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SA-437 Grade B4D

America ASME SA-437GradeB4D 高温用特殊热处理合金钢透平用螺栓连接材料 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: SA-437GradeB4D / SA-437 Grade B4D
Category Grade Standard Region/Area Standard Content
Metals SA-437 Grade B4D ASME SA-437/SA-437M America 高温用特殊热处理合金钢透平用螺栓连接材料

Chemical composition(mass fraction)(wt.%) of the SA-437 Grade B4D

Element Min Max Similar

Mechanical Properties of steel grade SA-437 Grade B4D

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)
215 (≥) 135 (≥) 13 24 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 244

Physical Properties of steel grade SA-437 Grade B4D

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
32 - -     0.22 -  
375 284 - 32.3 112   -  
861 - 11 13.2   231 211

Heat Treatment of steel grade SA-437 Grade B4D

Heat treated : 1325°C - 1517°C

Technological Curves of steel grade SA-437 Grade B4D

Cross Reference Table (Equivalent Grade) of SA-437 Grade B4D

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