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China 首钢Q/SG SS540 结构用热连轧钢板和钢带 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: SS540 / SS540
Category Grade Standard Region/Area Standard Content
Metals SS540 Q/SGZGS 316 China 结构用热连轧钢板和钢带

Chemical composition(mass fraction)(wt.%) of the SS540

Element Min Max Similar
C - 0.3000 -
Mn - 1.6000 -
P - 0.0400 -
S - 0.0400 -
Cu - 0.3000 -
Cr - 0.3000 -
Ni - 0.3000 -
N - 0.0080 -

Mechanical Properties of steel grade SS540

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)
647 (≥) 283 (≥) 23 41 14 Solution and Aging, Annealing, Ausaging, Q+T,etc 432

Physical Properties of steel grade SS540

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
21 - -     0.14 -  
739 664 - 21.3 134   -  
298 - 24 43.2   413 141

Heat Treatment of steel grade SS540

Heat treated : 1664°C - 1951°C

Technological Curves of steel grade SS540

Cross Reference Table (Equivalent Grade) of SS540

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