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2017 Aluminum vs. ISO-WD21150 Magnesium

2017 aluminum belongs to the aluminum alloys classification, while ISO-WD21150 magnesium belongs to the magnesium 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 2017 aluminum and the bottom bar is ISO-WD21150 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
45
Elongation at Break, % 12 to 18
5.7 to 11
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
17
Shear Strength, MPa 130 to 260
150 to 170
Tensile Strength: Ultimate (UTS), MPa 190 to 430
240 to 290
Tensile Strength: Yield (Proof), MPa 76 to 260
120 to 200

Thermal Properties

Latent Heat of Fusion, J/g 390
350
Maximum Temperature: Mechanical, °C 190
110
Melting Completion (Liquidus), °C 640
600
Melting Onset (Solidus), °C 510
550
Specific Heat Capacity, J/kg-K 880
990
Thermal Conductivity, W/m-K 150
100
Thermal Expansion, µm/m-K 24
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 38
19
Electrical Conductivity: Equal Weight (Specific), % IACS 110
100

Otherwise Unclassified Properties

Base Metal Price, % relative 10
12
Density, g/cm3 3.0
1.7
Embodied Carbon, kg CO2/kg material 8.0
23
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1140
980

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 24 to 66
15 to 24
Resilience: Unit (Modulus of Resilience), kJ/m3 41 to 470
160 to 460
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 46
70
Strength to Weight: Axial, points 17 to 40
40 to 48
Strength to Weight: Bending, points 24 to 42
52 to 58
Thermal Diffusivity, mm2/s 56
60
Thermal Shock Resistance, points 7.9 to 18
15 to 17

Alloy Composition

Aluminum (Al), % 91.6 to 95.5
2.4 to 3.6
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 3.5 to 4.5
0 to 0.050
Iron (Fe), % 0 to 0.7
0 to 0.0050
Magnesium (Mg), % 0.4 to 0.8
94 to 97
Manganese (Mn), % 0.4 to 1.0
0.15 to 0.4
Nickel (Ni), % 0
0 to 0.0050
Silicon (Si), % 0.2 to 0.8
0 to 0.1
Titanium (Ti), % 0 to 0.15
0
Zinc (Zn), % 0 to 0.25
0.5 to 1.5
Residuals, % 0
0 to 0.3

Comparable Variants