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8090 Aluminum vs. 6351 Aluminum

Both 8090 aluminum and 6351 aluminum are aluminum alloys. They have a very high 97% 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 6351 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 67
69
Elongation at Break, % 3.5 to 13
7.8 to 18
Fatigue Strength, MPa 91 to 140
79 to 130
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 25
26
Tensile Strength: Ultimate (UTS), MPa 340 to 490
140 to 310
Tensile Strength: Yield (Proof), MPa 210 to 420
95 to 270

Thermal Properties

Latent Heat of Fusion, J/g 400
410
Maximum Temperature: Mechanical, °C 190
160
Melting Completion (Liquidus), °C 660
650
Melting Onset (Solidus), °C 600
570
Specific Heat Capacity, J/kg-K 960
900
Thermal Conductivity, W/m-K 95 to 160
180
Thermal Expansion, µm/m-K 24
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 20
46
Electrical Conductivity: Equal Weight (Specific), % IACS 66
150

Otherwise Unclassified Properties

Base Metal Price, % relative 18
9.5
Density, g/cm3 2.7
2.7
Embodied Carbon, kg CO2/kg material 8.6
8.3
Embodied Energy, MJ/kg 170
150
Embodied Water, L/kg 1160
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 16 to 41
20 to 38
Resilience: Unit (Modulus of Resilience), kJ/m3 340 to 1330
65 to 540
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
50
Strength to Weight: Axial, points 34 to 49
14 to 32
Strength to Weight: Bending, points 39 to 50
22 to 38
Thermal Diffusivity, mm2/s 36 to 60
72
Thermal Shock Resistance, points 15 to 22
6.1 to 14

Alloy Composition


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Aluminum (Al), % 93 to 98.4
96 to 98.5
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 to 0.5
Lithium (Li), % 2.2 to 2.7
0
Magnesium (Mg), % 0.6 to 1.3
0.4 to 0.8
Manganese (Mn), % 0 to 0.1
0.4 to 0.8
Silicon (Si), % 0 to 0.2
0.7 to 1.3
Titanium (Ti), % 0 to 0.1
0 to 0.2
Zinc (Zn), % 0 to 0.25
0 to 0.2
Zirconium (Zr), % 0.040 to 0.16
0
Residuals, % 0 to 0.15
0 to 0.15