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Description

China GBT GH90 wrought Fe/Ni-base superalloy and GH90 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Special Alloy: GH90
Category Type Steel Grade Standard Country Application
Steel GradesSpecial Alloy GH90 GBT China wrought Fe/Ni-base superalloy
GH128
GH170
GH536
GH600
GH625
GH652
GH33
GH37
GH49
GH80A

Chemical composition(mass fraction)(wt.%) of the GH90

C(%) Si(%) Mn(%) P(%) S(%) Cr(%) Ni(%) Cu(%) Co(%) B(%) Al(%) Ti(%) Fe(%)
≤0. 13 0.80 0.40 0.020 0.015 18.00~21_00 Bal 0.200 15.00-21.00 ≤0.020 1.00-2.00 2* 00-3.00 ≤1.50

Mechanical Properties of steel grade GH90

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)
783 (≥) 541 (≥) 11 24 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 141

Physical Properties of steel grade GH90

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
31 - -     0.31 -  
699 328 - 23.3 324   -  
788 - 22 24.2   132 234

Heat Treatment of steel grade GH90

Heat treated : 1522°C - 1689°C

Technological Curves of steel grade GH90

Cross Reference Table (Equivalent Grade) of GH90

Grade Standard Country Application
GH901 GBT China wrought Fe/Ni-base superalloy
GH903 GBT China wrought Fe/Ni-base superalloy
GH907 GBT China wrought Fe/Ni-base superalloy
GH909 GBT China wrought Fe/Ni-base superalloy
GH90 GBT China wrought Fe/Ni-base superalloy

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