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Zamak 2 vs. 355.0 Aluminum

Zamak 2 belongs to the zinc alloys classification, while 355.0 aluminum belongs to the aluminum alloys. There are 32 material properties with values for both materials. Properties with values for just one material (3, 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 2 and the bottom bar is 355.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 100
72 to 83
Elastic (Young's, Tensile) Modulus, GPa 87
71
Elongation at Break, % 6.0
1.5 to 2.6
Fatigue Strength, MPa 59
55 to 70
Poisson's Ratio 0.26
0.33
Shear Modulus, GPa 33
27
Shear Strength, MPa 320
150 to 240
Tensile Strength: Ultimate (UTS), MPa 360
200 to 260
Tensile Strength: Yield (Proof), MPa 270
150 to 190

Thermal Properties

Latent Heat of Fusion, J/g 130
470
Maximum Temperature: Mechanical, °C 95
180
Melting Completion (Liquidus), °C 390
620
Melting Onset (Solidus), °C 380
560
Solidification (Pattern Maker's) Shrinkage, % 1.3
1.3
Specific Heat Capacity, J/kg-K 410
890
Thermal Conductivity, W/m-K 110
150 to 170
Thermal Expansion, µm/m-K 28
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
38 to 43
Electrical Conductivity: Equal Weight (Specific), % IACS 35
120 to 140

Otherwise Unclassified Properties

Base Metal Price, % relative 12
9.5
Density, g/cm3 6.5
2.7
Embodied Carbon, kg CO2/kg material 3.0
8.0
Embodied Energy, MJ/kg 57
150
Embodied Water, L/kg 380
1120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 20
2.7 to 5.9
Resilience: Unit (Modulus of Resilience), kJ/m3 420
150 to 250
Stiffness to Weight: Axial, points 7.5
14
Stiffness to Weight: Bending, points 23
51
Strength to Weight: Axial, points 15
20 to 27
Strength to Weight: Bending, points 17
28 to 33
Thermal Diffusivity, mm2/s 41
60 to 69
Thermal Shock Resistance, points 11
9.1 to 12

Alloy Composition

Aluminum (Al), % 3.5 to 4.3
90.3 to 94.1
Cadmium (Cd), % 0 to 0.0050
0
Chromium (Cr), % 0
0 to 0.25
Copper (Cu), % 2.5 to 3.3
1.0 to 1.5
Iron (Fe), % 0 to 0.1
0 to 0.6
Lead (Pb), % 0 to 0.0050
0
Magnesium (Mg), % 0.020 to 0.060
0.4 to 0.6
Manganese (Mn), % 0
0 to 0.5
Nickel (Ni), % 0 to 0.020
0
Silicon (Si), % 0 to 0.030
4.5 to 5.5
Tin (Sn), % 0 to 0.0030
0
Titanium (Ti), % 0
0 to 0.25
Zinc (Zn), % 92.2 to 94
0 to 0.35
Residuals, % 0
0 to 0.15