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Global 企业标准 B30M and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: B30M / B30M
Category Grade Standard Region/Area Standard Content
Metals B30M -- Global

Chemical composition(mass fraction)(wt.%) of the B30M

Element Min Max Similar
Si 0.2000 0.8000 -
S - 0.0300 -
P - 0.0300 -
Mo 0.3000 0.5500 -
Mn 0.6000 1.0000 -
Cr 1.4000 2.0000 -
C 0.2800 0.4000 -

Mechanical Properties of steel grade B30M

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)
414 (≥) 955 (≥) 13 14 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 421

Physical Properties of steel grade B30M

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 - -     0.13 -  
195 398 - 43.3 212   -  
388 - 14 13.2   332 441

Heat Treatment of steel grade B30M

Heat treated : 1369°C - 1182°C

Technological Curves of steel grade B30M

Cross Reference Table (Equivalent Grade) of B30M

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