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Description

SN400B Carbon Steel and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Carbon Steel: SN400B
Category Type Steel Grade Standard Country Application
Steel GradesCarbon Steel SN400B
SCM440TK
SCr420TK
SNB5
SNB7
SNB16
SNB21-1~5
SNB22-1~5
SNB23-1~5
SNB24-1~5
SN400A

Chemical composition(mass fraction)(wt.%) of the SN400B

 

C
Si
Mn
P
S
Cr Ni
0.2-0.22 0.35 0.6-1.4 0.03 0.015    
Mo Al Cu Nb Ti V Ce
            ≤0.36
N Co Pb B Other    
        Thickness 6~100/mm    
             

Mechanical Properties of steel grade SN400B

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)
198 (≥) 961 (≥) 11 41 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 211

Physical Properties of steel grade SN400B

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
24 - -     0.41 -  
451 594 - 44.3 332   -  
235 - 22 22.2   141 122

Heat Treatment of steel grade SN400B

Heat treated : 1956°C - 1953°C

Technological Curves of steel grade SN400B

Cross Reference Table (Equivalent Grade) of SN400B

Grade Standard Country Application
SN400B China China Taiwan Structural steel

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