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Germany DIN 37MnB4 Low alloyed MnCrNb steel and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 37MnB4 / 37 MnB 4
Category Grade Standard Region/Area Standard Content
Metals 37 MnB 4 -- Germany Low alloyed MnCrNb steel

Chemical composition(mass fraction)(wt.%) of the 37 MnB 4

Element Min Max Similar
Cu - 0.2500 -
B 0.0008 0.0050 -
Cr - 0.3000 -
P - 0.0250 -
S - 0.0250 -
Mn 1.1500 1.4500 -
Si - 0.3000 -
C 0.3500 0.4000 -
Ti 0.0200 0.0500 -
Si - 0.4000 -
S - 0.0150 -
P - 0.0250 -
Nb 0.0008 0.0050 -
Mn 0.8000 1.1000 -
Cr 0.1500 0.3500 -
C 0.3400 0.4000 -
Al 0.0200 0.0600 -

Mechanical Properties of steel grade 37 MnB 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)
442 (≥) 482 (≥) 41 14 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 334

Physical Properties of steel grade 37 MnB 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
21 - -     0.44 -  
144 324 - 32.3 434   -  
716 - 32 11.2   414 212

Heat Treatment of steel grade 37 MnB 4

Heat treated : 1521°C - 1588°C

Technological Curves of steel grade 37 MnB 4

Cross Reference Table (Equivalent Grade) of 37 MnB 4

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