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ZA-27 vs. 2025 Aluminum

ZA-27 belongs to the zinc alloys classification, while 2025 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 2025 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 100 to 120
110
Elastic (Young's, Tensile) Modulus, GPa 78
72
Elongation at Break, % 2.0 to 4.5
15
Fatigue Strength, MPa 110 to 170
130
Poisson's Ratio 0.27
0.33
Shear Modulus, GPa 31
27
Shear Strength, MPa 230 to 330
240
Tensile Strength: Ultimate (UTS), MPa 400 to 430
400
Tensile Strength: Yield (Proof), MPa 260 to 370
260

Thermal Properties

Latent Heat of Fusion, J/g 130
400
Maximum Temperature: Mechanical, °C 120
190
Melting Completion (Liquidus), °C 480
640
Melting Onset (Solidus), °C 380
520
Specific Heat Capacity, J/kg-K 530
870
Thermal Conductivity, W/m-K 130
150
Thermal Expansion, µm/m-K 26
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 30
40
Electrical Conductivity: Equal Weight (Specific), % IACS 53
120

Otherwise Unclassified Properties

Base Metal Price, % relative 11
10
Density, g/cm3 5.0
3.0
Embodied Carbon, kg CO2/kg material 4.2
7.9
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
55
Resilience: Unit (Modulus of Resilience), kJ/m3 420 to 890
450
Stiffness to Weight: Axial, points 8.6
13
Stiffness to Weight: Bending, points 28
46
Strength to Weight: Axial, points 22 to 24
37
Strength to Weight: Bending, points 24 to 25
40
Thermal Diffusivity, mm2/s 47
58
Thermal Shock Resistance, points 14 to 15
18

Alloy Composition

Aluminum (Al), % 25 to 28
90.9 to 95.2
Cadmium (Cd), % 0 to 0.0060
0
Chromium (Cr), % 0
0 to 0.1
Copper (Cu), % 2.0 to 2.5
3.9 to 5.0
Iron (Fe), % 0 to 0.1
0 to 1.0
Lead (Pb), % 0 to 0.0060
0
Magnesium (Mg), % 0.010 to 0.020
0 to 0.050
Manganese (Mn), % 0
0.4 to 1.2
Nickel (Ni), % 0 to 0.020
0
Silicon (Si), % 0 to 0.080
0.5 to 1.2
Tin (Sn), % 0 to 0.0030
0
Titanium (Ti), % 0
0 to 0.15
Zinc (Zn), % 69.3 to 73
0 to 0.25
Residuals, % 0
0 to 0.15