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Description

SCM440 Carbon Steel and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Carbon Steel: SCM440
Category Type Steel Grade Standard Country Application
Steel GradesCarbon Steel SCM440
SCr440
SCr445
SCM415
SCM418
SCM420
SCM421
SCM425
SCM430
SCM432
SCM435

Chemical composition(mass fraction)(wt.%) of the SCM440

 

 

C
Si
Mn
P
S
Cr Ni
0.38-0.43 0.15-0.35 0.3-0.6 0.03 0.03 0.9-1.2 ≤0.25
Mo Al Cu Nb Ti V Ce
0.15-0.3   ≤0.3        
N Co Pb B Other    
             
             

Mechanical Properties of steel grade SCM440

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)
593 (≥) 645 (≥) 23 24 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 212

Physical Properties of steel grade SCM440

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
34 - -     0.44 -  
144 248 - 21.3 222   -  
698 - 43 42.2   323 312

Heat Treatment of steel grade SCM440

Heat treated : 1225°C - 1951°C

Technological Curves of steel grade SCM440

Cross Reference Table (Equivalent Grade) of SCM440

Grade Standard Country Application
SCM440H China China Taiwan Structural steel
SCM440 China China Taiwan Structural steel

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