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Germany DIN 12Mn8 Round Wire Rod for Welding Filler Metals; Technical Conditions of Delivery and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 12Mn8 / 12 Mn 8
Category Grade Standard Region/Area Standard Content
Metals 12 Mn 8 DIN 17145 Germany Round Wire Rod for Welding Filler Metals; Technical Conditions of Delivery

Chemical composition(mass fraction)(wt.%) of the 12 Mn 8

Element Min Max Similar
Si 0.0500 0.2500 -
S - 0.0250 -
P - 0.0250 -
Ni - 0.1500 -
Mn 1.7500 2.2500 -
Cu - 0.2000 -
Cr - 0.1500 -
C 0.0800 0.1600 -
Al - 0.0300 -

Mechanical Properties of steel grade 12 Mn 8

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)
968 (≥) 572 (≥) 22 24 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 122

Physical Properties of steel grade 12 Mn 8

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
43 - -     0.21 -  
985 457 - 41.3 331   -  
751 - 33 22.2   434 433

Heat Treatment of steel grade 12 Mn 8

Heat treated : 1926°C - 1897°C

Technological Curves of steel grade 12 Mn 8

Cross Reference Table (Equivalent Grade) of 12 Mn 8

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