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20 MnCr 6-4

Germany DIN 20MnCr6-4 Weldable high strength low alloyed MnCr steel and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 20MnCr6-4 / 20 MnCr 6-4
Category Grade Standard Region/Area Standard Content
Metals 20 MnCr 6-4 -- Germany Weldable high strength low alloyed MnCr steel

Chemical composition(mass fraction)(wt.%) of the 20 MnCr 6-4

Element Min Max Similar

Mechanical Properties of steel grade 20 MnCr 6-4

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)
815 (≥) 977 (≥) 33 34 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 232

Physical Properties of steel grade 20 MnCr 6-4

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
41 - -     0.11 -  
738 954 - 12.3 122   -  
878 - 12 14.2   244 111

Heat Treatment of steel grade 20 MnCr 6-4

Heat treated : 1735°C - 1185°C

Technological Curves of steel grade 20 MnCr 6-4

Cross Reference Table (Equivalent Grade) of 20 MnCr 6-4

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