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7049 Aluminum vs. Zamak 7

7049 aluminum belongs to the aluminum alloys classification, while Zamak 7 belongs to the zinc alloys. There are 31 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 7049 aluminum and the bottom bar is Zamak 7.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
80
Elastic (Young's, Tensile) Modulus, GPa 70
86
Elongation at Break, % 6.2 to 7.0
13
Fatigue Strength, MPa 160 to 170
47
Poisson's Ratio 0.32
0.25
Shear Modulus, GPa 27
33
Shear Strength, MPa 300 to 310
210
Tensile Strength: Ultimate (UTS), MPa 510 to 530
280
Tensile Strength: Yield (Proof), MPa 420 to 450
250

Thermal Properties

Latent Heat of Fusion, J/g 370
120
Maximum Temperature: Mechanical, °C 180
95
Melting Completion (Liquidus), °C 640
390
Melting Onset (Solidus), °C 480
380
Specific Heat Capacity, J/kg-K 860
410
Thermal Conductivity, W/m-K 130
110
Thermal Expansion, µm/m-K 23
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 36
27
Electrical Conductivity: Equal Weight (Specific), % IACS 110
38

Otherwise Unclassified Properties

Base Metal Price, % relative 10
11
Density, g/cm3 3.1
6.4
Embodied Carbon, kg CO2/kg material 8.1
3.0
Embodied Energy, MJ/kg 140
57
Embodied Water, L/kg 1110
380

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 31 to 34
36
Resilience: Unit (Modulus of Resilience), kJ/m3 1270 to 1440
370
Stiffness to Weight: Axial, points 13
7.5
Stiffness to Weight: Bending, points 45
23
Strength to Weight: Axial, points 46 to 47
12
Strength to Weight: Bending, points 46 to 47
15
Thermal Diffusivity, mm2/s 51
43
Thermal Shock Resistance, points 22 to 23
8.6

Alloy Composition

Aluminum (Al), % 85.7 to 89.5
3.5 to 4.3
Cadmium (Cd), % 0
0 to 0.0020
Chromium (Cr), % 0.1 to 0.22
0
Copper (Cu), % 1.2 to 1.9
0 to 0.25
Iron (Fe), % 0 to 0.35
0 to 0.075
Lead (Pb), % 0
0 to 0.0030
Magnesium (Mg), % 2.0 to 2.9
0.0050 to 0.020
Manganese (Mn), % 0 to 0.2
0
Nickel (Ni), % 0
0.0050 to 0.020
Silicon (Si), % 0 to 0.25
0
Tin (Sn), % 0
0 to 0.0010
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 7.2 to 8.2
95.3 to 96.5
Residuals, % 0 to 0.15
0