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20 MnCr 5

Germany DIN 20MnCr5 Bright steel made from case hardening steel; technical delivery conditions and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 20MnCr5 / 20 MnCr 5
Category Grade Standard Region/Area Standard Content
Metals 20 MnCr 5 DIN 1652-3 Germany Bright steel made from case hardening steel; technical delivery conditions

Chemical composition(mass fraction)(wt.%) of the 20 MnCr 5

Element Min Max Similar
Si 0.1500 0.4000 -
S - 0.0350 -
P - 0.0350 -
Mn 1.1000 1.4000 -
Cr 1.0000 1.3000 -
C 0.1700 0.2200 -
Si - 0.4000 -
S - 0.0350 -
P - 0.0250 -
Mn 1.1000 1.4000 -
Cr 1.0000 1.3000 -
C 0.1700 0.2200 -
Si 0.1500 0.4000 -
S - 0.0350 -
P - 0.0350 -
Mn 1.1000 1.4000 -
Cr 1.0000 1.3000 -
C 0.1700 0.2200 -

Mechanical Properties of steel grade 20 MnCr 5

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)
591 (≥) 366 (≥) 34 12 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 124

Physical Properties of steel grade 20 MnCr 5

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
44 - -     0.21 -  
397 927 - 43.3 131   -  
138 - 34 41.2   243 134

Heat Treatment of steel grade 20 MnCr 5

Heat treated : 1442°C - 1449°C

Technological Curves of steel grade 20 MnCr 5

Cross Reference Table (Equivalent Grade) of 20 MnCr 5

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