х17Г9АН4, 12Х18Н10Т Classification : Corrosion-resistant high-temperature steel
Chemical composition in % of the material 12KH18N9T ( 12H18N9T, 12Х18Н9Т ) . C Si Mn Ni S P Cr Cu - max 0.12 max 0.8 max 2 8 - 9.5 max 0.02 max 0.035 17 - 19 max 0.3 (5 С - 0.8) Ti, остальное Fe
Mechanical properties under Т=20o С of the material 12KH18N9T ( 12H18N9T, 12Х18Н9Т ) .
Assortment Dimension Direct. s в s T
d 5
y KCU Heat treatment - mm - MPa MPa % % kJ / m2 - Forging to 1000 510 216 35 40 Guenching 1050 - 1100o C, Bars to 60 540 196 40 55 Guenching 1020 - 1100o C,Cooling air, Sheet trick 530 215 38 Guenching 1030 - 1080o C,Cooling water,
Brinell hardness of the material 12KH18N9T ( 12H18N9T, 12Х18Н9Т ) , Forging HB 10 -1 = 170 MPa
Physical properties of the material 12KH18N9T ( 12H18N9T, 12Х18Н9Т ) . 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 1.95 7900 725 100 1.89 16.6 16 7860 469 792 200 1.82 17 18 7820 486 861 300 1.75 17.6 20 7780 498 920 400 1.67 18 21 7740 511 976 500 18.3 23 7690 519 1028 600 1.53 18.6 25 7650 528 1075 700 1.43 18.9 26 7600 532 1117 800 1.35 19.3 28 7560 544 1149 900 19.5 29 7510 548 1176 1000 20.1 T E 10- 5 a 10 6 l r C R 10 9
Technological properties of the material 12KH18N9T ( 12H18N9T, 12Х18Н9Т ) . Weldability: without limitations.
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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