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3105 Aluminum vs. EN-MC21210 Magnesium

3105 aluminum belongs to the aluminum alloys classification, while EN-MC21210 magnesium belongs to the magnesium alloys. There are 31 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is 3105 aluminum and the bottom bar is EN-MC21210 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 29 to 67
48
Elastic (Young's, Tensile) Modulus, GPa 69
44
Elongation at Break, % 1.1 to 20
14
Fatigue Strength, MPa 39 to 95
70
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
17
Shear Strength, MPa 77 to 140
110
Tensile Strength: Ultimate (UTS), MPa 120 to 240
190
Tensile Strength: Yield (Proof), MPa 46 to 220
90

Thermal Properties

Latent Heat of Fusion, J/g 400
350
Maximum Temperature: Mechanical, °C 180
100
Melting Completion (Liquidus), °C 660
600
Melting Onset (Solidus), °C 640
570
Specific Heat Capacity, J/kg-K 900
1000
Thermal Conductivity, W/m-K 170
120
Thermal Expansion, µm/m-K 24
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 44
24
Electrical Conductivity: Equal Weight (Specific), % IACS 140
130

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
12
Density, g/cm3 2.8
1.6
Embodied Carbon, kg CO2/kg material 8.2
24
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1180
980

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.6 to 19
22
Resilience: Unit (Modulus of Resilience), kJ/m3 15 to 340
92
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 50
72
Strength to Weight: Axial, points 12 to 24
32
Strength to Weight: Bending, points 20 to 31
44
Thermal Diffusivity, mm2/s 68
76
Thermal Shock Resistance, points 5.2 to 11
11

Alloy Composition

Aluminum (Al), % 96 to 99.5
1.6 to 2.6
Chromium (Cr), % 0 to 0.2
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 0.8
96.3 to 98.3
Manganese (Mn), % 0.3 to 0.8
0.1 to 0.7
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 0.4
0 to 0.2
Residuals, % 0
0 to 0.010