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Description

China GB GH4738 Superalloys Nickel-base superalloy and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Superalloys: GH4738
Category Class Grade Standard Country Application
Steel GradesSuperalloys GH4738 GB China Nickel-base superalloy

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

C Cr Mo Ni Co Al Ti B Fe Zr
0.03 -0.10 18.0 -21.0 3.5 -5.0 ≤Remainder 12.0 -15.0 1.2 -1.6 2.75 -3.25 0.003 -0.01 ≤2.0 0.02 -0.08

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)
593 (≥) 725 (≥) 31 34 14 Solution and Aging, Annealing, Ausaging, Q+T,etc 411

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
14 - -     0.42 -  
595 489 - 42.3 333   -  
674 - 13 31.2   311 311

Heat Treatment of steel grade GH4738

Heat treated : 1373°C - 1392°C

Technological Curves of steel grade GH4738

Cross Reference Table (Equivalent Grade) of GH4738

Grade Standard Country Application
GH4738
GH4738

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