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China 鞍钢Q/ASB H240LA 汽车用高强度冷连轧钢板和钢带 第4部分:高强度低合金钢 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: H240LA / H240LA
Category Grade Standard Region/Area Standard Content
Metals H240LA Q/ASB 89.4 China 汽车用高强度冷连轧钢板和钢带 第4部分:高强度低合金钢

Chemical composition(mass fraction)(wt.%) of the H240LA

Element Min Max Similar
Ti+Nb+V+B - 0.2200 -
Ti - 0.0800 -
Nb - 0.0800 -
Al 0.0150 - -
S - 0.0250 -
P - 0.0250 -
Mn - 0.6000 -
Si - 0.5000 -
C - 0.1000 -

Mechanical Properties of steel grade H240LA

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)
752 (≥) 722 (≥) 24 31 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 211

Physical Properties of steel grade H240LA

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 - -     0.43 -  
381 434 - 21.3 143   -  
517 - 23 33.2   133 344

Heat Treatment of steel grade H240LA

Heat treated : 1123°C - 1736°C

Technological Curves of steel grade H240LA

Cross Reference Table (Equivalent Grade) of H240LA

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