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South Africa SANS CuZn20 Wrought copper alloys Part 1: Chemical composition of copper-zinc alloys (non-leaded and leaded) and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: CuZn20 / Cu Zn 20
Category Grade Standard Region/Area Standard Content
Metals Cu Zn 20 SANS 1303-1 South Africa Wrought copper alloys Part 1: Chemical composition of copper-zinc alloys (non-leaded and leaded)

Chemical composition(mass fraction)(wt.%) of the Cu Zn 20

Element Min Max Similar
Zn - - -
Tot. other - 0.4000 -
Pb - 0.0500 -
Fe - 0.1000 -
Cu 78.5000 81.5000 -

Mechanical Properties of steel grade Cu Zn 20

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)
859 (≥) 541 (≥) 22 34 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 144

Physical Properties of steel grade Cu Zn 20

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
14 - -     0.43 -  
936 956 - 34.3 321   -  
787 - 24 14.2   413 144

Heat Treatment of steel grade Cu Zn 20

Heat treated : 1128°C - 1935°C

Technological Curves of steel grade Cu Zn 20

Cross Reference Table (Equivalent Grade) of Cu Zn 20

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