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EQ21A Magnesium vs. A357.0 Aluminum

EQ21A magnesium belongs to the magnesium alloys classification, while A357.0 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 A357.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 80
100
Elastic (Young's, Tensile) Modulus, GPa 44
70
Elongation at Break, % 2.4
3.7
Fatigue Strength, MPa 110
100
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 17
26
Shear Strength, MPa 150
240
Tensile Strength: Ultimate (UTS), MPa 250
350
Tensile Strength: Yield (Proof), MPa 190
270

Thermal Properties

Latent Heat of Fusion, J/g 340
500
Maximum Temperature: Mechanical, °C 160
170
Melting Completion (Liquidus), °C 640
610
Melting Onset (Solidus), °C 560
560
Specific Heat Capacity, J/kg-K 980
900
Thermal Conductivity, W/m-K 110
160
Thermal Expansion, µm/m-K 27
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
40
Electrical Conductivity: Equal Weight (Specific), % IACS 120
140

Otherwise Unclassified Properties

Base Metal Price, % relative 80
12
Density, g/cm3 1.9
2.6
Embodied Carbon, kg CO2/kg material 27
8.2
Embodied Energy, MJ/kg 210
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.6
12
Resilience: Unit (Modulus of Resilience), kJ/m3 410
520
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 63
53
Strength to Weight: Axial, points 37
38
Strength to Weight: Bending, points 47
43
Thermal Diffusivity, mm2/s 62
68
Thermal Shock Resistance, points 15
17

Alloy Composition


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Aluminum (Al), % 0
90.8 to 93
Beryllium (Be), % 0
0.040 to 0.070
Copper (Cu), % 0.050 to 0.1
0 to 0.2
Iron (Fe), % 0
0 to 0.2
Magnesium (Mg), % 93.9 to 96.8
0.4 to 0.7
Manganese (Mn), % 0
0 to 0.1
Nickel (Ni), % 0 to 0.010
0
Silicon (Si), % 0
6.5 to 7.5
Silver (Ag), % 1.3 to 1.7
0
Titanium (Ti), % 0
0.040 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