#4 zinc alloy was first found in Asia. Its copper content is between #3 and #5 zinc alloys, thus enjoying a higher strength yet similar formability as #3. #4 is more effective than #3 in reducing the soldering, or die sticking, during die casting.
Applications
Bathroom accessories, kitchenware, fashion accessories such as zippers
Typical Properties
Typical Physical Properties:
- Density (g/cm3): 6.6
- Melting Range (oC): 380-386
- Electrical Conductivity (% IACS): 26-27
- Thermal Conductivity (100oC, W/m ‧ K): 108.9-113.0
- 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): 317
- Impact Strength (J): 61
- Elongation (%): 7
- Hardness (HB): 92
- Shear Strength (MPa): 214 - 262
- Yield Strength (0.2%, MPa): 221 - 269
- Fatigue Strength (5 x 108 cycles, MPa): 48 - 57
- Compressive Yield Strength (0.1%, MPa): 414 - 600
Compliance with International Standards
Packaging
- Average Mass per Slab (kg): 10
- Slab Dimensions (mm): 480 x 110 x 45
- Average Mass per Bundle (kg): 1,100 ± 50
- Bundle Dimensions (mm): 460 x 960 x 610
- Number per Bundle: 112
