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China 宝钢Q/BQB CK45 轧制圆管坯 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: CK45 / CK45
Category Grade Standard Region/Area Standard Content
Metals CK45 Q/BQB 150 China 轧制圆管坯

Chemical composition(mass fraction)(wt.%) of the CK45

Element Min Max Similar
Cu - 0.2000 -
Ni - 0.2500 -
Cr - 0.2500 -
P - 0.0250 -
S - 0.0200 -
Mn 0.5000 0.8000 -
Si 0.1700 0.3700 -
C 0.4200 0.5000 -

Mechanical Properties of steel grade CK45

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)
523 (≥) 731 (≥) 21 43 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 313

Physical Properties of steel grade CK45

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
42 - -     0.34 -  
187 483 - 44.3 131   -  
568 - 13 23.2   434 112

Heat Treatment of steel grade CK45

Heat treated : 1246°C - 1396°C

Technological Curves of steel grade CK45

Cross Reference Table (Equivalent Grade) of CK45

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