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Zamak 5 vs. 6261 Aluminum

Zamak 5 belongs to the zinc alloys classification, while 6261 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 6261 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 87
69
Elongation at Break, % 6.3
9.0 to 16
Fatigue Strength, MPa 56
60 to 120
Poisson's Ratio 0.25
0.33
Shear Modulus, GPa 33
26
Shear Strength, MPa 260
90 to 180
Tensile Strength: Ultimate (UTS), MPa 330
150 to 300
Tensile Strength: Yield (Proof), MPa 240
100 to 260

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
610
Specific Heat Capacity, J/kg-K 410
900
Thermal Conductivity, W/m-K 110
180
Thermal Expansion, µm/m-K 27
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 26
48
Electrical Conductivity: Equal Weight (Specific), % IACS 37
160

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
150
Embodied Water, L/kg 380
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 19
21 to 27
Resilience: Unit (Modulus of Resilience), kJ/m3 330
77 to 500
Stiffness to Weight: Axial, points 7.5
14
Stiffness to Weight: Bending, points 23
50
Strength to Weight: Axial, points 14
15 to 31
Strength to Weight: Bending, points 16
23 to 37
Thermal Diffusivity, mm2/s 42
75
Thermal Shock Resistance, points 9.9
6.5 to 13

Alloy Composition


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Aluminum (Al), % 3.5 to 4.3
96.6 to 98.6
Cadmium (Cd), % 0 to 0.0050
0
Chromium (Cr), % 0
0 to 0.1
Copper (Cu), % 0.7 to 1.3
0.15 to 0.4
Iron (Fe), % 0 to 0.1
0 to 0.4
Lead (Pb), % 0 to 0.0050
0
Magnesium (Mg), % 0.025 to 0.080
0.7 to 1.0
Manganese (Mn), % 0
0.2 to 0.35
Nickel (Ni), % 0 to 0.020
0
Silicon (Si), % 0 to 0.030
0.4 to 0.7
Tin (Sn), % 0 to 0.0030
0
Titanium (Ti), % 0
0 to 0.1
Zinc (Zn), % 94.3 to 95.7
0 to 0.2
Residuals, % 0
0 to 0.15