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8090 Aluminum vs. ZE41A Magnesium

8090 aluminum belongs to the aluminum alloys classification, while ZE41A magnesium belongs to the magnesium 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 8090 aluminum and the bottom bar is ZE41A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 67
45
Elongation at Break, % 3.5 to 13
3.3
Fatigue Strength, MPa 91 to 140
98
Fracture Toughness, MPa-m1/2 23 to 130
16
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 25
18
Tensile Strength: Ultimate (UTS), MPa 340 to 490
210
Tensile Strength: Yield (Proof), MPa 210 to 420
140

Thermal Properties

Latent Heat of Fusion, J/g 400
330
Maximum Temperature: Mechanical, °C 190
150
Melting Completion (Liquidus), °C 660
640
Melting Onset (Solidus), °C 600
540
Specific Heat Capacity, J/kg-K 960
970
Thermal Conductivity, W/m-K 95 to 160
110
Thermal Expansion, µm/m-K 24
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 20
27
Electrical Conductivity: Equal Weight (Specific), % IACS 66
130

Otherwise Unclassified Properties

Base Metal Price, % relative 18
18
Density, g/cm3 2.7
1.9
Embodied Carbon, kg CO2/kg material 8.6
24
Embodied Energy, MJ/kg 170
170
Embodied Water, L/kg 1160
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 16 to 41
6.1
Resilience: Unit (Modulus of Resilience), kJ/m3 340 to 1330
220
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
63
Strength to Weight: Axial, points 34 to 49
31
Strength to Weight: Bending, points 39 to 50
41
Thermal Diffusivity, mm2/s 36 to 60
59
Thermal Shock Resistance, points 15 to 22
12

Alloy Composition

Aluminum (Al), % 93 to 98.4
0
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 1.0 to 1.6
0 to 0.1
Iron (Fe), % 0 to 0.3
0
Lithium (Li), % 2.2 to 2.7
0
Magnesium (Mg), % 0.6 to 1.3
91.7 to 95.4
Manganese (Mn), % 0 to 0.1
0 to 0.15
Nickel (Ni), % 0
0 to 0.010
Silicon (Si), % 0 to 0.2
0
Titanium (Ti), % 0 to 0.1
0
Unspecified Rare Earths, % 0
0.75 to 1.8
Zinc (Zn), % 0 to 0.25
3.5 to 5.0
Zirconium (Zr), % 0.040 to 0.16
0.4 to 1.0
Residuals, % 0
0 to 0.3