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1230A Aluminum vs. EQ21A Magnesium

1230A aluminum belongs to the aluminum alloys classification, while EQ21A magnesium belongs to the magnesium 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 1230A aluminum and the bottom bar is EQ21A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
44
Elongation at Break, % 4.5 to 34
2.4
Fatigue Strength, MPa 35 to 74
110
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
17
Shear Strength, MPa 59 to 99
150
Tensile Strength: Ultimate (UTS), MPa 89 to 170
250
Tensile Strength: Yield (Proof), MPa 29 to 150
190

Thermal Properties

Latent Heat of Fusion, J/g 400
340
Maximum Temperature: Mechanical, °C 170
160
Melting Completion (Liquidus), °C 640
640
Melting Onset (Solidus), °C 640
560
Specific Heat Capacity, J/kg-K 900
980
Thermal Conductivity, W/m-K 230
110
Thermal Expansion, µm/m-K 23
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 60
25
Electrical Conductivity: Equal Weight (Specific), % IACS 200
120

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
80
Density, g/cm3 2.7
1.9
Embodied Carbon, kg CO2/kg material 8.2
27
Embodied Energy, MJ/kg 150
210

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.4 to 23
5.6
Resilience: Unit (Modulus of Resilience), kJ/m3 5.9 to 150
410
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
63
Strength to Weight: Axial, points 9.1 to 17
37
Strength to Weight: Bending, points 16 to 25
47
Thermal Diffusivity, mm2/s 93
62
Thermal Shock Resistance, points 4.0 to 7.6
15

Alloy Composition


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Aluminum (Al), % 99.3 to 100
0
Copper (Cu), % 0 to 0.1
0.050 to 0.1
Iron (Fe), % 0 to 0.7
0
Magnesium (Mg), % 0 to 0.050
93.9 to 96.8
Manganese (Mn), % 0 to 0.050
0
Nickel (Ni), % 0
0 to 0.010
Silicon (Si), % 0 to 0.7
0
Silver (Ag), % 0
1.3 to 1.7
Unspecified Rare Earths, % 0
1.5 to 3.0
Zinc (Zn), % 0 to 0.050
0
Zirconium (Zr), % 0
0.4 to 1.0
Residuals, % 0
0 to 0.3