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China YB Q550CF Low welding crack susceptibility high strength steel plates and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: Q550CF / Q550CF
Category Grade Standard Region/Area Standard Content
Metals Q550CF YB/T 4137 China Low welding crack susceptibility high strength steel plates

Chemical composition(mass fraction)(wt.%) of the Q550CF

Element Min Max Similar
C - 0.0900 -
Mn - 1.8000 -
P - 0.0250 -
S - 0.0150 -
Si - 0.5000 -
Other - - -

Mechanical Properties of steel grade Q550CF

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)
847 (≥) 325 (≥) 44 14 24 Solution and Aging, Annealing, Ausaging, Q+T,etc 331

Physical Properties of steel grade Q550CF

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
12 - -     0.24 -  
352 146 - 24.3 434   -  
725 - 22 33.2   234 114

Heat Treatment of steel grade Q550CF

Heat treated : 1654°C - 1267°C

Technological Curves of steel grade Q550CF

Cross Reference Table (Equivalent Grade) of Q550CF

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