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Zamak 5 vs. 851.0 Aluminum

Zamak 5 belongs to the zinc alloys classification, while 851.0 aluminum belongs to the aluminum alloys. There are 26 material properties with values for both materials. Properties with values for just one material (9, 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 851.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 87
69
Elongation at Break, % 6.3
3.9 to 9.1
Poisson's Ratio 0.25
0.33
Shear Modulus, GPa 33
26
Tensile Strength: Ultimate (UTS), MPa 330
130 to 140

Thermal Properties

Latent Heat of Fusion, J/g 120
410
Maximum Temperature: Mechanical, °C 95
180
Melting Completion (Liquidus), °C 390
630
Melting Onset (Solidus), °C 380
360
Solidification (Pattern Maker's) Shrinkage, % 1.2
1.3
Specific Heat Capacity, J/kg-K 410
850
Thermal Conductivity, W/m-K 110
180
Thermal Expansion, µm/m-K 27
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 26
46
Electrical Conductivity: Equal Weight (Specific), % IACS 37
140

Otherwise Unclassified Properties

Base Metal Price, % relative 12
14
Density, g/cm3 6.4
3.1
Embodied Carbon, kg CO2/kg material 3.0
8.4
Embodied Energy, MJ/kg 57
160
Embodied Water, L/kg 380
1140

Common Calculations

Stiffness to Weight: Axial, points 7.5
13
Stiffness to Weight: Bending, points 23
45
Strength to Weight: Axial, points 14
12 to 13
Strength to Weight: Bending, points 16
19 to 20
Thermal Diffusivity, mm2/s 42
69
Thermal Shock Resistance, points 9.9
6.1 to 6.3

Alloy Composition


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Aluminum (Al), % 3.5 to 4.3
86.6 to 91.5
Cadmium (Cd), % 0 to 0.0050
0
Copper (Cu), % 0.7 to 1.3
0.7 to 1.3
Iron (Fe), % 0 to 0.1
0 to 0.7
Lead (Pb), % 0 to 0.0050
0
Magnesium (Mg), % 0.025 to 0.080
0 to 0.1
Manganese (Mn), % 0
0 to 0.1
Nickel (Ni), % 0 to 0.020
0.3 to 0.7
Silicon (Si), % 0 to 0.030
2.0 to 3.0
Tin (Sn), % 0 to 0.0030
5.5 to 7.0
Titanium (Ti), % 0
0 to 0.2
Zinc (Zn), % 94.3 to 95.7
0
Residuals, % 0
0 to 0.3