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EQ21A Magnesium vs. 443.0 Aluminum

EQ21A magnesium belongs to the magnesium alloys classification, while 443.0 aluminum belongs to the aluminum alloys. There are 31 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is EQ21A magnesium and the bottom bar is 443.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 80
41
Elastic (Young's, Tensile) Modulus, GPa 44
71
Elongation at Break, % 2.4
5.6
Fatigue Strength, MPa 110
55
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 17
27
Shear Strength, MPa 150
96
Tensile Strength: Ultimate (UTS), MPa 250
150
Tensile Strength: Yield (Proof), MPa 190
65

Thermal Properties

Latent Heat of Fusion, J/g 340
470
Maximum Temperature: Mechanical, °C 160
180
Melting Completion (Liquidus), °C 640
630
Melting Onset (Solidus), °C 560
580
Solidification (Pattern Maker's) Shrinkage, % 1.3
1.3
Specific Heat Capacity, J/kg-K 980
900
Thermal Conductivity, W/m-K 110
150
Thermal Expansion, µm/m-K 27
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
38
Electrical Conductivity: Equal Weight (Specific), % IACS 120
130

Otherwise Unclassified Properties

Base Metal Price, % relative 80
9.5
Density, g/cm3 1.9
2.7
Embodied Carbon, kg CO2/kg material 27
8.0
Embodied Energy, MJ/kg 210
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.6
6.9
Resilience: Unit (Modulus of Resilience), kJ/m3 410
30
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 63
52
Strength to Weight: Axial, points 37
16
Strength to Weight: Bending, points 47
23
Thermal Diffusivity, mm2/s 62
61
Thermal Shock Resistance, points 15
6.9

Alloy Composition


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Aluminum (Al), % 0
90.7 to 95.5
Chromium (Cr), % 0
0 to 0.25
Copper (Cu), % 0.050 to 0.1
0 to 0.6
Iron (Fe), % 0
0 to 0.8
Magnesium (Mg), % 93.9 to 96.8
0 to 0.050
Manganese (Mn), % 0
0 to 0.5
Nickel (Ni), % 0 to 0.010
0
Silicon (Si), % 0
4.5 to 6.0
Silver (Ag), % 1.3 to 1.7
0
Titanium (Ti), % 0
0 to 0.25
Unspecified Rare Earths, % 1.5 to 3.0
0
Zinc (Zn), % 0
0 to 0.5
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.3
0 to 0.35