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6061 Aluminum vs. EN-MC21210 Magnesium

6061 aluminum belongs to the aluminum alloys classification, while EN-MC21210 magnesium belongs to the magnesium alloys. There are 30 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is 6061 aluminum and the bottom bar is EN-MC21210 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
44
Elongation at Break, % 3.4 to 20
14
Fatigue Strength, MPa 58 to 110
70
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
17
Shear Strength, MPa 84 to 210
110
Tensile Strength: Ultimate (UTS), MPa 130 to 410
190
Tensile Strength: Yield (Proof), MPa 76 to 370
90

Thermal Properties

Latent Heat of Fusion, J/g 400
350
Maximum Temperature: Mechanical, °C 170
100
Melting Completion (Liquidus), °C 650
600
Melting Onset (Solidus), °C 580
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 43
24
Electrical Conductivity: Equal Weight (Specific), % IACS 140
130

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
12
Density, g/cm3 2.7
1.6
Embodied Carbon, kg CO2/kg material 8.3
24
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1180
980

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.8 to 81
22
Resilience: Unit (Modulus of Resilience), kJ/m3 42 to 1000
92
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 50
72
Strength to Weight: Axial, points 13 to 42
32
Strength to Weight: Bending, points 21 to 45
44
Thermal Diffusivity, mm2/s 68
76
Thermal Shock Resistance, points 5.7 to 18
11

Alloy Composition

Aluminum (Al), % 95.9 to 98.6
1.6 to 2.6
Chromium (Cr), % 0.040 to 0.35
0
Copper (Cu), % 0.15 to 0.4
0 to 0.010
Iron (Fe), % 0 to 0.7
0 to 0.0050
Magnesium (Mg), % 0.8 to 1.2
96.3 to 98.3
Manganese (Mn), % 0 to 0.15
0.1 to 0.7
Nickel (Ni), % 0
0 to 0.0020
Silicon (Si), % 0.4 to 0.8
0 to 0.1
Titanium (Ti), % 0 to 0.15
0
Zinc (Zn), % 0 to 0.25
0 to 0.2
Residuals, % 0
0 to 0.010