Metals -> Corrosion-resistant (stainless) steel -> Corrosion-resistant high-temperature steel Characteristics of the material 12KH18N9 ( 12H18N9, 12Х18Н9 ).
Material : 12KH18N9 ( 12H18N9, 12Х18Н9 ) Substitute: 20Х13Н4Г9, 12Х17Г9АН4, 10Х14Г14Н4Т Classification : Corrosion-resistant high-temperature steel
Chemical composition in % of the material 12KH18N9 ( 12H18N9, 12Х18Н9 ) . C Si Mn Ni S P Cr max 0.12 max 0.8 max 2 8 - 10 max 0.02 max 0.035 17 - 19
Mechanical properties under Т=20o С of the material 12KH18N9 ( 12H18N9, 12Х18Н9 ) .
Assortment Dimension Direct. s в s T
d 5
y KCU Heat treatment - mm - MPa MPa % % kJ / m2 - Sheet thin cold-worked 930-1230 13 Bars 60 490 196 45 55 Guenching 1050 - 1100o C,Cooling air, Sheet trick 530 215 38 Guenching 1050 - 1120o C,Cooling water, Pipe cooling strain 549 37 Pipe hot strain 529 40 Forging 490 196 35 40
Brinell hardness of the material 12KH18N9 ( 12H18N9, 12Х18Н9 ) , Forging HB 10 -1 = 179 MPa
Physical properties of the material 12KH18N9 ( 12H18N9, 12Х18Н9 ) . 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 7900 725 100 2.02 16.6 16.3 7860 504 792 200 1.97 17 17.5 7820 860 300 1.9 17.2 18.8 7780 920 400 1.81 17.5 21.3 7740 976 500 1.73 17.9 23 7690 1028 600 1.6 18.2 26.8 7650 1070 700 1.5 18.6 25.9 7600 1117 800 18.9 7560 900 19.3 T E 10- 5 a 10 6 l r C R 10 9
Technological properties of the material 12KH18N9 ( 12H18N9, 12Х18Н9 ) . 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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