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1085 Aluminum vs. 6018 Aluminum

Both 1085 aluminum and 6018 aluminum are aluminum alloys. They have a very high 96% of their average alloy composition in common.

For each property being compared, the top bar is 1085 aluminum and the bottom bar is 6018 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
69
Elongation at Break, % 4.5 to 39
9.0 to 9.1
Fatigue Strength, MPa 22 to 49
85 to 89
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
26
Shear Strength, MPa 48 to 79
170 to 180
Tensile Strength: Ultimate (UTS), MPa 73 to 140
290 to 300
Tensile Strength: Yield (Proof), MPa 17 to 120
220 to 230

Thermal Properties

Latent Heat of Fusion, J/g 400
400
Maximum Temperature: Mechanical, °C 170
160
Melting Completion (Liquidus), °C 640
640
Melting Onset (Solidus), °C 640
570
Specific Heat Capacity, J/kg-K 900
890
Thermal Conductivity, W/m-K 230
170
Thermal Expansion, µm/m-K 23
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 61
44
Electrical Conductivity: Equal Weight (Specific), % IACS 200
140

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
10
Density, g/cm3 2.7
2.9
Embodied Carbon, kg CO2/kg material 8.3
8.2
Embodied Energy, MJ/kg 160
150
Embodied Water, L/kg 1200
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.8 to 21
24 to 25
Resilience: Unit (Modulus of Resilience), kJ/m3 2.1 to 110
360 to 380
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
48
Strength to Weight: Axial, points 7.5 to 14
28 to 29
Strength to Weight: Bending, points 14 to 22
34 to 35
Thermal Diffusivity, mm2/s 94
65
Thermal Shock Resistance, points 3.3 to 6.1
13

Alloy Composition

Aluminum (Al), % 99.85 to 100
93.1 to 97.8
Bismuth (Bi), % 0
0.4 to 0.7
Chromium (Cr), % 0
0 to 0.1
Copper (Cu), % 0 to 0.030
0.15 to 0.4
Gallium (Ga), % 0 to 0.030
0
Iron (Fe), % 0 to 0.12
0 to 0.7
Lead (Pb), % 0
0.4 to 1.2
Magnesium (Mg), % 0 to 0.020
0.6 to 1.2
Manganese (Mn), % 0 to 0.020
0.3 to 0.8
Silicon (Si), % 0 to 0.1
0.5 to 1.2
Titanium (Ti), % 0 to 0.020
0 to 0.2
Vanadium (V), % 0 to 0.050
0
Zinc (Zn), % 0 to 0.030
0 to 0.3
Residuals, % 0
0 to 0.15