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AM50A Magnesium vs. 3103 Aluminum

AM50A magnesium belongs to the magnesium alloys classification, while 3103 aluminum belongs to the aluminum alloys.

For each property being compared, the top bar is AM50A magnesium and the bottom bar is 3103 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 58
27 to 62
Elastic (Young's, Tensile) Modulus, GPa 45
70
Elongation at Break, % 11
1.1 to 28
Fatigue Strength, MPa 70
38 to 83
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 17
26
Shear Strength, MPa 120
68 to 130
Tensile Strength: Ultimate (UTS), MPa 210
100 to 220
Tensile Strength: Yield (Proof), MPa 120
39 to 200

Thermal Properties

Latent Heat of Fusion, J/g 350
400
Maximum Temperature: Mechanical, °C 120
190
Melting Completion (Liquidus), °C 620
660
Melting Onset (Solidus), °C 570
640
Specific Heat Capacity, J/kg-K 1000
900
Thermal Conductivity, W/m-K 65
160
Thermal Expansion, µm/m-K 26
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 16
42
Electrical Conductivity: Equal Weight (Specific), % IACS 88
140

Otherwise Unclassified Properties

Base Metal Price, % relative 12
9.5
Density, g/cm3 1.7
2.8
Embodied Carbon, kg CO2/kg material 23
8.2
Embodied Energy, MJ/kg 160
150
Embodied Water, L/kg 990
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 19
2.4 to 24
Resilience: Unit (Modulus of Resilience), kJ/m3 150
11 to 280
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 71
50
Strength to Weight: Axial, points 35
10 to 22
Strength to Weight: Bending, points 47
18 to 30
Thermal Diffusivity, mm2/s 39
64
Thermal Shock Resistance, points 13
4.6 to 9.9

Alloy Composition


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Aluminum (Al), % 4.4 to 5.4
96.3 to 99.1
Chromium (Cr), % 0
0 to 0.1
Copper (Cu), % 0 to 0.010
0 to 0.1
Iron (Fe), % 0 to 0.0040
0 to 0.7
Magnesium (Mg), % 93.7 to 95.3
0 to 0.3
Manganese (Mn), % 0.26 to 0.6
0.9 to 1.5
Nickel (Ni), % 0 to 0.0020
0
Silicon (Si), % 0 to 0.1
0 to 0.5
Titanium (Ti), % 0
0 to 0.1
Zinc (Zn), % 0 to 0.22
0 to 0.2
Zirconium (Zr), % 0
0 to 0.1
Residuals, % 0
0 to 0.15