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Germany DIN 42Cr4 Flame and Induction Hardening Steels; Quality Specifications and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 42Cr4 / 42 Cr 4
Category Grade Standard Region/Area Standard Content
Metals 42 Cr 4 DIN 17212 Germany Flame and Induction Hardening Steels; Quality Specifications

Chemical composition(mass fraction)(wt.%) of the 42 Cr 4

Element Min Max Similar
Si 0.1500 0.4000 -
S - 0.0350 -
P - 0.0250 -
Mn 0.5000 0.8000 -
Cr 0.9000 1.2000 -
C 0.3800 0.4400 -

Mechanical Properties of steel grade 42 Cr 4

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)
349 (≥) 577 (≥) 14 11 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 334

Physical Properties of steel grade 42 Cr 4

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 -  
537 467 - 13.3 243   -  
142 - 33 14.2   123 244

Heat Treatment of steel grade 42 Cr 4

Heat treated : 1215°C - 1785°C

Technological Curves of steel grade 42 Cr 4

Cross Reference Table (Equivalent Grade) of 42 Cr 4

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