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8090 Aluminum vs. ZK61A Magnesium

8090 aluminum belongs to the aluminum alloys classification, while ZK61A magnesium belongs to the magnesium alloys. There are 29 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is 8090 aluminum and the bottom bar is ZK61A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 67
46
Elongation at Break, % 3.5 to 13
5.8 to 7.1
Fatigue Strength, MPa 91 to 140
120 to 140
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 25
18
Tensile Strength: Ultimate (UTS), MPa 340 to 490
290 to 310
Tensile Strength: Yield (Proof), MPa 210 to 420
180 to 200

Thermal Properties

Latent Heat of Fusion, J/g 400
330
Maximum Temperature: Mechanical, °C 190
120
Melting Completion (Liquidus), °C 660
640
Melting Onset (Solidus), °C 600
530
Specific Heat Capacity, J/kg-K 960
960
Thermal Conductivity, W/m-K 95 to 160
120
Thermal Expansion, µm/m-K 24
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 20
29
Electrical Conductivity: Equal Weight (Specific), % IACS 66
130

Otherwise Unclassified Properties

Base Metal Price, % relative 18
13
Density, g/cm3 2.7
1.9
Embodied Carbon, kg CO2/kg material 8.6
23
Embodied Energy, MJ/kg 170
160
Embodied Water, L/kg 1160
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 16 to 41
15 to 19
Resilience: Unit (Modulus of Resilience), kJ/m3 340 to 1330
370 to 420
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
62
Strength to Weight: Axial, points 34 to 49
42 to 45
Strength to Weight: Bending, points 39 to 50
50 to 53
Thermal Diffusivity, mm2/s 36 to 60
65
Thermal Shock Resistance, points 15 to 22
17 to 18

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
92.1 to 93.9
Manganese (Mn), % 0 to 0.1
0
Nickel (Ni), % 0
0 to 0.010
Silicon (Si), % 0 to 0.2
0
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 0 to 0.25
5.5 to 6.5
Zirconium (Zr), % 0.040 to 0.16
0.6 to 1.0
Residuals, % 0
0 to 0.3