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7050 Aluminum vs. 8090 Aluminum

Both 7050 aluminum and 8090 aluminum are aluminum alloys. They have a moderately high 92% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is 7050 aluminum and the bottom bar is 8090 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
67
Elongation at Break, % 2.2 to 12
3.5 to 13
Fatigue Strength, MPa 130 to 210
91 to 140
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 26
25
Tensile Strength: Ultimate (UTS), MPa 490 to 570
340 to 490
Tensile Strength: Yield (Proof), MPa 390 to 500
210 to 420

Thermal Properties

Latent Heat of Fusion, J/g 370
400
Maximum Temperature: Mechanical, °C 190
190
Melting Completion (Liquidus), °C 630
660
Melting Onset (Solidus), °C 490
600
Specific Heat Capacity, J/kg-K 860
960
Thermal Conductivity, W/m-K 140
95 to 160
Thermal Expansion, µm/m-K 24
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 35
20
Electrical Conductivity: Equal Weight (Specific), % IACS 100
66

Otherwise Unclassified Properties

Base Metal Price, % relative 10
18
Density, g/cm3 3.1
2.7
Embodied Carbon, kg CO2/kg material 8.2
8.6
Embodied Energy, MJ/kg 150
170
Embodied Water, L/kg 1120
1160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 10 to 55
16 to 41
Resilience: Unit (Modulus of Resilience), kJ/m3 1110 to 1760
340 to 1330
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 45
50
Strength to Weight: Axial, points 45 to 51
34 to 49
Strength to Weight: Bending, points 45 to 50
39 to 50
Thermal Diffusivity, mm2/s 54
36 to 60
Thermal Shock Resistance, points 21 to 25
15 to 22

Alloy Composition

Aluminum (Al), % 87.3 to 92.1
93 to 98.4
Chromium (Cr), % 0 to 0.040
0 to 0.1
Copper (Cu), % 2.0 to 2.6
1.0 to 1.6
Iron (Fe), % 0 to 0.15
0 to 0.3
Lithium (Li), % 0
2.2 to 2.7
Magnesium (Mg), % 1.9 to 2.6
0.6 to 1.3
Manganese (Mn), % 0 to 0.1
0 to 0.1
Silicon (Si), % 0 to 0.12
0 to 0.2
Titanium (Ti), % 0 to 0.060
0 to 0.1
Zinc (Zn), % 5.7 to 6.7
0 to 0.25
Zirconium (Zr), % 0.080 to 0.15
0.040 to 0.16
Residuals, % 0
0 to 0.15