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China GB Q390FRE 耐火结构用钢板及钢带 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: Q390FRE / Q390FRE
Category Grade Standard Region/Area Standard Content
Metals Q390FRE GB/T 28415 China 耐火结构用钢板及钢带

Chemical composition(mass fraction)(wt.%) of the Q390FRE

Element Min Max Similar
V - 0.2000 -
Ti - 0.0500 -
Si - 0.5500 -
S - 0.0150 -
P - 0.0250 -
Nb - 0.1000 -
Mo - 0.9000 -
Mn - 1.6000 -
Cr - 0.7500 -
C - 0.2000 -
Al 0.0150 - -

Mechanical Properties of steel grade Q390FRE

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)
527 (≥) 145 (≥) 22 23 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 432

Physical Properties of steel grade Q390FRE

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
43 - -     0.14 -  
229 333 - 34.3 431   -  
919 - 23 34.2   113 421

Heat Treatment of steel grade Q390FRE

Heat treated : 1885°C - 1528°C

Technological Curves of steel grade Q390FRE

Cross Reference Table (Equivalent Grade) of Q390FRE

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