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EN-MC35110 Magnesium vs. 7020 Aluminum

EN-MC35110 magnesium belongs to the magnesium alloys classification, while 7020 aluminum belongs to the aluminum alloys.

For each property being compared, the top bar is EN-MC35110 magnesium and the bottom bar is 7020 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 63
45 to 100
Elastic (Young's, Tensile) Modulus, GPa 45
70
Elongation at Break, % 3.1
8.4 to 14
Fatigue Strength, MPa 110
110 to 130
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 18
26
Shear Strength, MPa 130
110 to 230
Tensile Strength: Ultimate (UTS), MPa 230
190 to 390
Tensile Strength: Yield (Proof), MPa 150
120 to 310

Thermal Properties

Latent Heat of Fusion, J/g 330
380
Maximum Temperature: Mechanical, °C 140
210
Melting Completion (Liquidus), °C 600
650
Melting Onset (Solidus), °C 520
610
Specific Heat Capacity, J/kg-K 970
880
Thermal Conductivity, W/m-K 110
150
Thermal Expansion, µm/m-K 26
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
39
Electrical Conductivity: Equal Weight (Specific), % IACS 130
120

Otherwise Unclassified Properties

Base Metal Price, % relative 18
9.5
Density, g/cm3 1.9
2.9
Embodied Carbon, kg CO2/kg material 24
8.3
Embodied Energy, MJ/kg 170
150
Embodied Water, L/kg 940
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.3
23 to 46
Resilience: Unit (Modulus of Resilience), kJ/m3 260
110 to 690
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 63
47
Strength to Weight: Axial, points 34
18 to 37
Strength to Weight: Bending, points 44
25 to 41
Thermal Diffusivity, mm2/s 61
59
Thermal Shock Resistance, points 14
8.3 to 17

Alloy Composition

Aluminum (Al), % 0
91.2 to 94.8
Chromium (Cr), % 0
0.1 to 0.35
Copper (Cu), % 0 to 0.030
0 to 0.2
Iron (Fe), % 0 to 0.010
0 to 0.4
Magnesium (Mg), % 92 to 95.4
1.0 to 1.4
Manganese (Mn), % 0 to 0.15
0.050 to 0.5
Nickel (Ni), % 0 to 0.0050
0
Silicon (Si), % 0 to 0.010
0 to 0.35
Titanium (Ti), % 0
0 to 0.25
Unspecified Rare Earths, % 0.75 to 1.8
0
Zinc (Zn), % 3.5 to 5.0
4.0 to 5.0
Zirconium (Zr), % 0.4 to 1.0
0.080 to 0.25
Residuals, % 0 to 0.010
0 to 0.15