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Description

China GBT GH4738 wrought Fe/Ni-base superalloy and GH4738 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Special Alloy: GH4738
Category Type Steel Grade Standard Country Application
Steel GradesSpecial Alloy GH4738 GBT China wrought Fe/Ni-base superalloy
GH4199
GH4202
GH4220
GH4413
GH4500
GH4586
GH4648
GH4698
GH4708
GH4710

Chemical composition(mass fraction)(wt.%) of the GH4738

C(%) Si(%) Mn(%) P(%) S(%) Cr(%) Ni(%) Mo(%) Cu(%) Co(%) B(%) Nb(%) Al(%) Ti(%) La(%) Fe(%)
0.03-0.10 0.15 0.10 0.015 0.015 18.00-21.00 Bal 3.50-5.00 0.100 12.00-15.00 0.003 -0.010 - 1.20 -1.60 2.75 -3.25 - ≤2.00

Mechanical Properties of steel grade GH4738

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)
257 (≥) 188 (≥) 43 34 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 143

Physical Properties of steel grade GH4738

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
42 - -     0.24 -  
918 432 - 42.3 242   -  
344 - 31 12.2   133 241

Heat Treatment of steel grade GH4738

Heat treated : 1867°C - 1365°C

Technological Curves of steel grade GH4738

Cross Reference Table (Equivalent Grade) of GH4738

Grade Standard Country Application
GH4738 GBT China Nickel base superalloy
GH4738 GBT China wrought Fe/Ni-base superalloy

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