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China 宝钢Q/BQB B30Si2Mn 轧制方坯 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: B30Si2Mn / B30Si2Mn
Category Grade Standard Region/Area Standard Content
Metals B30Si2Mn Q/BQB 110 China 轧制方坯

Chemical composition(mass fraction)(wt.%) of the B30Si2Mn

Element Min Max Similar
Cu - 0.2000 -
S - 0.0250 -
P - 0.0250 -
Mn 0.6500 0.9500 -
Si 1.5500 1.8500 -
C 0.2700 0.3500 -
Cu - 0.2000 -
B 0.0010 0.0050 -
P - 0.0300 -
S - 0.0300 -
Mn 0.6500 0.9500 -
Si 1.5500 1.8500 -
C 0.2700 0.3500 -
Cu - 0.2000 -
P - 0.0300 -
S - 0.0300 -
Mn 0.6500 0.9500 -
Si 1.5500 1.8500 -
C 0.2700 0.3500 -

Mechanical Properties of steel grade B30Si2Mn

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)
372 (≥) 579 (≥) 33 13 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 333

Physical Properties of steel grade B30Si2Mn

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
34 - -     0.43 -  
625 512 - 14.3 344   -  
212 - 11 33.2   211 223

Heat Treatment of steel grade B30Si2Mn

Heat treated : 1425°C - 1166°C

Technological Curves of steel grade B30Si2Mn

Cross Reference Table (Equivalent Grade) of B30Si2Mn

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