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Germany DIN SoMs71 Wrought copper alloys; copper-zinc alloys (brass); (special brass); chemical composition and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: SoMs71 / SoMs71
Category Grade Standard Region/Area Standard Content
Metals SoMs71 DIN 17660 Germany Wrought copper alloys; copper-zinc alloys (brass); (special brass); chemical composition

Chemical composition(mass fraction)(wt.%) of the SoMs71

Element Min Max Similar
Zn - - -
Total oth. - 0.1000 -
Sn 0.9000 1.3000 -
Pb - 0.0700 -
P - 0.0100 -
Ni - 0.1000 -
Mn - 0.1000 -
Fe - 0.0700 -
Cu 70.0000 72.5000 -
As 0.0200 0.0350 -
Al 1.8000 2.3000 -
Zn - - -
Total oth. - 0.1000 -
Sn 0.9000 1.3000 -
Pb - 0.0700 -
P - 0.0100 -
Ni - 0.1000 -
Mn - 0.1000 -
Fe - 0.0700 -
Cu 70.0000 72.5000 -
As 0.0200 0.0350 -
Al 1.8000 2.3000 -
Zn - - -
Total oth. - 0.1000 -
Sn 0.9000 1.3000 -
Pb - 0.0700 -
P - 0.0100 -
Ni - 0.1000 -
Mn - 0.1000 -
Fe - 0.0700 -
Cu 70.0000 72.5000 -
As 0.0200 0.0350 -
Al 1.8000 2.3000 -

Mechanical Properties of steel grade SoMs71

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)
492 (≥) 589 (≥) 14 42 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 142

Physical Properties of steel grade SoMs71

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
22 - -     0.23 -  
546 229 - 42.3 323   -  
528 - 31 12.2   124 214

Heat Treatment of steel grade SoMs71

Heat treated : 1778°C - 1842°C

Technological Curves of steel grade SoMs71

Cross Reference Table (Equivalent Grade) of SoMs71

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