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21 MnCr 6-5

Germany DIN 21MnCr6-5 Weldable high strength low alloyed MnCr steel and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 21MnCr6-5 / 21 MnCr 6-5
Category Grade Standard Region/Area Standard Content
Metals 21 MnCr 6-5 -- Germany Weldable high strength low alloyed MnCr steel

Chemical composition(mass fraction)(wt.%) of the 21 MnCr 6-5

Element Min Max Similar
V+Nb+Ti - 0.2000 -
Si - 0.7000 -
S - 0.0250 -
P - 0.0250 -
Ni - 0.6000 -
Mo - 0.3000 -
Mn - 1.9000 -
Cu - 0.6000 -
Cr 0.8000 1.6000 -
C - 0.2500 -

Mechanical Properties of steel grade 21 MnCr 6-5

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)
238 (≥) 313 (≥) 22 31 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 421

Physical Properties of steel grade 21 MnCr 6-5

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 - -     0.14 -  
756 653 - 23.3 241   -  
597 - 22 44.2   312 441

Heat Treatment of steel grade 21 MnCr 6-5

Heat treated : 1421°C - 1658°C

Technological Curves of steel grade 21 MnCr 6-5

Cross Reference Table (Equivalent Grade) of 21 MnCr 6-5

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