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EN-MC21120 Magnesium vs. 7005 Aluminum

EN-MC21120 magnesium belongs to the magnesium alloys classification, while 7005 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-MC21120 magnesium and the bottom bar is 7005 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 46
70
Elongation at Break, % 2.2 to 6.7
10 to 20
Fatigue Strength, MPa 84 to 96
100 to 190
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 18
26
Shear Strength, MPa 110 to 160
120 to 230
Tensile Strength: Ultimate (UTS), MPa 200 to 270
200 to 400
Tensile Strength: Yield (Proof), MPa 130 to 170
95 to 350

Thermal Properties

Latent Heat of Fusion, J/g 350
380
Maximum Temperature: Mechanical, °C 130
200
Melting Completion (Liquidus), °C 600
640
Melting Onset (Solidus), °C 490
610
Specific Heat Capacity, J/kg-K 990
880
Thermal Conductivity, W/m-K 76
140 to 170
Thermal Expansion, µm/m-K 26
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
35 to 43
Electrical Conductivity: Equal Weight (Specific), % IACS 59
110 to 130

Otherwise Unclassified Properties

Base Metal Price, % relative 12
9.5
Density, g/cm3 1.7
2.9
Embodied Carbon, kg CO2/kg material 22
8.3
Embodied Energy, MJ/kg 160
150
Embodied Water, L/kg 990
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.0 to 15
32 to 57
Resilience: Unit (Modulus of Resilience), kJ/m3 180 to 320
65 to 850
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 69
47
Strength to Weight: Axial, points 31 to 43
19 to 38
Strength to Weight: Bending, points 43 to 53
26 to 41
Thermal Diffusivity, mm2/s 44
54 to 65
Thermal Shock Resistance, points 11 to 16
8.7 to 18

Alloy Composition


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Aluminum (Al), % 8.3 to 9.7
91 to 94.7
Chromium (Cr), % 0
0.060 to 0.2
Copper (Cu), % 0 to 0.030
0 to 0.1
Iron (Fe), % 0 to 0.0050
0 to 0.4
Magnesium (Mg), % 88.6 to 91.3
1.0 to 1.8
Manganese (Mn), % 0.1 to 0.5
0.2 to 0.7
Nickel (Ni), % 0 to 0.0020
0
Silicon (Si), % 0 to 0.2
0 to 0.35
Titanium (Ti), % 0
0.010 to 0.060
Zinc (Zn), % 0.35 to 1.0
4.0 to 5.0
Zirconium (Zr), % 0
0.080 to 0.2
Residuals, % 0 to 0.010
0 to 0.15

Comparable Variants