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China 首钢Q/SG SAPH400 汽车结构用热连轧钢板和钢带 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: SAPH400 / SAPH400
Category Grade Standard Region/Area Standard Content
Metals SAPH400 Q/SGZGS 315 China 汽车结构用热连轧钢板和钢带

Chemical composition(mass fraction)(wt.%) of the SAPH400

Element Min Max Similar
C - 0.2000 -
Si - 0.3000 -
Mn - 1.4000 -
P - 0.0250 -
S - 0.0200 -
Alt 0.0100 - -

Mechanical Properties of steel grade SAPH400

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)
864 (≥) 846 (≥) 21 32 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 112

Physical Properties of steel grade SAPH400

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 - -     0.43 -  
648 182 - 44.3 133   -  
747 - 14 33.2   323 333

Heat Treatment of steel grade SAPH400

Heat treated : 1936°C - 1321°C

Technological Curves of steel grade SAPH400

Cross Reference Table (Equivalent Grade) of SAPH400

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