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Global 企业标准 747A and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 747A / 747A
Category Grade Standard Region/Area Standard Content
Metals 747A -- Global

Chemical composition(mass fraction)(wt.%) of the 747A

Element Min Max Similar
Ti 1.8000 3.0000 -
Si - 1.5000 -
Ni - - -
Mn - 1.0000 -
Fe - 3.0000 -
Cr 18.0000 21.0000 -
Co 15.0000 21.0000 -
C - 0.1300 -
Al 0.8000 2.0000 -

Mechanical Properties of steel grade 747A

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)
454 (≥) 827 (≥) 44 24 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 432

Physical Properties of steel grade 747A

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
33 - -     0.24 -  
273 791 - 22.3 331   -  
427 - 22 12.2   413 432

Heat Treatment of steel grade 747A

Heat treated : 1876°C - 1936°C

Technological Curves of steel grade 747A

Cross Reference Table (Equivalent Grade) of 747A

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