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3003 Aluminum vs. EQ21A Magnesium

3003 aluminum belongs to the aluminum alloys classification, while EQ21A magnesium belongs to the magnesium alloys. There are 30 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 3003 aluminum and the bottom bar is EQ21A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 28 to 65
80
Elastic (Young's, Tensile) Modulus, GPa 70
44
Elongation at Break, % 1.1 to 28
2.4
Fatigue Strength, MPa 39 to 90
110
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
17
Shear Strength, MPa 68 to 130
150
Tensile Strength: Ultimate (UTS), MPa 110 to 240
250
Tensile Strength: Yield (Proof), MPa 40 to 210
190

Thermal Properties

Latent Heat of Fusion, J/g 400
340
Maximum Temperature: Mechanical, °C 180
160
Melting Completion (Liquidus), °C 650
640
Melting Onset (Solidus), °C 640
560
Specific Heat Capacity, J/kg-K 900
980
Thermal Conductivity, W/m-K 180
110
Thermal Expansion, µm/m-K 23
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 44
25
Electrical Conductivity: Equal Weight (Specific), % IACS 140
120

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
80
Density, g/cm3 2.8
1.9
Embodied Carbon, kg CO2/kg material 8.1
27
Embodied Energy, MJ/kg 150
210

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 0.95 to 63
5.6
Resilience: Unit (Modulus of Resilience), kJ/m3 11 to 300
410
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
63
Strength to Weight: Axial, points 11 to 24
37
Strength to Weight: Bending, points 18 to 30
47
Thermal Diffusivity, mm2/s 71
62
Thermal Shock Resistance, points 4.7 to 10
15

Alloy Composition

Aluminum (Al), % 96.8 to 99
0
Copper (Cu), % 0.050 to 0.2
0.050 to 0.1
Iron (Fe), % 0 to 0.7
0
Magnesium (Mg), % 0
93.9 to 96.8
Manganese (Mn), % 1.0 to 1.5
0
Nickel (Ni), % 0
0 to 0.010
Silicon (Si), % 0 to 0.6
0
Silver (Ag), % 0
1.3 to 1.7
Unspecified Rare Earths, % 0
1.5 to 3.0
Zinc (Zn), % 0 to 0.1
0
Zirconium (Zr), % 0
0.4 to 1.0
Residuals, % 0
0 to 0.3