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Commercially Pure Zinc vs. Zamak 5

Both commercially pure zinc and Zamak 5 are zinc alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have a very high 95% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is commercially pure zinc and the bottom bar is Zamak 5.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 87
87
Elongation at Break, % 38
6.3
Poisson's Ratio 0.25
0.25
Shear Modulus, GPa 35
33
Tensile Strength: Ultimate (UTS), MPa 97
330
Tensile Strength: Yield (Proof), MPa 79
240

Thermal Properties

Latent Heat of Fusion, J/g 110
120
Maximum Temperature: Mechanical, °C 90
95
Melting Completion (Liquidus), °C 410
390
Melting Onset (Solidus), °C 400
380
Specific Heat Capacity, J/kg-K 390
410
Thermal Conductivity, W/m-K 110
110
Thermal Expansion, µm/m-K 26
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
26
Electrical Conductivity: Equal Weight (Specific), % IACS 37
37

Otherwise Unclassified Properties

Base Metal Price, % relative 11
12
Density, g/cm3 6.6
6.4
Embodied Carbon, kg CO2/kg material 2.8
3.0
Embodied Energy, MJ/kg 53
57
Embodied Water, L/kg 340
380

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 34
19
Resilience: Unit (Modulus of Resilience), kJ/m3 36
330
Stiffness to Weight: Axial, points 7.4
7.5
Stiffness to Weight: Bending, points 23
23
Strength to Weight: Axial, points 4.1
14
Strength to Weight: Bending, points 7.1
16
Thermal Diffusivity, mm2/s 44
42
Thermal Shock Resistance, points 3.0
9.9

Alloy Composition

Aluminum (Al), % 0 to 0.010
3.5 to 4.3
Cadmium (Cd), % 0 to 0.010
0 to 0.0050
Copper (Cu), % 0 to 0.080
0.7 to 1.3
Iron (Fe), % 0 to 0.020
0 to 0.1
Lead (Pb), % 0 to 0.030
0 to 0.0050
Magnesium (Mg), % 0
0.025 to 0.080
Nickel (Ni), % 0
0 to 0.020
Silicon (Si), % 0
0 to 0.030
Tin (Sn), % 0 to 0.0030
0 to 0.0030
Titanium (Ti), % 0 to 0.020
0
Zinc (Zn), % 99.827 to 100
94.3 to 95.7