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China 宝钢Q/BQB A 船体结构用热连轧钢板 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: A / A
Category Grade Standard Region/Area Standard Content
Metals A Q/BQB 330 China 船体结构用热连轧钢板

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

Element Min Max Similar
Al 0.0200 - -
S - 0.0350 -
P - 0.0350 -
Si - 0.3500 -
Mn 0.8000 1.4000 -
C - 0.2100 -
V - 0.0800 -
Mo - 0.1500 -
Cr - 0.4000 -
Ni - 0.4000 -
Cu - 0.5000 -
S - 0.0300 -
P - 0.0300 -
Mn - 1.2000 -
C - 0.3000 -
Cu - 0.2000 -
Mo - 0.0800 -
Ni - 0.1500 -
Cr - 0.1500 -
P - 0.0350 -
S - 0.0350 -
Mn 0.8000 1.4000 -
Si - 0.3500 -
C - 0.2100 -

Mechanical Properties of steel grade A

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)
789 (≥) 862 (≥) 12 33 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 424

Physical Properties of steel grade A

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
41 - -     0.21 -  
431 353 - 43.3 314   -  
638 - 23 31.2   121 131

Heat Treatment of steel grade A

Heat treated : 1395°C - 1227°C

Technological Curves of steel grade A

Cross Reference Table (Equivalent Grade) of A

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