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712.0 Aluminum vs. Zamak 7

712.0 aluminum belongs to the aluminum alloys classification, while Zamak 7 belongs to the zinc alloys. There are 32 material properties with values for both materials. Properties with values for just one material (2, 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 712.0 aluminum and the bottom bar is Zamak 7.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 75 to 90
80
Elastic (Young's, Tensile) Modulus, GPa 70
86
Elongation at Break, % 4.5 to 4.7
13
Fatigue Strength, MPa 140 to 180
47
Poisson's Ratio 0.32
0.25
Shear Modulus, GPa 27
33
Shear Strength, MPa 180
210
Tensile Strength: Ultimate (UTS), MPa 250 to 260
280
Tensile Strength: Yield (Proof), MPa 180 to 200
250

Thermal Properties

Latent Heat of Fusion, J/g 380
120
Maximum Temperature: Mechanical, °C 190
95
Melting Completion (Liquidus), °C 640
390
Melting Onset (Solidus), °C 610
380
Solidification (Pattern Maker's) Shrinkage, % 1.6
1.2
Specific Heat Capacity, J/kg-K 870
410
Thermal Conductivity, W/m-K 160
110
Thermal Expansion, µm/m-K 24
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
27
Electrical Conductivity: Equal Weight (Specific), % IACS 120
38

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
11
Density, g/cm3 3.0
6.4
Embodied Carbon, kg CO2/kg material 8.0
3.0
Embodied Energy, MJ/kg 150
57
Embodied Water, L/kg 1140
380

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 11
36
Resilience: Unit (Modulus of Resilience), kJ/m3 240 to 270
370
Stiffness to Weight: Axial, points 13
7.5
Stiffness to Weight: Bending, points 46
23
Strength to Weight: Axial, points 24 to 25
12
Strength to Weight: Bending, points 30 to 31
15
Thermal Diffusivity, mm2/s 62
43
Thermal Shock Resistance, points 11
8.6

Alloy Composition

Aluminum (Al), % 90.7 to 94
3.5 to 4.3
Cadmium (Cd), % 0
0 to 0.0020
Chromium (Cr), % 0.4 to 0.6
0
Copper (Cu), % 0 to 0.25
0 to 0.25
Iron (Fe), % 0 to 0.5
0 to 0.075
Lead (Pb), % 0
0 to 0.0030
Magnesium (Mg), % 0.5 to 0.65
0.0050 to 0.020
Manganese (Mn), % 0 to 0.1
0
Nickel (Ni), % 0
0.0050 to 0.020
Silicon (Si), % 0 to 0.3
0
Tin (Sn), % 0
0 to 0.0010
Titanium (Ti), % 0.15 to 0.25
0
Zinc (Zn), % 5.0 to 6.5
95.3 to 96.5
Residuals, % 0 to 0.2
0