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ISO-WD21150 Magnesium vs. 7022 Aluminum

ISO-WD21150 magnesium belongs to the magnesium alloys classification, while 7022 aluminum belongs to the aluminum alloys. There are 29 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 ISO-WD21150 magnesium and the bottom bar is 7022 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
70
Elongation at Break, % 5.7 to 11
6.3 to 8.0
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 17
26
Shear Strength, MPa 150 to 170
290 to 320
Tensile Strength: Ultimate (UTS), MPa 240 to 290
490 to 540
Tensile Strength: Yield (Proof), MPa 120 to 200
390 to 460

Thermal Properties

Latent Heat of Fusion, J/g 350
380
Maximum Temperature: Mechanical, °C 110
200
Melting Completion (Liquidus), °C 600
640
Melting Onset (Solidus), °C 550
480
Specific Heat Capacity, J/kg-K 990
870
Thermal Conductivity, W/m-K 100
140
Thermal Expansion, µm/m-K 27
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 19
21
Electrical Conductivity: Equal Weight (Specific), % IACS 100
65

Otherwise Unclassified Properties

Base Metal Price, % relative 12
10
Density, g/cm3 1.7
2.9
Embodied Carbon, kg CO2/kg material 23
8.5
Embodied Energy, MJ/kg 160
150
Embodied Water, L/kg 980
1130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 15 to 24
29 to 40
Resilience: Unit (Modulus of Resilience), kJ/m3 160 to 460
1100 to 1500
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 70
47
Strength to Weight: Axial, points 40 to 48
47 to 51
Strength to Weight: Bending, points 52 to 58
47 to 50
Thermal Diffusivity, mm2/s 60
54
Thermal Shock Resistance, points 15 to 17
21 to 23

Alloy Composition

Aluminum (Al), % 2.4 to 3.6
87.9 to 92.4
Chromium (Cr), % 0
0.1 to 0.3
Copper (Cu), % 0 to 0.050
0.5 to 1.0
Iron (Fe), % 0 to 0.0050
0 to 0.5
Magnesium (Mg), % 94 to 97
2.6 to 3.7
Manganese (Mn), % 0.15 to 0.4
0.1 to 0.4
Nickel (Ni), % 0 to 0.0050
0
Silicon (Si), % 0 to 0.1
0 to 0.5
Titanium (Ti), % 0
0 to 0.2
Zinc (Zn), % 0.5 to 1.5
4.3 to 5.2
Zirconium (Zr), % 0
0 to 0.2
Residuals, % 0
0 to 0.15