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712.0 Aluminum vs. ZK51A Magnesium

712.0 aluminum belongs to the aluminum alloys classification, while ZK51A magnesium belongs to the magnesium alloys. There are 31 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is 712.0 aluminum and the bottom bar is ZK51A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
45
Elongation at Break, % 4.5 to 4.7
4.7
Fatigue Strength, MPa 140 to 180
62
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 27
18
Shear Strength, MPa 180
160
Tensile Strength: Ultimate (UTS), MPa 250 to 260
240
Tensile Strength: Yield (Proof), MPa 180 to 200
150

Thermal Properties

Latent Heat of Fusion, J/g 380
340
Maximum Temperature: Mechanical, °C 190
120
Melting Completion (Liquidus), °C 640
640
Melting Onset (Solidus), °C 610
550
Solidification (Pattern Maker's) Shrinkage, % 1.6
1.3
Specific Heat Capacity, J/kg-K 870
970
Thermal Conductivity, W/m-K 160
110
Thermal Expansion, µm/m-K 24
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
28
Electrical Conductivity: Equal Weight (Specific), % IACS 120
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 11
10
Resilience: Unit (Modulus of Resilience), kJ/m3 240 to 270
260
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 46
64
Strength to Weight: Axial, points 24 to 25
36
Strength to Weight: Bending, points 30 to 31
47
Thermal Diffusivity, mm2/s 62
61
Thermal Shock Resistance, points 11
15

Alloy Composition

Aluminum (Al), % 90.7 to 94
0
Chromium (Cr), % 0.4 to 0.6
0
Copper (Cu), % 0 to 0.25
0 to 0.1
Iron (Fe), % 0 to 0.5
0
Magnesium (Mg), % 0.5 to 0.65
93.1 to 95.9
Manganese (Mn), % 0 to 0.1
0
Nickel (Ni), % 0
0 to 0.010
Silicon (Si), % 0 to 0.3
0
Titanium (Ti), % 0.15 to 0.25
0
Zinc (Zn), % 5.0 to 6.5
3.6 to 5.5
Zirconium (Zr), % 0
0.5 to 1.0
Residuals, % 0
0 to 0.3