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Description

42Cr4 Carbon Steel and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Carbon Steel: 42Cr4
Category Type Steel Grade Standard Country Application
Steel GradesCarbon Steel 42Cr4
C70G
1.1249
40Mn4
1.1157
37MnSi5
1.5122
45Cr2
1.7005
38Cr4
1.7043

Chemical composition(mass fraction)(wt.%) of the 42Cr4

C
Si
Mn
P
S
Cr Ni
0.38-0.44  0.15-0.40  0.50-0.80  0.025  0.035  0.90-1.20   
Mo Al Cu Nb Ti V Ce
             
N Co Pb B Other    
             
             

Mechanical Properties of steel grade 42Cr4

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)
749 (≥) 541 (≥) 32 32 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 241

Physical Properties of steel grade 42Cr4

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
14 - -     0.32 -  
437 772 - 23.3 333   -  
427 - 22 33.2   324 131

Heat Treatment of steel grade 42Cr4

Heat treated : 1847°C - 1196°C

Technological Curves of steel grade 42Cr4


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