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Brazil NBR CG250 Heavy-thickness coils and plates of carbon steel for structural use - Specification and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: CG250 / CG250
Category Grade Standard Region/Area Standard Content
Metals CG250 ABNT NBR 6648 Brazil Heavy-thickness coils and plates of carbon steel for structural use - Specification

Chemical composition(mass fraction)(wt.%) of the CG250

Element Min Max Similar
C - 0.2500 -
Mn - 1.2000 -
P - 0.0350 -
S - 0.0300 -
Si - 0.4000 -
Al 0.0100 - -

Mechanical Properties of steel grade CG250

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)
836 (≥) 611 (≥) 14 34 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 224

Physical Properties of steel grade CG250

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
44 - -     0.22 -  
181 666 - 14.3 343   -  
345 - 24 21.2   344 243

Heat Treatment of steel grade CG250

Heat treated : 1125°C - 1463°C

Technological Curves of steel grade CG250

Cross Reference Table (Equivalent Grade) of CG250

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