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China 鞍钢Q/ASB LQ590 汽车结构用热连轧钢板和钢带 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: LQ590 / LQ590
Category Grade Standard Region/Area Standard Content
Metals LQ590 Q/ASB 275 China 汽车结构用热连轧钢板和钢带

Chemical composition(mass fraction)(wt.%) of the LQ590

Element Min Max Similar
Ti - 0.0400 -
Nb - 0.0600 -
S - 0.0100 -
P - 0.0200 -
Mn - 1.7000 -
Si - 0.5000 -
C - 0.1400 -

Mechanical Properties of steel grade LQ590

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)
549 (≥) 534 (≥) 32 21 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 232

Physical Properties of steel grade LQ590

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 - -     0.33 -  
585 126 - 33.3 111   -  
243 - 41 14.2   331 234

Heat Treatment of steel grade LQ590

Heat treated : 1591°C - 1958°C

Technological Curves of steel grade LQ590

Cross Reference Table (Equivalent Grade) of LQ590

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