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China GB Q345FRC 耐火结构用钢板及钢带 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: Q345FRC / Q345FRC
Category Grade Standard Region/Area Standard Content
Metals Q345FRC GB/T 28415 China 耐火结构用钢板及钢带

Chemical composition(mass fraction)(wt.%) of the Q345FRC

Element Min Max Similar
V - 0.1500 -
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 Q345FRC

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)
353 (≥) 872 (≥) 13 14 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 424

Physical Properties of steel grade Q345FRC

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
33 - -     0.14 -  
867 864 - 31.3 322   -  
763 - 43 43.2   121 111

Heat Treatment of steel grade Q345FRC

Heat treated : 1776°C - 1571°C

Technological Curves of steel grade Q345FRC

Cross Reference Table (Equivalent Grade) of Q345FRC

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