Because of an additional 1% copper, #5 zinc alloy has higher hardness and strength than #3 but less ductility which may affect formability. #5 has an excellent castability and a better creep resistance (deformation under high temperature stress). It is also good for electroplating, surface finishing and machining.
Applications
Sports equipment, industrial parts, zippers
Typical Properties
Typical Physical Properties:
Density (g/cm3):
6.6
Melting Range (oC):
380- 386
Electrical Conductivity (% IACS):
26
Thermal Conductivity (100oC, W/m
‧
K):
108.9
Specific Heat (J/kg
‧
K):
419
Die Shrinkage (mm/mm):
0.007
Coefficient of Thermal Expansion (20-100oC, μm/m/oC):
27.4
Typical Mechanical Properties:
Ultimate Tensile Strength (MPa):
328
Impact Strength (J):
65
Elongation (%):
7
Hardness (HB):
91
Shear Strength (MPa):
262
Yield Strength (0.2%, MPa):
228
Fatigue Strength (5 x 108 cycles, MPa):
57
Compressive Yield Strength (0.1%, MPa):
600
Compliance with International Standards
RoHS, ISO 301, China GB/T 8738, Europe EN 1774, Japan JISH 2201, U.S. ASTM B240