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China YB Q325GNH 结构用高强度耐候焊接钢管 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: Q325GNH / Q325GNH
Category Grade Standard Region/Area Standard Content
Metals Q325GNH YB/T 4112 China 结构用高强度耐候焊接钢管

Chemical composition(mass fraction)(wt.%) of the Q325GNH

Element Min Max Similar
Cu 0.2000 0.5000 -
S - 0.0350 -
P 0.0600 0.1200 -
Mn 0.5000 1.0000 -
Si 0.2000 0.6000 -
C - 0.1500 -

Mechanical Properties of steel grade Q325GNH

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)
987 (≥) 369 (≥) 13 24 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 313

Physical Properties of steel grade Q325GNH

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
11 - -     0.31 -  
244 184 - 22.3 232   -  
167 - 12 41.2   134 443

Heat Treatment of steel grade Q325GNH

Heat treated : 1562°C - 1746°C

Technological Curves of steel grade Q325GNH

Cross Reference Table (Equivalent Grade) of Q325GNH

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