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A579 Grade 71

America ASTM A579Grade71 超高强度合金钢锻件 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: A579Grade71 / A579 Grade 71
Category Grade Standard Region/Area Standard Content
Metals A579 Grade 71 ASTM A579/A579M America 超高强度合金钢锻件

Chemical composition(mass fraction)(wt.%) of the A579 Grade 71

Element Min Max Similar

Mechanical Properties of steel grade A579 Grade 71

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)
445 (≥) 879 (≥) 33 41 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 213

Physical Properties of steel grade A579 Grade 71

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 - -     0.21 -  
585 883 - 43.3 342   -  
359 - 14 23.2   332 421

Heat Treatment of steel grade A579 Grade 71

Heat treated : 1269°C - 1739°C

Technological Curves of steel grade A579 Grade 71

Cross Reference Table (Equivalent Grade) of A579 Grade 71

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