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EN-MC65120 Magnesium vs. 771.0 Aluminum

EN-MC65120 magnesium belongs to the magnesium alloys classification, while 771.0 aluminum belongs to the aluminum alloys. There are 30 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 EN-MC65120 magnesium and the bottom bar is 771.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 55
85 to 120
Elastic (Young's, Tensile) Modulus, GPa 45
70
Elongation at Break, % 3.1
1.7 to 6.5
Fatigue Strength, MPa 80
92 to 180
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 17
26
Tensile Strength: Ultimate (UTS), MPa 160
250 to 370
Tensile Strength: Yield (Proof), MPa 110
210 to 350

Thermal Properties

Latent Heat of Fusion, J/g 330
380
Maximum Temperature: Mechanical, °C 180
180
Melting Completion (Liquidus), °C 590
630
Melting Onset (Solidus), °C 520
620
Specific Heat Capacity, J/kg-K 970
870
Thermal Conductivity, W/m-K 100
140 to 150
Thermal Expansion, µm/m-K 26
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
27
Electrical Conductivity: Equal Weight (Specific), % IACS 120
82

Otherwise Unclassified Properties

Base Metal Price, % relative 25
9.5
Density, g/cm3 1.9
3.0
Embodied Carbon, kg CO2/kg material 25
8.0
Embodied Energy, MJ/kg 190
150
Embodied Water, L/kg 930
1130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.4
4.4 to 20
Resilience: Unit (Modulus of Resilience), kJ/m3 140
310 to 900
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 62
46
Strength to Weight: Axial, points 23
23 to 35
Strength to Weight: Bending, points 34
29 to 39
Thermal Diffusivity, mm2/s 56
54 to 58
Thermal Shock Resistance, points 9.8
11 to 16

Alloy Composition

Aluminum (Al), % 0
90.5 to 92.5
Chromium (Cr), % 0
0.060 to 0.2
Copper (Cu), % 0 to 0.030
0 to 0.1
Iron (Fe), % 0 to 0.010
0 to 0.15
Magnesium (Mg), % 91.8 to 95.1
0.8 to 1.0
Manganese (Mn), % 0 to 0.15
0 to 0.1
Nickel (Ni), % 0 to 0.0050
0
Silicon (Si), % 0 to 0.010
0 to 0.15
Titanium (Ti), % 0
0.1 to 0.2
Unspecified Rare Earths, % 2.5 to 4.0
0
Zinc (Zn), % 2.0 to 3.0
6.5 to 7.5
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.010
0 to 0.15