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Zamak 3 (ASTM AG40A, Z33520, Mazak 3) Zinc Alloy
Material Properties
Base Metal Price: 19 % rel
Compressive (Crushing) Strength: 420 MPa (61 x 103 psi)
Density: 6.60 g/cm3 (412 lb/ft3)
Elastic (Young's, Tensile) Modulus: 86 GPa (12 x 106 psi)
Electrical Conductivity: 27 % IACS
Elongation at Break: 10 %
Fatigue Strength (Endurance Limit): 48 MPa (7.0 x 103 psi)
Fracture Toughness: 12 MPa-m1/2
Melting Onset (Solidus): 381 °C (720 °F)
Shear Modulus: 33 GPa (4.8 106 psi)
Shear Strength: 210 MPa (30 x 103 psi)
Specific Heat Capacity: 420 J/kg-K
Strength to Weight Ratio: 42 to 44 kN-m/kg
Tensile Strength: Ultimate (UTS): 290 MPa (42 x 103 psi)
Tensile Strength: Yield (Proof): 220 MPa (32 x 103 psi)
Thermal Conductivity: 110 W/m-K
Thermal Diffusivity: 40
Thermal Expansion: 27.4 µm/m-K
Alloy Composition
Zinc (Zn): 95.3 to 96.5 %
Aluminum (Al): 3.5 to 4.3 %
Copper (Cu): 0 to 0.25 %
Iron (Fe): 0 to 0.1 %
Magnesium (Mg): 0.02 to 0.05 %
Lead (Pb): 0 to 0.005 %
Cadmium (Cd): 0 to 0.004 %
Tin (Sn): 0 to 0.003 %
See Also
ASTM B 86: Standard Specification for Zinc and Zinc-Aluminum (ZA) Alloy Foundry and Die Castings
Properties and Selection: Nonferrous Alloys and Special-Purpose Materials, ASM Handbook vol. 2, ASM International, 1993