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A470 Class 8

America ASTM A470Class8 涡轮机转子和轴用经真空处理的碳素钢和合金锻件 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: A470Class8 / A470 Class 8
Category Grade Standard Region/Area Standard Content
Metals A470 Class 8 ASTM A470/A470M America 涡轮机转子和轴用经真空处理的碳素钢和合金锻件

Chemical composition(mass fraction)(wt.%) of the A470 Class 8

Element Min Max Similar

Mechanical Properties of steel grade A470 Class 8

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)
862 (≥) 352 (≥) 31 34 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 313

Physical Properties of steel grade A470 Class 8

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 - -     0.22 -  
935 881 - 41.3 433   -  
439 - 14 33.2   243 421

Heat Treatment of steel grade A470 Class 8

Heat treated : 1844°C - 1521°C

Technological Curves of steel grade A470 Class 8

Cross Reference Table (Equivalent Grade) of A470 Class 8

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