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China 宝钢Q/BQB SMA400BW 焊接结构用耐大气腐蚀厚钢板 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: SMA400BW / SMA400BW
Category Grade Standard Region/Area Standard Content
Metals SMA400BW Q/BQB 614 China 焊接结构用耐大气腐蚀厚钢板

Chemical composition(mass fraction)(wt.%) of the SMA400BW

Element Min Max Similar
Cu 0.3000 0.5000 -
Ni 0.0500 0.3000 -
Cr 0.4500 0.7500 -
P - 0.0350 -
S - 0.0350 -
Mn - 1.2500 -
Si 0.1500 0.6500 -
C - 0.1800 -

Mechanical Properties of steel grade SMA400BW

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)
341 (≥) 173 (≥) 32 33 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 343

Physical Properties of steel grade SMA400BW

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
23 - -     0.43 -  
284 859 - 43.3 123   -  
684 - 24 32.2   142 414

Heat Treatment of steel grade SMA400BW

Heat treated : 1762°C - 1662°C

Technological Curves of steel grade SMA400BW

Cross Reference Table (Equivalent Grade) of SMA400BW

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