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SA-351 Grade CH20

America ASME SA-351GradeCH20 承压元件用奥氏体、奥氏体-铁素体(双相)铸件 and Mechanical Properties, Chemical Element, Cross Reference.

Category Grade Standard Region/Area Standard Content
Metals SA-351 Grade CH20 ASME SA-351/SA-351M America 承压元件用奥氏体、奥氏体-铁素体(双相)铸件

Chemical composition(mass fraction)(wt.%) of the SA-351 Grade CH20

Element Min Max Similar

Mechanical Properties of steel grade SA-351 Grade CH20

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)
461 (≥) 798 (≥) 42 33 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 121

Physical Properties of steel grade SA-351 Grade CH20

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
22 - -     0.12 -  
762 355 - 12.3 331   -  
259 - 24 41.2   131 221

Heat Treatment of steel grade SA-351 Grade CH20

Heat treated : 1256°C - 1296°C

Technological Curves of steel grade SA-351 Grade CH20

Cross Reference Table (Equivalent Grade) of SA-351 Grade CH20

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