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A204 Grade B

America ASTM A204GradeB 压力容器用钼合金钢板 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: A204GradeB / A204 Grade B
Category Grade Standard Region/Area Standard Content
Metals A204 Grade B ASTM A204/A204M America 压力容器用钼合金钢板

Chemical composition(mass fraction)(wt.%) of the A204 Grade B

Element Min Max Similar
Mo 0.4500 0.6000 -
P - 0.0350 -
S - 0.0350 -
Mn - 0.9000 -
Si 0.1500 0.4000 -
C - 0.2700 -
Si 0.1300 0.4500 -
S - 0.0250 -
P - 0.0250 -
Mo 0.4100 0.6400 -
Mn - 0.9800 -
C - 0.2000 -

Mechanical Properties of steel grade A204 Grade B

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 (≥) 894 (≥) 43 43 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 311

Physical Properties of steel grade A204 Grade B

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
23 - -     0.32 -  
776 118 - 44.3 422   -  
248 - 33 42.2   131 242

Heat Treatment of steel grade A204 Grade B

Heat treated : 1753°C - 1598°C

Technological Curves of steel grade A204 Grade B

Cross Reference Table (Equivalent Grade) of A204 Grade B

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