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Description

China GB GH1138 Superalloys Iron-based superalloy and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Superalloys: GH1138
Category Class Grade Standard Country Application
Steel GradesSuperalloys GH1138 GB China Iron-based superalloy

Chemical composition(mass fraction)(wt.%) of the GH1138

C Cr Mo Ni W Al Nb B Fe Mn Si Ce N Zr
≤0.10 18.0 -22.0 2.0 -2.6 35.0 -40.0 4.5 -5.2 ≤0.5 1.0 -1.7 ≤0.008 ≤Remainder 1.0 -2.0 ≤0.8 ≤0.05 0.10 -0.25 ≤0.05

Mechanical Properties of steel grade GH1138

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)
879 (≥) 339 (≥) 42 31 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 144

Physical Properties of steel grade GH1138

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 - -     0.41 -  
412 459 - 21.3 133   -  
831 - 14 42.2   214 431

Heat Treatment of steel grade GH1138

Heat treated : 1734°C - 1538°C

Technological Curves of steel grade GH1138

Cross Reference Table (Equivalent Grade) of GH1138

Grade Standard Country Application
GH1138
GH1138

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