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China GB Q390FRD 耐火结构用钢板及钢带 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: Q390FRD / Q390FRD
Category Grade Standard Region/Area Standard Content
Metals Q390FRD GB/T 28415 China 耐火结构用钢板及钢带

Chemical composition(mass fraction)(wt.%) of the Q390FRD

Element Min Max Similar
V - 0.2000 -
Ti - 0.0500 -
Si - 0.5500 -
S - 0.0150 -
P - 0.0200 -
Nb - 0.1000 -
Mo - 0.9000 -
Mn - 1.6000 -
Cr - 0.7500 -
C - 0.1800 -
Al 0.0150 - -

Mechanical Properties of steel grade Q390FRD

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)
479 (≥) 939 (≥) 12 43 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 232

Physical Properties of steel grade Q390FRD

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
23 - -     0.24 -  
775 951 - 23.3 233   -  
995 - 44 34.2   333 324

Heat Treatment of steel grade Q390FRD

Heat treated : 1214°C - 1591°C

Technological Curves of steel grade Q390FRD

Cross Reference Table (Equivalent Grade) of Q390FRD

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