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Description

China CNS SN400C China Taiwan Structural steel and SN400C Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Structure Steel: SN400C
Category Type Steel Grade Standard Country Application
Steel GradesStructure Steel SN400C CNS China China Taiwan Structural steel
SMA490CW
SMA490AP
SMA490BP
SMA490CP
SMA570W
SMA570P
SPA-H
SPA-C
SN400A
SN400B

Chemical composition(mass fraction)(wt.%) of the SN400C

C(%) Si(%) Mn(%) P(%) S(%) Other(%)
0.20 0.35 0.60-1.40 0.02 0.008 CE Max 0.36

Mechanical Properties of steel grade SN400C

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)
384 (≥) 354 (≥) 42 31 14 Solution and Aging, Annealing, Ausaging, Q+T,etc 424

Physical Properties of steel grade SN400C

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 - -     0.22 -  
781 219 - 33.3 142   -  
766 - 34 22.2   331 231

Heat Treatment of steel grade SN400C

Heat treated : 1658°C - 1225°C

Technological Curves of steel grade SN400C

Cross Reference Table (Equivalent Grade) of SN400C

Grade Standard Country Application
SN400C CNS China China Taiwan Structural steel

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