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China 宝钢Q/BQB B490HP 焊接气瓶用热连轧钢板及钢带 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: B490HP / B490HP
Category Grade Standard Region/Area Standard Content
Metals B490HP Q/BQB 321 China 焊接气瓶用热连轧钢板及钢带

Chemical composition(mass fraction)(wt.%) of the B490HP

Element Min Max Similar
Ti - 0.2000 -
Nb - 0.0600 -
V - 0.1200 -
P - 0.0300 -
S - 0.0300 -
Mn - 1.5000 -
Si - 0.2000 -
C - 0.2000 -

Mechanical Properties of steel grade B490HP

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)
542 (≥) 247 (≥) 31 32 14 Solution and Aging, Annealing, Ausaging, Q+T,etc 122

Physical Properties of steel grade B490HP

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
14 - -     0.24 -  
348 718 - 34.3 343   -  
878 - 33 33.2   422 422

Heat Treatment of steel grade B490HP

Heat treated : 1119°C - 1381°C

Technological Curves of steel grade B490HP

Cross Reference Table (Equivalent Grade) of B490HP

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