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772.0 Aluminum vs. ZK51A Magnesium

772.0 aluminum belongs to the aluminum alloys classification, while ZK51A magnesium belongs to the magnesium alloys. There are 29 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is 772.0 aluminum and the bottom bar is ZK51A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
45
Elongation at Break, % 6.3 to 8.4
4.7
Fatigue Strength, MPa 94 to 160
62
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 26
18
Tensile Strength: Ultimate (UTS), MPa 260 to 320
240
Tensile Strength: Yield (Proof), MPa 220 to 250
150

Thermal Properties

Latent Heat of Fusion, J/g 380
340
Maximum Temperature: Mechanical, °C 180
120
Melting Completion (Liquidus), °C 630
640
Melting Onset (Solidus), °C 580
550
Specific Heat Capacity, J/kg-K 870
970
Thermal Conductivity, W/m-K 150
110
Thermal Expansion, µm/m-K 24
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 35
28
Electrical Conductivity: Equal Weight (Specific), % IACS 110
140

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
13
Density, g/cm3 3.0
1.8
Embodied Carbon, kg CO2/kg material 8.0
24
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1140
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 16 to 25
10
Resilience: Unit (Modulus of Resilience), kJ/m3 350 to 430
260
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 46
64
Strength to Weight: Axial, points 25 to 31
36
Strength to Weight: Bending, points 31 to 36
47
Thermal Diffusivity, mm2/s 58
61
Thermal Shock Resistance, points 11 to 14
15

Alloy Composition

Aluminum (Al), % 91.2 to 93.2
0
Chromium (Cr), % 0.060 to 0.2
0
Copper (Cu), % 0 to 0.1
0 to 0.1
Iron (Fe), % 0 to 0.15
0
Magnesium (Mg), % 0.6 to 0.8
93.1 to 95.9
Manganese (Mn), % 0 to 0.1
0
Nickel (Ni), % 0
0 to 0.010
Silicon (Si), % 0 to 0.15
0
Titanium (Ti), % 0.1 to 0.2
0
Zinc (Zn), % 6.0 to 7.0
3.6 to 5.5
Zirconium (Zr), % 0
0.5 to 1.0
Residuals, % 0
0 to 0.3