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6018-T6 Aluminum vs. 6063-T6 Aluminum

Both 6018-T6 aluminum and 6063-T6 aluminum are aluminum alloys. Both are furnished in the T6 temper. They have a very high 97% of their average alloy composition in common. There are 30 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 6018-T6 aluminum and the bottom bar is 6063-T6 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
68
Elongation at Break, % 9.0
11
Fatigue Strength, MPa 89
70
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
26
Shear Strength, MPa 170
150
Tensile Strength: Ultimate (UTS), MPa 290
240
Tensile Strength: Yield (Proof), MPa 230
210

Thermal Properties

Latent Heat of Fusion, J/g 400
400
Maximum Temperature: Mechanical, °C 160
160
Melting Completion (Liquidus), °C 640
650
Melting Onset (Solidus), °C 570
620
Specific Heat Capacity, J/kg-K 890
900
Thermal Conductivity, W/m-K 170
200
Thermal Expansion, µm/m-K 23
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 44
53
Electrical Conductivity: Equal Weight (Specific), % IACS 140
180

Otherwise Unclassified Properties

Base Metal Price, % relative 10
9.5
Density, g/cm3 2.9
2.7
Embodied Carbon, kg CO2/kg material 8.2
8.3
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1180
1190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 24
25
Resilience: Unit (Modulus of Resilience), kJ/m3 380
320
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 48
50
Strength to Weight: Axial, points 28
25
Strength to Weight: Bending, points 34
32
Thermal Diffusivity, mm2/s 65
82
Thermal Shock Resistance, points 13
11

Alloy Composition

Aluminum (Al), % 93.1 to 97.8
97.5 to 99.4
Bismuth (Bi), % 0.4 to 0.7
0
Chromium (Cr), % 0 to 0.1
0 to 0.1
Copper (Cu), % 0.15 to 0.4
0 to 0.1
Iron (Fe), % 0 to 0.7
0 to 0.35
Lead (Pb), % 0.4 to 1.2
0
Magnesium (Mg), % 0.6 to 1.2
0.45 to 0.9
Manganese (Mn), % 0.3 to 0.8
0 to 0.1
Silicon (Si), % 0.5 to 1.2
0.2 to 0.6
Titanium (Ti), % 0 to 0.2
0 to 0.1
Zinc (Zn), % 0 to 0.3
0 to 0.1
Residuals, % 0
0 to 0.15