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8 MnCrB 3

Germany DIN 8MnCrB3 Alloyed CrMn steel for cementation and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 8MnCrB3 / 8 MnCrB 3
Category Grade Standard Region/Area Standard Content
Metals 8 MnCrB 3 -- Germany Alloyed CrMn steel for cementation

Chemical composition(mass fraction)(wt.%) of the 8 MnCrB 3

Element Min Max Similar
Ti 0.0200 0.0500 -
Si 0.1500 0.4000 -
S - 0.0150 -
P - 0.0250 -
Mn 0.7000 1.0000 -
Cr 0.2500 0.5000 -
C 0.0600 0.1100 -
B 0.0008 0.0040 -
Al 0.0200 0.0600 -

Mechanical Properties of steel grade 8 MnCrB 3

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)
918 (≥) 873 (≥) 44 24 24 Solution and Aging, Annealing, Ausaging, Q+T,etc 423

Physical Properties of steel grade 8 MnCrB 3

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
12 - -     0.23 -  
215 466 - 23.3 124   -  
353 - 24 43.2   422 431

Heat Treatment of steel grade 8 MnCrB 3

Heat treated : 1124°C - 1511°C

Technological Curves of steel grade 8 MnCrB 3

Cross Reference Table (Equivalent Grade) of 8 MnCrB 3

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