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Germany DIN 1.8721 Weldable high strength low alloyed MnCrNi steel and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 1.8721 / 1.8721
Category Grade Standard Region/Area Standard Content
Metals 1.8721 -- Germany Weldable high strength low alloyed MnCrNi steel

Chemical composition(mass fraction)(wt.%) of the 1.8721

Element Min Max Similar
V - 0.0800 -
Si - 0.5000 -
S - 0.0250 -
P - 0.0250 -
Ni - 0.8000 -
Nb - 0.0500 -
Mo - 0.5000 -
Mn - 1.8000 -
Cr - 1.0000 -
C - 0.3000 -
B - 0.0050 -

Mechanical Properties of steel grade 1.8721

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)
413 (≥) 158 (≥) 41 42 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 424

Physical Properties of steel grade 1.8721

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
23 - -     0.42 -  
376 552 - 22.3 243   -  
175 - 43 31.2   332 133

Heat Treatment of steel grade 1.8721

Heat treated : 1911°C - 1642°C

Technological Curves of steel grade 1.8721

Cross Reference Table (Equivalent Grade) of 1.8721

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