#8 zinc alloy is commonly used for high pressure casting. It has higher strength, hardness and creep resistance (deformation under high temperature stress) than #3 and #5. #8 is suitable for electroplating and other surface treatments sharing the same process as that of #5.
Applications
Decorative parts
Typical Properties
Typical Physical Properties:
Density (g/cm3):
6.3
Melting Range (oC):
375- 404
Electrical Conductivity (% IACS):
27.7
Thermal Conductivity (100oC, W/m ‧ K):
114.7
Specific Heat (J/kg
‧
K):
435
Die Shrinkage (mm/mm):
0.007
Coefficient of Thermal Expansion (20-100oC, μm/m/oC):
23.3
Typical Mechanical Properties:
Ultimate Tensile Strength (MPa):
374
Impact Strength (J):
42
Elongation (%):
6-10
Hardness (HB):
95-110
Shear Strength (MPa):
275
Yield Strength (0.2%, MPa):
290
Fatigue Strength (5 x 108 cycles, MPa):
103
Compressive Yield Strength (0.1%, MPa):
252
Compliance with International Standards
RoHS, ISO 301, China GB/T 8738, Europe EN 1774, U.S. ASTM B240
