Metals -> Structural steel -> Ñryogenic structural steel Characteristics of the material 12KH18N10T ( 12H18N10T, 12Õ18Í10Ò ).
Material : 12KH18N10T ( 12H18N10T, 12Õ18Í10Ò ) Substitute: 08Õ18Ã8Í2Ò, 10Õ14Ã14Í4Ò, 12Õ17Ã9ÀÍ4, 08Õ22Í6Ò, 08Õ17Ò, 15Õ25Ò, 12Õ18Í9Ò Classification : Ñryogenic structural steel
Chemical composition in % of the material 12KH18N10T ( 12H18N10T, 12Õ18Í10Ò ) . C Si Mn Ni S P Cr Cu - max 0.12 max 0.8 max 2 9 - 11 max 0.02 max 0.035 17 - 19 max 0.3 (5 Ñ - 0.8) Ti, îñòàëüíîå Fe
Mechanical properties under Ò=20o Ñ of the material 12KH18N10T ( 12H18N10T, 12Õ18Í10Ò ) .
Assortment Dimension Direct. s â s T
d 5
y KCU Heat treatment - mm - MPa MPa % % kJ / m2 - Forging to 1000 510 196 35 40 Guenching 1050 - 1100o C, water, Sheet thin 530 205 40 Guenching 1050 - 1080o C,Cooling water, Sheet thin cold-worked 880-1080 10 Bars to 60 510 196 40 55 Guenching 1020 - 1100o C,Cooling air, Sheet trick 530 235 38 Guenching 1000 - 1080o C,Cooling water, Pipe cooling strain 549 35 Pipe hot strain 529 40
Brinell hardness of the material 12KH18N10T ( 12H18N10T, 12Õ18Í10Ò ) , Forging HB 10 -1 = 179 MPa
Physical properties of the material 12KH18N10T ( 12H18N10T, 12Õ18Í10Ò ) . 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 1.98 15 7920 725 100 1.94 16.6 16 462 792 200 1.89 17 18 496 861 300 1.81 17.2 19 517 920 400 1.74 17.5 21 538 976 500 1.66 17.9 23 550 1028 600 1.57 18.2 25 563 1075 700 1.47 18.6 27 575 1115 800 18.9 26 596 900 19.3 T E 10- 5 a 10 6 l r C R 10 9
Technological properties of the material 12KH18N10T ( 12H18N10T, 12Õ18Í10Ò ) . Weldability: without limitations. Flakes : not predisposed
Specification :
Mechanical properties : s â - 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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