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China HB GH90 航空用高温合金热处理工艺 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: GH90 / GH90
Category Grade Standard Region/Area Standard Content
Metals GH90 HB/Z 140 China 航空用高温合金热处理工艺

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

Element Min Max Similar

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)
591 (≥) 298 (≥) 11 24 14 Solution and Aging, Annealing, Ausaging, Q+T,etc 234

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
22 - -     0.23 -  
698 254 - 33.3 212   -  
727 - 14 33.2   224 321

Heat Treatment of steel grade GH90

Heat treated : 1688°C - 1579°C

Technological Curves of steel grade GH90

Cross Reference Table (Equivalent Grade) of GH90

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