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EQ21A Magnesium vs. EN AC-21200 Aluminum

EQ21A magnesium belongs to the magnesium alloys classification, while EN AC-21200 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 EN AC-21200 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 80
120 to 130
Elastic (Young's, Tensile) Modulus, GPa 44
71
Elongation at Break, % 2.4
3.9 to 6.2
Fatigue Strength, MPa 110
110 to 130
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 17
27
Tensile Strength: Ultimate (UTS), MPa 250
410 to 440
Tensile Strength: Yield (Proof), MPa 190
270 to 360

Thermal Properties

Latent Heat of Fusion, J/g 340
390
Maximum Temperature: Mechanical, °C 160
170
Melting Completion (Liquidus), °C 640
660
Melting Onset (Solidus), °C 560
550
Specific Heat Capacity, J/kg-K 980
880
Thermal Conductivity, W/m-K 110
130
Thermal Expansion, µm/m-K 27
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
34
Electrical Conductivity: Equal Weight (Specific), % IACS 120
100

Otherwise Unclassified Properties

Base Metal Price, % relative 80
10
Density, g/cm3 1.9
3.0
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
16 to 22
Resilience: Unit (Modulus of Resilience), kJ/m3 410
500 to 930
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 63
46
Strength to Weight: Axial, points 37
38 to 40
Strength to Weight: Bending, points 47
41 to 43
Thermal Diffusivity, mm2/s 62
49
Thermal Shock Resistance, points 15
18 to 19

Alloy Composition


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Aluminum (Al), % 0
93.3 to 95.7
Copper (Cu), % 0.050 to 0.1
4.0 to 5.0
Iron (Fe), % 0
0 to 0.2
Lead (Pb), % 0
0 to 0.030
Magnesium (Mg), % 93.9 to 96.8
0.15 to 0.5
Manganese (Mn), % 0
0.2 to 0.5
Nickel (Ni), % 0 to 0.010
0 to 0.050
Silicon (Si), % 0
0 to 0.1
Silver (Ag), % 1.3 to 1.7
0
Tin (Sn), % 0
0 to 0.030
Titanium (Ti), % 0
0 to 0.1
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