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772.0 Aluminum vs. EN-MC65120 Magnesium

772.0 aluminum belongs to the aluminum alloys classification, while EN-MC65120 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 EN-MC65120 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
45
Elongation at Break, % 6.3 to 8.4
3.1
Fatigue Strength, MPa 94 to 160
80
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 26
17
Tensile Strength: Ultimate (UTS), MPa 260 to 320
160
Tensile Strength: Yield (Proof), MPa 220 to 250
110

Thermal Properties

Latent Heat of Fusion, J/g 380
330
Maximum Temperature: Mechanical, °C 180
180
Melting Completion (Liquidus), °C 630
590
Melting Onset (Solidus), °C 580
520
Specific Heat Capacity, J/kg-K 870
970
Thermal Conductivity, W/m-K 150
100
Thermal Expansion, µm/m-K 24
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 35
25
Electrical Conductivity: Equal Weight (Specific), % IACS 110
120

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
25
Density, g/cm3 3.0
1.9
Embodied Carbon, kg CO2/kg material 8.0
25
Embodied Energy, MJ/kg 150
190
Embodied Water, L/kg 1140
930

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 16 to 25
4.4
Resilience: Unit (Modulus of Resilience), kJ/m3 350 to 430
140
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 46
62
Strength to Weight: Axial, points 25 to 31
23
Strength to Weight: Bending, points 31 to 36
34
Thermal Diffusivity, mm2/s 58
56
Thermal Shock Resistance, points 11 to 14
9.8

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 0.030
Iron (Fe), % 0 to 0.15
0 to 0.010
Magnesium (Mg), % 0.6 to 0.8
91.8 to 95.1
Manganese (Mn), % 0 to 0.1
0 to 0.15
Nickel (Ni), % 0
0 to 0.0050
Silicon (Si), % 0 to 0.15
0 to 0.010
Titanium (Ti), % 0.1 to 0.2
0
Unspecified Rare Earths, % 0
2.5 to 4.0
Zinc (Zn), % 6.0 to 7.0
2.0 to 3.0
Zirconium (Zr), % 0
0.4 to 1.0
Residuals, % 0 to 0.15
0 to 0.010