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EN-MC35110 Magnesium vs. 2218 Aluminum

EN-MC35110 magnesium belongs to the magnesium alloys classification, while 2218 aluminum belongs to the aluminum alloys.

For each property being compared, the top bar is EN-MC35110 magnesium and the bottom bar is 2218 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 63
95 to 110
Elastic (Young's, Tensile) Modulus, GPa 45
73
Elongation at Break, % 3.1
6.8 to 10
Fatigue Strength, MPa 110
110
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 18
27
Shear Strength, MPa 130
210 to 250
Tensile Strength: Ultimate (UTS), MPa 230
330 to 430
Tensile Strength: Yield (Proof), MPa 150
260 to 310

Thermal Properties

Latent Heat of Fusion, J/g 330
390
Maximum Temperature: Mechanical, °C 140
220
Melting Completion (Liquidus), °C 600
640
Melting Onset (Solidus), °C 520
510
Specific Heat Capacity, J/kg-K 970
870
Thermal Conductivity, W/m-K 110
140
Thermal Expansion, µm/m-K 26
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
37
Electrical Conductivity: Equal Weight (Specific), % IACS 130
110

Otherwise Unclassified Properties

Base Metal Price, % relative 18
11
Density, g/cm3 1.9
3.1
Embodied Carbon, kg CO2/kg material 24
8.2
Embodied Energy, MJ/kg 170
150
Embodied Water, L/kg 940
1130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.3
27 to 31
Resilience: Unit (Modulus of Resilience), kJ/m3 260
450 to 650
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 63
45
Strength to Weight: Axial, points 34
30 to 39
Strength to Weight: Bending, points 44
34 to 41
Thermal Diffusivity, mm2/s 61
52
Thermal Shock Resistance, points 14
15 to 19

Alloy Composition

Aluminum (Al), % 0
88.8 to 93.6
Chromium (Cr), % 0
0 to 0.1
Copper (Cu), % 0 to 0.030
3.5 to 4.5
Iron (Fe), % 0 to 0.010
0 to 1.0
Magnesium (Mg), % 92 to 95.4
1.2 to 1.8
Manganese (Mn), % 0 to 0.15
0 to 0.2
Nickel (Ni), % 0 to 0.0050
1.7 to 2.3
Silicon (Si), % 0 to 0.010
0 to 0.9
Unspecified Rare Earths, % 0.75 to 1.8
0
Zinc (Zn), % 3.5 to 5.0
0 to 0.25
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0
0 to 0.15