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EN-MC21220 Magnesium vs. 6070 Aluminum

EN-MC21220 magnesium belongs to the magnesium alloys classification, while 6070 aluminum belongs to the aluminum alloys. There are 30 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is EN-MC21220 magnesium and the bottom bar is 6070 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
70
Elongation at Break, % 11
5.6 to 8.6
Fatigue Strength, MPa 89
95 to 130
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 17
26
Shear Strength, MPa 120
220 to 240
Tensile Strength: Ultimate (UTS), MPa 210
370 to 380
Tensile Strength: Yield (Proof), MPa 120
350

Thermal Properties

Latent Heat of Fusion, J/g 350
410
Maximum Temperature: Mechanical, °C 120
160
Melting Completion (Liquidus), °C 600
650
Melting Onset (Solidus), °C 540
570
Specific Heat Capacity, J/kg-K 1000
900
Thermal Conductivity, W/m-K 65
160
Thermal Expansion, µm/m-K 27
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 16
41
Electrical Conductivity: Equal Weight (Specific), % IACS 87
140

Otherwise Unclassified Properties

Base Metal Price, % relative 12
9.5
Density, g/cm3 1.7
2.7
Embodied Carbon, kg CO2/kg material 23
8.3
Embodied Energy, MJ/kg 160
150
Embodied Water, L/kg 990
1170

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 20
20 to 32
Resilience: Unit (Modulus of Resilience), kJ/m3 160
880 to 900
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 71
50
Strength to Weight: Axial, points 34
38
Strength to Weight: Bending, points 46
42 to 43
Thermal Diffusivity, mm2/s 39
65
Thermal Shock Resistance, points 12
16 to 17

Alloy Composition

Aluminum (Al), % 4.4 to 5.5
94.6 to 98
Chromium (Cr), % 0
0 to 0.1
Copper (Cu), % 0 to 0.010
0.15 to 0.4
Iron (Fe), % 0 to 0.0050
0 to 0.5
Magnesium (Mg), % 93.5 to 95.5
0.5 to 1.2
Manganese (Mn), % 0.1 to 0.6
0.4 to 1.0
Nickel (Ni), % 0 to 0.0020
0
Silicon (Si), % 0 to 0.1
1.0 to 1.7
Titanium (Ti), % 0
0 to 0.15
Zinc (Zn), % 0 to 0.3
0 to 0.25
Residuals, % 0
0 to 0.15