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Description

China GB GH4220 Superalloys Nickel-base superalloy and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Superalloys: GH4220
Category Class Grade Standard Country Application
Steel GradesSuperalloys GH4220 GB China Nickel-base superalloy

Chemical composition(mass fraction)(wt.%) of the GH4220

C Cr Mo Ni Co W Al Ti B Fe V Mg
≤0.08 9.0 -12.0 5.0 -7.0 ≤Remainder 14.0 -15.0 5.0 -6.5 3.9 -4.8 2.2 -2.9 ≤0.02 ≤3.0 0.2 -0.8 ≤trace

Mechanical Properties of steel grade GH4220

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)
193 (≥) 683 (≥) 23 14 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 432

Physical Properties of steel grade GH4220

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 - -     0.22 -  
291 143 - 23.3 314   -  
553 - 14 43.2   113 342

Heat Treatment of steel grade GH4220

Heat treated : 1725°C - 1638°C

Technological Curves of steel grade GH4220

Cross Reference Table (Equivalent Grade) of GH4220

Grade Standard Country Application
GH4220
GH4220

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