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ZA-27 vs. 2218 Aluminum

ZA-27 belongs to the zinc alloys classification, while 2218 aluminum belongs to the aluminum alloys. They have a modest 29% of their average alloy composition in common, which, by itself, doesn't mean much. There are 31 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is ZA-27 and the bottom bar is 2218 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 100 to 120
95 to 110
Elastic (Young's, Tensile) Modulus, GPa 78
73
Elongation at Break, % 2.0 to 4.5
6.8 to 10
Fatigue Strength, MPa 110 to 170
110
Poisson's Ratio 0.27
0.33
Shear Modulus, GPa 31
27
Shear Strength, MPa 230 to 330
210 to 250
Tensile Strength: Ultimate (UTS), MPa 400 to 430
330 to 430
Tensile Strength: Yield (Proof), MPa 260 to 370
260 to 310

Thermal Properties

Latent Heat of Fusion, J/g 130
390
Maximum Temperature: Mechanical, °C 120
220
Melting Completion (Liquidus), °C 480
640
Melting Onset (Solidus), °C 380
510
Specific Heat Capacity, J/kg-K 530
870
Thermal Conductivity, W/m-K 130
140
Thermal Expansion, µm/m-K 26
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 30
37
Electrical Conductivity: Equal Weight (Specific), % IACS 53
110

Otherwise Unclassified Properties

Base Metal Price, % relative 11
11
Density, g/cm3 5.0
3.1
Embodied Carbon, kg CO2/kg material 4.2
8.2
Embodied Energy, MJ/kg 80
150
Embodied Water, L/kg 570
1130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 8.1 to 18
27 to 31
Resilience: Unit (Modulus of Resilience), kJ/m3 420 to 890
450 to 650
Stiffness to Weight: Axial, points 8.6
13
Stiffness to Weight: Bending, points 28
45
Strength to Weight: Axial, points 22 to 24
30 to 39
Strength to Weight: Bending, points 24 to 25
34 to 41
Thermal Diffusivity, mm2/s 47
52
Thermal Shock Resistance, points 14 to 15
15 to 19

Alloy Composition

Aluminum (Al), % 25 to 28
88.8 to 93.6
Cadmium (Cd), % 0 to 0.0060
0
Chromium (Cr), % 0
0 to 0.1
Copper (Cu), % 2.0 to 2.5
3.5 to 4.5
Iron (Fe), % 0 to 0.1
0 to 1.0
Lead (Pb), % 0 to 0.0060
0
Magnesium (Mg), % 0.010 to 0.020
1.2 to 1.8
Manganese (Mn), % 0
0 to 0.2
Nickel (Ni), % 0 to 0.020
1.7 to 2.3
Silicon (Si), % 0 to 0.080
0 to 0.9
Tin (Sn), % 0 to 0.0030
0
Zinc (Zn), % 69.3 to 73
0 to 0.25
Residuals, % 0
0 to 0.15