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China GB MGH4754 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: MGH4754 / MGH4754
Category Grade Standard Region/Area Standard Content
Metals MGH4754 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 MGH4754

Element Min Max Similar
Ti 0.4000 0.7000 -
S - 0.0050 -
O - 0.5000 -
Ni - - -
Fe - 1.2000 -
Cr 18.5000 21.5000 -
C - 0.0500 -
Al 0.2500 0.5500 -

Mechanical Properties of steel grade MGH4754

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)
999 (≥) 538 (≥) 41 22 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 432

Physical Properties of steel grade MGH4754

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
31 - -     0.31 -  
317 699 - 43.3 123   -  
292 - 21 22.2   441 243

Heat Treatment of steel grade MGH4754

Heat treated : 1898°C - 1446°C

Technological Curves of steel grade MGH4754

Cross Reference Table (Equivalent Grade) of MGH4754

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