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EN AC-21100 Aluminum vs. Zamak 7

EN AC-21100 aluminum belongs to the aluminum alloys classification, while Zamak 7 belongs to the zinc alloys. There are 30 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 EN AC-21100 aluminum and the bottom bar is Zamak 7.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 100 to 110
80
Elastic (Young's, Tensile) Modulus, GPa 71
86
Elongation at Break, % 6.2 to 7.3
13
Fatigue Strength, MPa 79 to 87
47
Poisson's Ratio 0.33
0.25
Shear Modulus, GPa 27
33
Tensile Strength: Ultimate (UTS), MPa 340 to 350
280
Tensile Strength: Yield (Proof), MPa 210 to 240
250

Thermal Properties

Latent Heat of Fusion, J/g 390
120
Maximum Temperature: Mechanical, °C 170
95
Melting Completion (Liquidus), °C 670
390
Melting Onset (Solidus), °C 550
380
Specific Heat Capacity, J/kg-K 880
410
Thermal Conductivity, W/m-K 130
110
Thermal Expansion, µm/m-K 23
27

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 11
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 1150
380

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 19 to 21
36
Resilience: Unit (Modulus of Resilience), kJ/m3 300 to 400
370
Stiffness to Weight: Axial, points 13
7.5
Stiffness to Weight: Bending, points 46
23
Strength to Weight: Axial, points 31 to 33
12
Strength to Weight: Bending, points 36 to 37
15
Thermal Diffusivity, mm2/s 48
43
Thermal Shock Resistance, points 15
8.6

Alloy Composition

Aluminum (Al), % 93.4 to 95.7
3.5 to 4.3
Cadmium (Cd), % 0
0 to 0.0020
Copper (Cu), % 4.2 to 5.2
0 to 0.25
Iron (Fe), % 0 to 0.19
0 to 0.075
Lead (Pb), % 0
0 to 0.0030
Magnesium (Mg), % 0
0.0050 to 0.020
Manganese (Mn), % 0 to 0.55
0
Nickel (Ni), % 0
0.0050 to 0.020
Silicon (Si), % 0 to 0.18
0
Tin (Sn), % 0
0 to 0.0010
Titanium (Ti), % 0.15 to 0.3
0
Zinc (Zn), % 0 to 0.070
95.3 to 96.5
Residuals, % 0 to 0.1
0