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A540 Grade B22 Class 5

America ASTM A540GradeB22Class5 特殊用途的合金钢螺栓材料 and Mechanical Properties, Chemical Element, Cross Reference.

Category Grade Standard Region/Area Standard Content
Metals A540 Grade B22 Class 5 ASTM A540/A540M America 特殊用途的合金钢螺栓材料

Chemical composition(mass fraction)(wt.%) of the A540 Grade B22 Class 5

Element Min Max Similar
Si 0.1500 0.3500 -
S - 0.0250 -
P - 0.0250 -
Mo 0.1500 0.2500 -
Mn 0.6500 1.1000 -
Cr 0.7500 1.2000 -
C 0.3900 0.4600 -

Mechanical Properties of steel grade A540 Grade B22 Class 5

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)
726 (≥) 136 (≥) 21 41 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 141

Physical Properties of steel grade A540 Grade B22 Class 5

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 - -     0.14 -  
213 812 - 42.3 344   -  
679 - 31 42.2   411 312

Heat Treatment of steel grade A540 Grade B22 Class 5

Heat treated : 1962°C - 1952°C

Technological Curves of steel grade A540 Grade B22 Class 5

Cross Reference Table (Equivalent Grade) of A540 Grade B22 Class 5

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