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Description

SCM420H Carbon Steel and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Carbon Steel: SCM420H
Category Type Steel Grade Standard Country Application
Steel GradesCarbon Steel SCM420H
SMn443H
SMnC 420H
SMnC 443H
SCr415H
SCr420H
SCr430H
SCr435H
SCr440H
SCM415H
SCM418H

Chemical composition(mass fraction)(wt.%) of the SCM420H

 


C
Si
Mn
P
S
Cr Ni
0.17-0.23 0.15-0.35 0.55-0.9 0.03 0.03 0.85-1.25 ≤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 SCM420H

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)
356 (≥) 545 (≥) 11 13 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 113

Physical Properties of steel grade SCM420H

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 - -     0.22 -  
632 392 - 11.3 441   -  
856 - 11 13.2   134 413

Heat Treatment of steel grade SCM420H

Heat treated : 1892°C - 1757°C

Technological Curves of steel grade SCM420H

Cross Reference Table (Equivalent Grade) of SCM420H

Grade Standard Country Application
SCM420H China China Taiwan Structural steel

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