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A437 Grade B4C

America ASTM A437GradeB4C 高温用经特殊处理的涡轮型合金钢螺栓材料 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: A437GradeB4C / A437 Grade B4C
Category Grade Standard Region/Area Standard Content
Metals A437 Grade B4C ASTM A437/A437M America 高温用经特殊处理的涡轮型合金钢螺栓材料

Chemical composition(mass fraction)(wt.%) of the A437 Grade B4C

Element Min Max Similar
W 0.9000 1.2500 -
V 0.2000 0.3000 -
Ti - 0.0500 -
Sn - 0.0400 -
Si 0.2000 0.5000 -
S - 0.0250 -
P - 0.0250 -
Ni 0.5000 1.0000 -
Mo 0.9000 1.2500 -
Mn 0.5000 1.0000 -
Cr 11.0000 12.5000 -
C 0.2000 0.2500 -
Al - 0.0500 -

Mechanical Properties of steel grade A437 Grade B4C

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)
145 (≥) 295 (≥) 34 13 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 334

Physical Properties of steel grade A437 Grade B4C

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
14 - -     0.33 -  
913 567 - 44.3 323   -  
458 - 11 13.2   413 414

Heat Treatment of steel grade A437 Grade B4C

Heat treated : 1326°C - 1755°C

Technological Curves of steel grade A437 Grade B4C

Cross Reference Table (Equivalent Grade) of A437 Grade B4C

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