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China 舞钢Q/WTB 224-490B 224-490B钢板供货技术条件及工艺要点 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 224-490B / 224-490B
Category Grade Standard Region/Area Standard Content
Metals 224-490B WYJ 403 China 224-490B钢板供货技术条件及工艺要点

Chemical composition(mass fraction)(wt.%) of the 224-490B

Element Min Max Similar
N - 0.0090 -
Ti - 0.0190 -
Mo - 0.2400 -
Cr - 0.2400 -
V - 0.0040 -
B - 0.0004 -
Ni+Cu - 0.1500 -
O - 0.0020 -
Ca - 0.0040 -
Nb - 0.0200 -
Al 0.0200 0.0440 -
S - 0.0020 -
P - 0.0140 -
Mn 0.8500 1.2000 -
Si - 0.3400 -
C - 0.2000 -

Mechanical Properties of steel grade 224-490B

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)
276 (≥) 934 (≥) 44 44 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 214

Physical Properties of steel grade 224-490B

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 - -     0.42 -  
251 834 - 41.3 422   -  
171 - 44 42.2   341 332

Heat Treatment of steel grade 224-490B

Heat treated : 1779°C - 1371°C

Technological Curves of steel grade 224-490B

Cross Reference Table (Equivalent Grade) of 224-490B

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