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Description

China GB GB/T 1221 (1992) , GB/T 8732 (2004) , 1Cr12Mo Specialsteel Heat-resisting steel bars and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: 1Cr12Mo
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel 1Cr12Mo Martensite GB China Heat-resisting steel bars

Chemical composition(mass fraction)(wt.%) of the 1Cr12Mo

C Si Mn P S Ni Cr Mo Cu
0.10 -0.15 ≤0.50 0.30 -0.50 ≤0.035 ≤0.300 0.30 -0.60 11.50 -13.00 0.30 -0.60 ≤0.30

Mechanical Properties of steel grade 1Cr12Mo

Yield
Rp0.2 (MPa)
Tensile
Rm (MPa)
Impact
KV/Ku (J)
Elongation
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
425 (≥) 388 (≥) 11 13 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 224

Physical Properties of steel grade 1Cr12Mo

Temperature
(°C)
Modulus of elasticity
(GPa)
Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Thermal conductivity
(W/m·°C)
Specific thermal capacity
(J/kg·°C)
Specific electrical resistivity
(Ω mm²/m)
Density
(kg/dm³)
Poisson’s coefficient, ν
41 - -     0.44 -  
945 474 - 42.3 232   -  
874 - 24 24.2   322 234

Heat Treatment of steel grade 1Cr12Mo

Heat treated : 1911°C - 1651°C

Technological Curves of steel grade 1Cr12Mo

Relevant standard of 1Cr12Mo

GB/T 1221 (1992) Heat-resisting steel bars GB-T-1221--(1992)--.pdf
GB/T 8732 (2004) Steels of blade for steam turbine GB-T-8732--(2004)-.pdf

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