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A508 Grade 22 Class 7

America ASTM A508Grade22Class7 压力容器用经回火和淬火真空处理的碳素钢和合金钢锻件 and Mechanical Properties, Chemical Element, Cross Reference.

Category Grade Standard Region/Area Standard Content
Metals A508 Grade 22 Class 7 ASTM A508/A508M America 压力容器用经回火和淬火真空处理的碳素钢和合金钢锻件

Chemical composition(mass fraction)(wt.%) of the A508 Grade 22 Class 7

Element Min Max Similar

Mechanical Properties of steel grade A508 Grade 22 Class 7

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)
871 (≥) 478 (≥) 42 42 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 323

Physical Properties of steel grade A508 Grade 22 Class 7

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
42 - -     0.42 -  
224 474 - 33.3 212   -  
596 - 33 21.2   232 214

Heat Treatment of steel grade A508 Grade 22 Class 7

Heat treated : 1358°C - 1524°C

Technological Curves of steel grade A508 Grade 22 Class 7

Cross Reference Table (Equivalent Grade) of A508 Grade 22 Class 7

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