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Zamak 5 vs. 1085 Aluminum

Zamak 5 belongs to the zinc alloys classification, while 1085 aluminum belongs to the aluminum alloys. There are 30 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is Zamak 5 and the bottom bar is 1085 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 87
68
Elongation at Break, % 6.3
4.5 to 39
Fatigue Strength, MPa 56
22 to 49
Poisson's Ratio 0.25
0.33
Shear Modulus, GPa 33
26
Shear Strength, MPa 260
48 to 79
Tensile Strength: Ultimate (UTS), MPa 330
73 to 140
Tensile Strength: Yield (Proof), MPa 240
17 to 120

Thermal Properties

Latent Heat of Fusion, J/g 120
400
Maximum Temperature: Mechanical, °C 95
170
Melting Completion (Liquidus), °C 390
640
Melting Onset (Solidus), °C 380
640
Specific Heat Capacity, J/kg-K 410
900
Thermal Conductivity, W/m-K 110
230
Thermal Expansion, µm/m-K 27
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 26
61
Electrical Conductivity: Equal Weight (Specific), % IACS 37
200

Otherwise Unclassified Properties

Base Metal Price, % relative 12
9.5
Density, g/cm3 6.4
2.7
Embodied Carbon, kg CO2/kg material 3.0
8.3
Embodied Energy, MJ/kg 57
160
Embodied Water, L/kg 380
1200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 19
4.8 to 21
Resilience: Unit (Modulus of Resilience), kJ/m3 330
2.1 to 110
Stiffness to Weight: Axial, points 7.5
14
Stiffness to Weight: Bending, points 23
50
Strength to Weight: Axial, points 14
7.5 to 14
Strength to Weight: Bending, points 16
14 to 22
Thermal Diffusivity, mm2/s 42
94
Thermal Shock Resistance, points 9.9
3.3 to 6.1

Alloy Composition


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Aluminum (Al), % 3.5 to 4.3
99.85 to 100
Cadmium (Cd), % 0 to 0.0050
0
Copper (Cu), % 0.7 to 1.3
0 to 0.030
Gallium (Ga), % 0
0 to 0.030
Iron (Fe), % 0 to 0.1
0 to 0.12
Lead (Pb), % 0 to 0.0050
0
Magnesium (Mg), % 0.025 to 0.080
0 to 0.020
Manganese (Mn), % 0
0 to 0.020
Nickel (Ni), % 0 to 0.020
0
Silicon (Si), % 0 to 0.030
0 to 0.1
Tin (Sn), % 0 to 0.0030
0
Titanium (Ti), % 0
0 to 0.020
Vanadium (V), % 0
0 to 0.050
Zinc (Zn), % 94.3 to 95.7
0 to 0.030
Residuals, % 0
0 to 0.010