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Zamak 7 vs. 6018 Aluminum

Zamak 7 belongs to the zinc alloys classification, while 6018 aluminum belongs to the aluminum alloys. There are 30 material properties with values for both materials. Properties with values for just one material (4, 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 7 and the bottom bar is 6018 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 86
69
Elongation at Break, % 13
9.0 to 9.1
Fatigue Strength, MPa 47
85 to 89
Poisson's Ratio 0.25
0.33
Shear Modulus, GPa 33
26
Shear Strength, MPa 210
170 to 180
Tensile Strength: Ultimate (UTS), MPa 280
290 to 300
Tensile Strength: Yield (Proof), MPa 250
220 to 230

Thermal Properties

Latent Heat of Fusion, J/g 120
400
Maximum Temperature: Mechanical, °C 95
160
Melting Completion (Liquidus), °C 390
640
Melting Onset (Solidus), °C 380
570
Specific Heat Capacity, J/kg-K 410
890
Thermal Conductivity, W/m-K 110
170
Thermal Expansion, µm/m-K 27
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
44
Electrical Conductivity: Equal Weight (Specific), % IACS 38
140

Otherwise Unclassified Properties

Base Metal Price, % relative 11
10
Density, g/cm3 6.4
2.9
Embodied Carbon, kg CO2/kg material 3.0
8.2
Embodied Energy, MJ/kg 57
150
Embodied Water, L/kg 380
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 36
24 to 25
Resilience: Unit (Modulus of Resilience), kJ/m3 370
360 to 380
Stiffness to Weight: Axial, points 7.5
13
Stiffness to Weight: Bending, points 23
48
Strength to Weight: Axial, points 12
28 to 29
Strength to Weight: Bending, points 15
34 to 35
Thermal Diffusivity, mm2/s 43
65
Thermal Shock Resistance, points 8.6
13

Alloy Composition

Aluminum (Al), % 3.5 to 4.3
93.1 to 97.8
Bismuth (Bi), % 0
0.4 to 0.7
Cadmium (Cd), % 0 to 0.0020
0
Chromium (Cr), % 0
0 to 0.1
Copper (Cu), % 0 to 0.25
0.15 to 0.4
Iron (Fe), % 0 to 0.075
0 to 0.7
Lead (Pb), % 0 to 0.0030
0.4 to 1.2
Magnesium (Mg), % 0.0050 to 0.020
0.6 to 1.2
Manganese (Mn), % 0
0.3 to 0.8
Nickel (Ni), % 0.0050 to 0.020
0
Silicon (Si), % 0
0.5 to 1.2
Tin (Sn), % 0 to 0.0010
0
Titanium (Ti), % 0
0 to 0.2
Zinc (Zn), % 95.3 to 96.5
0 to 0.3
Residuals, % 0
0 to 0.15