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Description

China GBT Q235NH China structural steel and alloy steel and Q235NH Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Structure Steel: Q235NH
Category Type Steel Grade Standard Country Application
Steel GradesStructure Steel Q235NH GBT China China structural steel and alloy steel
Q460
Q460
Q500
Q500
Q550
Q550
Q620
Q620
Q690
Q690

Chemical composition(mass fraction)(wt.%) of the Q235NH

C(%) Si(%) Mn(%) P(%) S(%) Cr(%) Cu(%)
Max 0.15 0.15-0.40 0.20-0.60 0.035 0.035 0.40-0.80 0.20-0.50

Mechanical Properties of steel grade Q235NH

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)
423 (≥) 263 (≥) 12 13 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 143

Physical Properties of steel grade Q235NH

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 - -     0.42 -  
353 181 - 34.3 122   -  
679 - 44 41.2   441 313

Heat Treatment of steel grade Q235NH

Heat treated : 1639°C - 1163°C

Technological Curves of steel grade Q235NH

Cross Reference Table (Equivalent Grade) of Q235NH

Grade Standard Country Application
Q235NH GBT China China structural steel and alloy steel

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