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Description

China GB GB/T 14992 (2005) , GB/T 14995 (2010) , GB/T 14996 (2010) , GH3128 Specialsteel Classification and designation for superalloys and high temperature intermetallic materials and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: GH3128
Category Class Grade Standard Country Application
Steel GradesSpecialsteel GH3128 GB China Classification and designation for superalloys and high temperature intermetallic materials

Chemical composition(mass fraction)(wt.%) of the GH3128

C Cr Mo Ni W Al Ti Fe Si Mn P S B Ce Zr
≤0.05 19.0 -22.00 7.50 -9.00 ≤Remainder 7.50 -9.00 0.40 -0.80 0.40 -0.80 ≤2.0 ≤0.80 ≤0.50 ≤0.013 ≤0.013 ≤0.005 ≤0.05 ≤0.06

Mechanical Properties of steel grade GH3128

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)
499 (≥) 188 (≥) 34 23 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 422

Physical Properties of steel grade GH3128

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
21 - -     0.21 -  
964 366 - 22.3 434   -  
421 - 34 14.2   443 443

Heat Treatment of steel grade GH3128

Heat treated : 1431°C - 1818°C

Technological Curves of steel grade GH3128

Cross Reference Table (Equivalent Grade) of GH3128

Grade Standard Country Application
GH3128

Relevant standard of GH3128

GB/T 14992 (2005) Classification and designation for superalloys and high temperature intermetallic materials GB-T-14992--(2005)--.pdf
GB/T 14995 (2010) Hot-rolled superalloy sheets GB-T-14995--(2010)--.pdf
GB/T 14996 (2010) Cold-Rolled heat-resisting superalloy sheets GB-T-14996--(2010)-.pdf

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