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A487 Grade 7 Class A

America ASTM A487Grade7ClassA 受压钢铸件 and Mechanical Properties, Chemical Element, Cross Reference.

Category Grade Standard Region/Area Standard Content
Metals A487 Grade 7 Class A ASTM A487/A487M America 受压钢铸件

Chemical composition(mass fraction)(wt.%) of the A487 Grade 7 Class A

Element Min Max Similar
C 0.0500 0.2000 -
Mn 0.6000 1.0000 -
P - 0.0350 -
S - 0.0350 -
Si - 0.8000 -
Ni 0.7000 1.0000 -
Cr 0.4000 0.8000 -
Mo 0.4000 0.6000 -
Cu 0.1500 0.5000 -
V 0.0300 0.1000 -
W - 0.1000 -
B 0.0020 0.0060 -
Others total - 0.6000 -

Mechanical Properties of steel grade A487 Grade 7 Class A

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)
997 (≥) 413 (≥) 21 21 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 213

Physical Properties of steel grade A487 Grade 7 Class A

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
34 - -     0.23 -  
414 299 - 21.3 421   -  
881 - 13 44.2   433 142

Heat Treatment of steel grade A487 Grade 7 Class A

Heat treated : 1972°C - 1851°C

Technological Curves of steel grade A487 Grade 7 Class A

Cross Reference Table (Equivalent Grade) of A487 Grade 7 Class A

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