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2124 Aluminum vs. ISO-WD32260 Magnesium

2124 aluminum belongs to the aluminum alloys classification, while ISO-WD32260 magnesium belongs to the magnesium alloys.

For each property being compared, the top bar is 2124 aluminum and the bottom bar is ISO-WD32260 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
46
Elongation at Break, % 5.7
4.5 to 6.0
Fatigue Strength, MPa 130
150 to 190
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
18
Shear Strength, MPa 280
190 to 200
Tensile Strength: Ultimate (UTS), MPa 490
330 to 340
Tensile Strength: Yield (Proof), MPa 430
230 to 250

Thermal Properties

Latent Heat of Fusion, J/g 390
330
Maximum Temperature: Mechanical, °C 190
120
Melting Completion (Liquidus), °C 640
600
Melting Onset (Solidus), °C 500
520
Specific Heat Capacity, J/kg-K 880
970
Thermal Conductivity, W/m-K 150
110
Thermal Expansion, µm/m-K 23
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 38
28
Electrical Conductivity: Equal Weight (Specific), % IACS 110
140

Otherwise Unclassified Properties

Base Metal Price, % relative 10
13
Density, g/cm3 3.0
1.9
Embodied Carbon, kg CO2/kg material 8.2
23
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1150
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 27
14 to 19
Resilience: Unit (Modulus of Resilience), kJ/m3 1290
560 to 700
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 46
63
Strength to Weight: Axial, points 45
48 to 51
Strength to Weight: Bending, points 46
56 to 58
Thermal Diffusivity, mm2/s 58
63
Thermal Shock Resistance, points 21
19 to 20

Alloy Composition

Aluminum (Al), % 91.3 to 94.7
0
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 3.8 to 4.9
0
Iron (Fe), % 0 to 0.3
0
Magnesium (Mg), % 1.2 to 1.8
92.7 to 94.8
Manganese (Mn), % 0.3 to 0.9
0
Silicon (Si), % 0 to 0.2
0
Titanium (Ti), % 0 to 0.15
0
Zinc (Zn), % 0 to 0.25
4.8 to 6.2
Zirconium (Zr), % 0
0.45 to 0.8
Residuals, % 0
0 to 0.3