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EQ21A Magnesium vs. 6101B Aluminum

EQ21A magnesium belongs to the magnesium alloys classification, while 6101B aluminum belongs to the aluminum alloys. There are 29 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is EQ21A magnesium and the bottom bar is 6101B aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 44
68
Elongation at Break, % 2.4
9.1 to 13
Fatigue Strength, MPa 110
62 to 70
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 17
26
Shear Strength, MPa 150
120 to 150
Tensile Strength: Ultimate (UTS), MPa 250
190 to 250
Tensile Strength: Yield (Proof), MPa 190
140 to 180

Thermal Properties

Latent Heat of Fusion, J/g 340
400
Maximum Temperature: Mechanical, °C 160
160
Melting Completion (Liquidus), °C 640
640
Melting Onset (Solidus), °C 560
630
Specific Heat Capacity, J/kg-K 980
900
Thermal Conductivity, W/m-K 110
210
Thermal Expansion, µm/m-K 27
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
57
Electrical Conductivity: Equal Weight (Specific), % IACS 120
190

Otherwise Unclassified Properties

Base Metal Price, % relative 80
9.5
Density, g/cm3 1.9
2.7
Embodied Carbon, kg CO2/kg material 27
8.3
Embodied Energy, MJ/kg 210
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.6
20 to 23
Resilience: Unit (Modulus of Resilience), kJ/m3 410
140 to 240
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 63
50
Strength to Weight: Axial, points 37
20 to 25
Strength to Weight: Bending, points 47
27 to 32
Thermal Diffusivity, mm2/s 62
87
Thermal Shock Resistance, points 15
8.5 to 11

Alloy Composition

Aluminum (Al), % 0
98.2 to 99.3
Copper (Cu), % 0.050 to 0.1
0 to 0.050
Iron (Fe), % 0
0.1 to 0.3
Magnesium (Mg), % 93.9 to 96.8
0.35 to 0.6
Manganese (Mn), % 0
0 to 0.050
Nickel (Ni), % 0 to 0.010
0
Silicon (Si), % 0
0.3 to 0.6
Silver (Ag), % 1.3 to 1.7
0
Unspecified Rare Earths, % 1.5 to 3.0
0
Zinc (Zn), % 0
0 to 0.1
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.3
0 to 0.1