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China 首钢Q/SG SAPH370 汽车结构用热连轧钢板和钢带 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: SAPH370 / SAPH370
Category Grade Standard Region/Area Standard Content
Metals SAPH370 Q/SGZGS 315 China 汽车结构用热连轧钢板和钢带

Chemical composition(mass fraction)(wt.%) of the SAPH370

Element Min Max Similar
C - 0.2000 -
Si - 0.3000 -
Mn - 1.2000 -
P - 0.0250 -
S - 0.0200 -
Alt 0.0100 - -

Mechanical Properties of steel grade SAPH370

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)
623 (≥) 889 (≥) 22 23 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 442

Physical Properties of steel grade SAPH370

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
42 - -     0.24 -  
938 437 - 14.3 223   -  
721 - 24 21.2   124 144

Heat Treatment of steel grade SAPH370

Heat treated : 1956°C - 1711°C

Technological Curves of steel grade SAPH370

Cross Reference Table (Equivalent Grade) of SAPH370

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