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SA-508 Class 2a

America ASME SA-508Class2a 压力容器用淬火和回火真空处理的碳素钢和合金钢锻件 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: SA-508Class2a / SA-508 Class 2a
Category Grade Standard Region/Area Standard Content
Metals SA-508 Class 2a ASME SA-508/SA-508M America 压力容器用淬火和回火真空处理的碳素钢和合金钢锻件

Chemical composition(mass fraction)(wt.%) of the SA-508 Class 2a

Element Min Max Similar

Mechanical Properties of steel grade SA-508 Class 2a

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)
751 (≥) 985 (≥) 14 44 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 321

Physical Properties of steel grade SA-508 Class 2a

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
21 - -     0.41 -  
235 227 - 14.3 411   -  
455 - 23 33.2   313 412

Heat Treatment of steel grade SA-508 Class 2a

Heat treated : 1692°C - 1387°C

Technological Curves of steel grade SA-508 Class 2a

Cross Reference Table (Equivalent Grade) of SA-508 Class 2a

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