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3303 Aluminum vs. ZK40A Magnesium

3303 aluminum belongs to the aluminum alloys classification, while ZK40A magnesium belongs to the magnesium alloys.

For each property being compared, the top bar is 3303 aluminum and the bottom bar is ZK40A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
45
Elongation at Break, % 23
4.2
Fatigue Strength, MPa 43
190
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
17
Shear Strength, MPa 69
160
Tensile Strength: Ultimate (UTS), MPa 110
280
Tensile Strength: Yield (Proof), MPa 39
260

Thermal Properties

Latent Heat of Fusion, J/g 400
340
Maximum Temperature: Mechanical, °C 180
120
Melting Completion (Liquidus), °C 650
600
Melting Onset (Solidus), °C 620
540
Specific Heat Capacity, J/kg-K 900
970
Thermal Conductivity, W/m-K 170
110
Thermal Expansion, µm/m-K 23
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 43
27
Electrical Conductivity: Equal Weight (Specific), % IACS 140
130

Otherwise Unclassified Properties

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

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 20
12
Resilience: Unit (Modulus of Resilience), kJ/m3 11
740
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 49
65
Strength to Weight: Axial, points 11
43
Strength to Weight: Bending, points 18
53
Thermal Diffusivity, mm2/s 67
62
Thermal Shock Resistance, points 4.8
17

Alloy Composition

Aluminum (Al), % 96.6 to 99
0
Copper (Cu), % 0.050 to 0.2
0
Iron (Fe), % 0 to 0.7
0
Magnesium (Mg), % 0
94.2 to 96.1
Manganese (Mn), % 1.0 to 1.5
0
Silicon (Si), % 0 to 0.6
0
Zinc (Zn), % 0 to 0.3
3.5 to 4.5
Zirconium (Zr), % 0
0.45 to 1.0
Residuals, % 0
0 to 0.3