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8090 Aluminum vs. 7175 Aluminum

Both 8090 aluminum and 7175 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 8090 aluminum and the bottom bar is 7175 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 67
70
Elongation at Break, % 3.5 to 13
3.8 to 5.9
Fatigue Strength, MPa 91 to 140
150 to 180
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 25
26
Tensile Strength: Ultimate (UTS), MPa 340 to 490
520 to 570
Tensile Strength: Yield (Proof), MPa 210 to 420
430 to 490

Thermal Properties

Latent Heat of Fusion, J/g 400
380
Maximum Temperature: Mechanical, °C 190
180
Melting Completion (Liquidus), °C 660
640
Melting Onset (Solidus), °C 600
480
Specific Heat Capacity, J/kg-K 960
870
Thermal Conductivity, W/m-K 95 to 160
140
Thermal Expansion, µm/m-K 24
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 20
33
Electrical Conductivity: Equal Weight (Specific), % IACS 66
99

Otherwise Unclassified Properties

Base Metal Price, % relative 18
10
Density, g/cm3 2.7
3.0
Embodied Carbon, kg CO2/kg material 8.6
8.2
Embodied Energy, MJ/kg 170
150
Embodied Water, L/kg 1160
1130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 16 to 41
18 to 29
Resilience: Unit (Modulus of Resilience), kJ/m3 340 to 1330
1310 to 1730
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
46
Strength to Weight: Axial, points 34 to 49
48 to 52
Strength to Weight: Bending, points 39 to 50
48 to 51
Thermal Diffusivity, mm2/s 36 to 60
53
Thermal Shock Resistance, points 15 to 22
23 to 25

Alloy Composition


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Aluminum (Al), % 93 to 98.4
88 to 91.4
Chromium (Cr), % 0 to 0.1
0.18 to 0.28
Copper (Cu), % 1.0 to 1.6
1.2 to 2.0
Iron (Fe), % 0 to 0.3
0 to 0.2
Lithium (Li), % 2.2 to 2.7
0
Magnesium (Mg), % 0.6 to 1.3
2.1 to 2.9
Manganese (Mn), % 0 to 0.1
0 to 0.1
Silicon (Si), % 0 to 0.2
0 to 0.15
Titanium (Ti), % 0 to 0.1
0 to 0.1
Zinc (Zn), % 0 to 0.25
5.1 to 6.1
Zirconium (Zr), % 0.040 to 0.16
0
Residuals, % 0 to 0.15
0 to 0.15