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EQ21A Magnesium vs. 6261 Aluminum

EQ21A magnesium belongs to the magnesium alloys classification, while 6261 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 6261 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 44
69
Elongation at Break, % 2.4
9.0 to 16
Fatigue Strength, MPa 110
60 to 120
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 17
26
Shear Strength, MPa 150
90 to 180
Tensile Strength: Ultimate (UTS), MPa 250
150 to 300
Tensile Strength: Yield (Proof), MPa 190
100 to 260

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
610
Specific Heat Capacity, J/kg-K 980
900
Thermal Conductivity, W/m-K 110
180
Thermal Expansion, µm/m-K 27
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
48
Electrical Conductivity: Equal Weight (Specific), % IACS 120
160

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
21 to 27
Resilience: Unit (Modulus of Resilience), kJ/m3 410
77 to 500
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 63
50
Strength to Weight: Axial, points 37
15 to 31
Strength to Weight: Bending, points 47
23 to 37
Thermal Diffusivity, mm2/s 62
75
Thermal Shock Resistance, points 15
6.5 to 13

Alloy Composition

Aluminum (Al), % 0
96.6 to 98.6
Chromium (Cr), % 0
0 to 0.1
Copper (Cu), % 0.050 to 0.1
0.15 to 0.4
Iron (Fe), % 0
0 to 0.4
Magnesium (Mg), % 93.9 to 96.8
0.7 to 1.0
Manganese (Mn), % 0
0.2 to 0.35
Nickel (Ni), % 0 to 0.010
0
Silicon (Si), % 0
0.4 to 0.7
Silver (Ag), % 1.3 to 1.7
0
Titanium (Ti), % 0
0 to 0.1
Unspecified Rare Earths, % 1.5 to 3.0
0
Zinc (Zn), % 0
0 to 0.2
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.3
0 to 0.15