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China 舞钢Q/WTB BB503 太钢4#高炉大修工程高炉炉壳钢板BB503技术协议 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: BB503 / BB503
Category Grade Standard Region/Area Standard Content
Metals BB503 WJX 038 China 太钢4#高炉大修工程高炉炉壳钢板BB503技术协议

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

Element Min Max Similar
V 0.0200 0.1500 -
N - 0.0070 -
Al 0.0100 0.0500 -
Ti 0.0100 0.0350 -
Nb 0.0150 0.0400 -
S - 0.0100 -
P - 0.0200 -
Mn 1.2500 1.6000 -
Si 0.3000 0.5000 -
C 0.1200 0.1800 -

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)
939 (≥) 917 (≥) 41 22 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 142

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
22 - -     0.43 -  
874 581 - 41.3 422   -  
796 - 44 42.2   423 322

Heat Treatment of steel grade BB503

Heat treated : 1415°C - 1528°C

Technological Curves of steel grade BB503

Cross Reference Table (Equivalent Grade) of BB503

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