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China HB GH648 航空用高温合金热处理工艺 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: GH648 / GH648
Category Grade Standard Region/Area Standard Content
Metals GH648 HB/Z 140 China 航空用高温合金热处理工艺

Chemical composition(mass fraction)(wt.%) of the GH648

Element Min Max Similar

Mechanical Properties of steel grade GH648

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)
574 (≥) 753 (≥) 33 11 14 Solution and Aging, Annealing, Ausaging, Q+T,etc 241

Physical Properties of steel grade GH648

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
13 - -     0.42 -  
279 259 - 22.3 142   -  
588 - 21 11.2   322 433

Heat Treatment of steel grade GH648

Heat treated : 1929°C - 1529°C

Technological Curves of steel grade GH648

Cross Reference Table (Equivalent Grade) of GH648

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