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3005 Aluminum vs. EN-MC21220 Magnesium

3005 aluminum belongs to the aluminum alloys classification, while EN-MC21220 magnesium belongs to the magnesium alloys.

For each property being compared, the top bar is 3005 aluminum and the bottom bar is EN-MC21220 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
89
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
600
Melting Onset (Solidus), °C 640
540
Specific Heat Capacity, J/kg-K 900
1000
Thermal Conductivity, W/m-K 160
65
Thermal Expansion, µm/m-K 23
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 42
16
Electrical Conductivity: Equal Weight (Specific), % IACS 140
87

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
20
Resilience: Unit (Modulus of Resilience), kJ/m3 18 to 390
160
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 49
71
Strength to Weight: Axial, points 14 to 27
34
Strength to Weight: Bending, points 21 to 33
46
Thermal Diffusivity, mm2/s 64
39
Thermal Shock Resistance, points 6.0 to 12
12

Alloy Composition

Aluminum (Al), % 95.7 to 98.8
4.4 to 5.5
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 0.0050
Magnesium (Mg), % 0.2 to 0.6
93.5 to 95.5
Manganese (Mn), % 1.0 to 1.5
0.1 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 0.3
Residuals, % 0
0 to 0.010