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China 宝钢Q/BQB BB503 初轧板坯 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: BB503 / BB503
Category Grade Standard Region/Area Standard Content
Metals BB503 Q/BQB 130 China 初轧板坯

Chemical composition(mass fraction)(wt.%) of the BB503

Element Min Max Similar

Mechanical Properties of steel grade BB503

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)
793 (≥) 752 (≥) 11 42 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 333

Physical Properties of steel grade BB503

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
13 - -     0.41 -  
257 479 - 32.3 331   -  
283 - 31 21.2   232 222

Heat Treatment of steel grade BB503

Heat treated : 1944°C - 1243°C

Technological Curves of steel grade BB503

Cross Reference Table (Equivalent Grade) of BB503

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