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China 宝钢Q/BQB SMA490AW 焊接结构用耐大气腐蚀厚钢板 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: SMA490AW / SMA490AW
Category Grade Standard Region/Area Standard Content
Metals SMA490AW Q/BQB 614 China 焊接结构用耐大气腐蚀厚钢板

Chemical composition(mass fraction)(wt.%) of the SMA490AW

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 - 1.4000 -
Si 0.1500 0.6500 -
C - 0.1800 -

Mechanical Properties of steel grade SMA490AW

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)
246 (≥) 158 (≥) 24 44 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 123

Physical Properties of steel grade SMA490AW

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
33 - -     0.22 -  
465 172 - 41.3 132   -  
722 - 42 32.2   333 342

Heat Treatment of steel grade SMA490AW

Heat treated : 1929°C - 1771°C

Technological Curves of steel grade SMA490AW

Cross Reference Table (Equivalent Grade) of SMA490AW

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