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EQ21A Magnesium vs. C355.0 Aluminum

EQ21A magnesium belongs to the magnesium alloys classification, while C355.0 aluminum belongs to the aluminum alloys. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is EQ21A magnesium and the bottom bar is C355.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 80
86 to 90
Elastic (Young's, Tensile) Modulus, GPa 44
70
Elongation at Break, % 2.4
2.7 to 3.8
Fatigue Strength, MPa 110
76 to 84
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 17
26
Tensile Strength: Ultimate (UTS), MPa 250
290 to 310
Tensile Strength: Yield (Proof), MPa 190
200 to 230

Thermal Properties

Latent Heat of Fusion, J/g 340
470
Maximum Temperature: Mechanical, °C 160
170
Melting Completion (Liquidus), °C 640
620
Melting Onset (Solidus), °C 560
570
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
39
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
7.5 to 9.8
Resilience: Unit (Modulus of Resilience), kJ/m3 410
290 to 380
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 63
51
Strength to Weight: Axial, points 37
30 to 32
Strength to Weight: Bending, points 47
36 to 37
Thermal Diffusivity, mm2/s 62
60
Thermal Shock Resistance, points 15
13 to 14

Alloy Composition


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Aluminum (Al), % 0
91.7 to 94.1
Copper (Cu), % 0.050 to 0.1
1.0 to 1.5
Iron (Fe), % 0
0 to 0.2
Magnesium (Mg), % 93.9 to 96.8
0.4 to 0.6
Manganese (Mn), % 0
0 to 0.1
Nickel (Ni), % 0 to 0.010
0
Silicon (Si), % 0
4.5 to 5.5
Silver (Ag), % 1.3 to 1.7
0
Titanium (Ti), % 0
0 to 0.2
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 0.15