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Zamak 3 vs. EN AC-21200 Aluminum

Zamak 3 belongs to the zinc alloys classification, while EN AC-21200 aluminum belongs to the aluminum alloys. There are 30 material properties with values for both materials. Properties with values for just one material (6, 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 3 and the bottom bar is EN AC-21200 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 83
120 to 130
Elastic (Young's, Tensile) Modulus, GPa 86
71
Elongation at Break, % 11
3.9 to 6.2
Fatigue Strength, MPa 48
110 to 130
Poisson's Ratio 0.25
0.33
Shear Modulus, GPa 33
27
Tensile Strength: Ultimate (UTS), MPa 280
410 to 440
Tensile Strength: Yield (Proof), MPa 210
270 to 360

Thermal Properties

Latent Heat of Fusion, J/g 120
390
Maximum Temperature: Mechanical, °C 95
170
Melting Completion (Liquidus), °C 390
660
Melting Onset (Solidus), °C 380
550
Specific Heat Capacity, J/kg-K 410
880
Thermal Conductivity, W/m-K 110
130
Thermal Expansion, µm/m-K 27
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
34
Electrical Conductivity: Equal Weight (Specific), % IACS 38
100

Otherwise Unclassified Properties

Base Metal Price, % relative 11
10
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
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 28
16 to 22
Resilience: Unit (Modulus of Resilience), kJ/m3 260
500 to 930
Stiffness to Weight: Axial, points 7.5
13
Stiffness to Weight: Bending, points 23
46
Strength to Weight: Axial, points 12
38 to 40
Strength to Weight: Bending, points 15
41 to 43
Thermal Diffusivity, mm2/s 43
49
Thermal Shock Resistance, points 8.6
18 to 19

Alloy Composition

Aluminum (Al), % 3.5 to 4.3
93.3 to 95.7
Cadmium (Cd), % 0 to 0.0050
0
Copper (Cu), % 0 to 0.25
4.0 to 5.0
Iron (Fe), % 0 to 0.1
0 to 0.2
Lead (Pb), % 0 to 0.0050
0 to 0.030
Magnesium (Mg), % 0.020 to 0.060
0.15 to 0.5
Manganese (Mn), % 0
0.2 to 0.5
Nickel (Ni), % 0 to 0.020
0 to 0.050
Silicon (Si), % 0 to 0.030
0 to 0.1
Tin (Sn), % 0 to 0.0030
0 to 0.030
Titanium (Ti), % 0
0 to 0.1
Zinc (Zn), % 95.3 to 96.5
0 to 0.1
Residuals, % 0
0 to 0.1