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China GB MGH4755 高温合金和金属间化合物高温材料的分类和牌号 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: MGH4755 / MGH4755
Category Grade Standard Region/Area Standard Content
Metals MGH4755 GB/T 14992 China 高温合金和金属间化合物高温材料的分类和牌号

Chemical composition(mass fraction)(wt.%) of the MGH4755

Element Min Max Similar
Ni - - -
Fe - 4.0000 -
Cr 25.0000 35.0000 -
C - 0.1000 -

Mechanical Properties of steel grade MGH4755

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)
652 (≥) 891 (≥) 34 34 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 413

Physical Properties of steel grade MGH4755

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
44 - -     0.33 -  
718 396 - 31.3 112   -  
183 - 11 12.2   242 434

Heat Treatment of steel grade MGH4755

Heat treated : 1273°C - 1664°C

Technological Curves of steel grade MGH4755

Cross Reference Table (Equivalent Grade) of MGH4755

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