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China 宝钢Q/BQB B320L 汽车结构用热连轧钢板及钢带 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: B320L / B320L
Category Grade Standard Region/Area Standard Content
Metals B320L Q/BQB 310 China 汽车结构用热连轧钢板及钢带

Chemical composition(mass fraction)(wt.%) of the B320L

Element Min Max Similar
Al 0.0100 - -
S - 0.0350 -
P - 0.0300 -
Mn - 1.5000 -
Si - 0.5000 -
C - 0.1200 -
Nb - 0.0400 -
P - 0.0300 -
S - 0.0250 -
Mn - 1.2000 -
Si - 0.5000 -
C - 0.1200 -

Mechanical Properties of steel grade B320L

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)
931 (≥) 613 (≥) 43 21 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 322

Physical Properties of steel grade B320L

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
24 - -     0.41 -  
249 276 - 11.3 232   -  
944 - 32 24.2   242 443

Heat Treatment of steel grade B320L

Heat treated : 1167°C - 1262°C

Technological Curves of steel grade B320L

Cross Reference Table (Equivalent Grade) of B320L

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