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AS41A Magnesium vs. 2030 Aluminum

AS41A magnesium belongs to the magnesium alloys classification, while 2030 aluminum belongs to the aluminum alloys.

For each property being compared, the top bar is AS41A magnesium and the bottom bar is 2030 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
70
Elongation at Break, % 11
5.6 to 8.0
Fatigue Strength, MPa 100
91 to 110
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 17
26
Shear Strength, MPa 130
220 to 250
Tensile Strength: Ultimate (UTS), MPa 230
370 to 420
Tensile Strength: Yield (Proof), MPa 140
240 to 270

Thermal Properties

Latent Heat of Fusion, J/g 370
390
Maximum Temperature: Mechanical, °C 110
190
Melting Completion (Liquidus), °C 620
640
Melting Onset (Solidus), °C 570
510
Specific Heat Capacity, J/kg-K 1000
870
Thermal Conductivity, W/m-K 68
130
Thermal Expansion, µm/m-K 26
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 17
34
Electrical Conductivity: Equal Weight (Specific), % IACS 92
99

Otherwise Unclassified Properties

Base Metal Price, % relative 12
10
Density, g/cm3 1.6
3.1
Embodied Carbon, kg CO2/kg material 23
8.0
Embodied Energy, MJ/kg 160
150
Embodied Water, L/kg 980
1140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 21
21 to 26
Resilience: Unit (Modulus of Resilience), kJ/m3 220
390 to 530
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 72
45
Strength to Weight: Axial, points 38
33 to 38
Strength to Weight: Bending, points 50
37 to 40
Thermal Diffusivity, mm2/s 41
50
Thermal Shock Resistance, points 14
16 to 19

Alloy Composition

Aluminum (Al), % 3.5 to 5.0
88.9 to 95.2
Bismuth (Bi), % 0
0 to 0.2
Chromium (Cr), % 0
0 to 0.1
Copper (Cu), % 0 to 0.060
3.3 to 4.5
Iron (Fe), % 0
0 to 0.7
Lead (Pb), % 0
0.8 to 1.5
Magnesium (Mg), % 92.8 to 95.8
0.5 to 1.3
Manganese (Mn), % 0.2 to 0.5
0.2 to 1.0
Nickel (Ni), % 0 to 0.030
0
Silicon (Si), % 0.5 to 1.5
0 to 0.8
Titanium (Ti), % 0
0 to 0.2
Zinc (Zn), % 0 to 0.12
0 to 0.5
Residuals, % 0
0 to 0.3