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3005 Aluminum vs. AM50A Magnesium

3005 aluminum belongs to the aluminum alloys classification, while AM50A magnesium belongs to the magnesium alloys.

For each property being compared, the top bar is 3005 aluminum and the bottom bar is AM50A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 33 to 73
58
Elastic (Young's, Tensile) Modulus, GPa 70
45
Elongation at Break, % 1.1 to 16
11
Fatigue Strength, MPa 53 to 100
70
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
17
Shear Strength, MPa 84 to 150
120
Tensile Strength: Ultimate (UTS), MPa 140 to 270
210
Tensile Strength: Yield (Proof), MPa 51 to 240
120

Thermal Properties

Latent Heat of Fusion, J/g 400
350
Maximum Temperature: Mechanical, °C 180
120
Melting Completion (Liquidus), °C 660
620
Melting Onset (Solidus), °C 640
570
Specific Heat Capacity, J/kg-K 900
1000
Thermal Conductivity, W/m-K 160
65
Thermal Expansion, µm/m-K 23
26

Electrical Properties

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

Otherwise Unclassified Properties

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

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.2 to 18
19
Resilience: Unit (Modulus of Resilience), kJ/m3 18 to 390
150
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 49
71
Strength to Weight: Axial, points 14 to 27
35
Strength to Weight: Bending, points 21 to 33
47
Thermal Diffusivity, mm2/s 64
39
Thermal Shock Resistance, points 6.0 to 12
13

Alloy Composition

Aluminum (Al), % 95.7 to 98.8
4.4 to 5.4
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 0 to 0.3
0 to 0.010
Iron (Fe), % 0 to 0.7
0 to 0.0040
Magnesium (Mg), % 0.2 to 0.6
93.7 to 95.3
Manganese (Mn), % 1.0 to 1.5
0.26 to 0.6
Nickel (Ni), % 0
0 to 0.0020
Silicon (Si), % 0 to 0.6
0 to 0.1
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 0 to 0.25
0 to 0.22
Residuals, % 0 to 0.15
0