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Zamak 5 vs. 771.0 Aluminum

Zamak 5 belongs to the zinc alloys classification, while 771.0 aluminum belongs to the aluminum alloys. There are 31 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 5 and the bottom bar is 771.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 92
85 to 120
Elastic (Young's, Tensile) Modulus, GPa 87
70
Elongation at Break, % 6.3
1.7 to 6.5
Fatigue Strength, MPa 56
92 to 180
Poisson's Ratio 0.25
0.32
Shear Modulus, GPa 33
26
Tensile Strength: Ultimate (UTS), MPa 330
250 to 370
Tensile Strength: Yield (Proof), MPa 240
210 to 350

Thermal Properties

Latent Heat of Fusion, J/g 120
380
Maximum Temperature: Mechanical, °C 95
180
Melting Completion (Liquidus), °C 390
630
Melting Onset (Solidus), °C 380
620
Solidification (Pattern Maker's) Shrinkage, % 1.2
1.6
Specific Heat Capacity, J/kg-K 410
870
Thermal Conductivity, W/m-K 110
140 to 150
Thermal Expansion, µm/m-K 27
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 26
27
Electrical Conductivity: Equal Weight (Specific), % IACS 37
82

Otherwise Unclassified Properties

Base Metal Price, % relative 12
9.5
Density, g/cm3 6.4
3.0
Embodied Carbon, kg CO2/kg material 3.0
8.0
Embodied Energy, MJ/kg 57
150
Embodied Water, L/kg 380
1130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 19
4.4 to 20
Resilience: Unit (Modulus of Resilience), kJ/m3 330
310 to 900
Stiffness to Weight: Axial, points 7.5
13
Stiffness to Weight: Bending, points 23
46
Strength to Weight: Axial, points 14
23 to 35
Strength to Weight: Bending, points 16
29 to 39
Thermal Diffusivity, mm2/s 42
54 to 58
Thermal Shock Resistance, points 9.9
11 to 16

Alloy Composition

Aluminum (Al), % 3.5 to 4.3
90.5 to 92.5
Cadmium (Cd), % 0 to 0.0050
0
Chromium (Cr), % 0
0.060 to 0.2
Copper (Cu), % 0.7 to 1.3
0 to 0.1
Iron (Fe), % 0 to 0.1
0 to 0.15
Lead (Pb), % 0 to 0.0050
0
Magnesium (Mg), % 0.025 to 0.080
0.8 to 1.0
Manganese (Mn), % 0
0 to 0.1
Nickel (Ni), % 0 to 0.020
0
Silicon (Si), % 0 to 0.030
0 to 0.15
Tin (Sn), % 0 to 0.0030
0
Titanium (Ti), % 0
0.1 to 0.2
Zinc (Zn), % 94.3 to 95.7
6.5 to 7.5
Residuals, % 0
0 to 0.15