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ISO-WD32250 Magnesium vs. 3303 Aluminum

ISO-WD32250 magnesium belongs to the magnesium alloys classification, while 3303 aluminum belongs to the aluminum alloys.

For each property being compared, the top bar is ISO-WD32250 magnesium and the bottom bar is 3303 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
70
Elongation at Break, % 4.5 to 8.6
23
Fatigue Strength, MPa 170 to 210
43
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 17
26
Shear Strength, MPa 180 to 190
69
Tensile Strength: Ultimate (UTS), MPa 310 to 330
110
Tensile Strength: Yield (Proof), MPa 240 to 290
39

Thermal Properties

Latent Heat of Fusion, J/g 340
400
Maximum Temperature: Mechanical, °C 120
180
Melting Completion (Liquidus), °C 600
650
Melting Onset (Solidus), °C 550
620
Specific Heat Capacity, J/kg-K 980
900
Thermal Conductivity, W/m-K 130
170
Thermal Expansion, µm/m-K 26
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
43
Electrical Conductivity: Equal Weight (Specific), % IACS 130
140

Otherwise Unclassified Properties

Base Metal Price, % relative 13
9.5
Density, g/cm3 1.8
2.8
Embodied Carbon, kg CO2/kg material 24
8.1
Embodied Energy, MJ/kg 160
150
Embodied Water, L/kg 950
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 14 to 26
20
Resilience: Unit (Modulus of Resilience), kJ/m3 630 to 930
11
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 67
49
Strength to Weight: Axial, points 49 to 51
11
Strength to Weight: Bending, points 58 to 60
18
Thermal Diffusivity, mm2/s 72
67
Thermal Shock Resistance, points 19 to 20
4.8

Alloy Composition

Aluminum (Al), % 0
96.6 to 99
Copper (Cu), % 0
0.050 to 0.2
Iron (Fe), % 0
0 to 0.7
Magnesium (Mg), % 94.9 to 97.1
0
Manganese (Mn), % 0
1.0 to 1.5
Silicon (Si), % 0
0 to 0.6
Zinc (Zn), % 2.5 to 4.0
0 to 0.3
Zirconium (Zr), % 0.45 to 0.8
0
Residuals, % 0
0 to 0.15