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EN-MC65120 Magnesium vs. 5457 Aluminum

EN-MC65120 magnesium belongs to the magnesium alloys classification, while 5457 aluminum belongs to the aluminum alloys.

For each property being compared, the top bar is EN-MC65120 magnesium and the bottom bar is 5457 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 55
32 to 55
Elastic (Young's, Tensile) Modulus, GPa 45
68
Elongation at Break, % 3.1
6.0 to 22
Fatigue Strength, MPa 80
55 to 98
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 17
26
Shear Strength, MPa 92
85 to 130
Tensile Strength: Ultimate (UTS), MPa 160
130 to 210
Tensile Strength: Yield (Proof), MPa 110
50 to 190

Thermal Properties

Latent Heat of Fusion, J/g 330
400
Maximum Temperature: Mechanical, °C 180
180
Melting Completion (Liquidus), °C 590
660
Melting Onset (Solidus), °C 520
630
Specific Heat Capacity, J/kg-K 970
900
Thermal Conductivity, W/m-K 100
180
Thermal Expansion, µm/m-K 26
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
46
Electrical Conductivity: Equal Weight (Specific), % IACS 120
150

Otherwise Unclassified Properties

Base Metal Price, % relative 25
9.5
Density, g/cm3 1.9
2.7
Embodied Carbon, kg CO2/kg material 25
8.4
Embodied Energy, MJ/kg 190
160
Embodied Water, L/kg 930
1190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.4
12 to 23
Resilience: Unit (Modulus of Resilience), kJ/m3 140
18 to 250
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 62
50
Strength to Weight: Axial, points 23
13 to 21
Strength to Weight: Bending, points 34
21 to 28
Thermal Diffusivity, mm2/s 56
72
Thermal Shock Resistance, points 9.8
5.7 to 9.0

Alloy Composition


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Aluminum (Al), % 0
97.8 to 99.05
Copper (Cu), % 0 to 0.030
0 to 0.2
Iron (Fe), % 0 to 0.010
0 to 0.1
Magnesium (Mg), % 91.8 to 95.1
0.8 to 1.2
Manganese (Mn), % 0 to 0.15
0.15 to 0.45
Nickel (Ni), % 0 to 0.0050
0
Silicon (Si), % 0 to 0.010
0 to 0.080
Unspecified Rare Earths, % 2.5 to 4.0
0
Vanadium (V), % 0
0 to 0.050
Zinc (Zn), % 2.0 to 3.0
0 to 0.050
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.010
0 to 0.1