6066-O Aluminum
6066-O aluminum is 6066 aluminum in the annealed condition. It has the lowest strength compared to the other variants of 6066 aluminum. The graph bars on the material properties cards below compare 6066-O aluminum to: 6000-series alloys (top), all aluminum alloys (middle), and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it's 50% of the highest, and so on.
Mechanical Properties
Brinell Hardness
43
Elastic (Young's, Tensile) Modulus
70 GPa 10 x 106 psi
Elongation at Break
17 %
Fatigue Strength
97 MPa 14 x 103 psi
Poisson's Ratio
0.33
Shear Modulus
26 GPa 3.8 x 106 psi
Shear Strength
95 MPa 14 x 103 psi
Tensile Strength: Ultimate (UTS)
160 MPa 23 x 103 psi
Tensile Strength: Yield (Proof)
93 MPa 13 x 103 psi
Thermal Properties
Latent Heat of Fusion
410 J/g
Maximum Temperature: Mechanical
170 °C 330 °F
Melting Completion (Liquidus)
650 °C 1190 °F
Melting Onset (Solidus)
560 °C 1040 °F
Specific Heat Capacity
890 J/kg-K 0.21 BTU/lb-°F
Thermal Conductivity
150 W/m-K 88 BTU/h-ft-°F
Thermal Expansion
23 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
40 % IACS
Electrical Conductivity: Equal Weight (Specific)
130 % IACS
Otherwise Unclassified Properties
Base Metal Price
9.5 % relative
Density
2.8 g/cm3 170 lb/ft3
Embodied Carbon
8.3 kg CO2/kg material
Embodied Energy
150 MJ/kg 65 x 103 BTU/lb
Embodied Water
1160 L/kg 140 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
23 MJ/m3
Resilience: Unit (Modulus of Resilience)
61 kJ/m3
Stiffness to Weight: Axial
14 points
Stiffness to Weight: Bending
49 points
Strength to Weight: Axial
16 points
Strength to Weight: Bending
23 points
Thermal Diffusivity
61 mm2/s
Thermal Shock Resistance
6.9 points
Alloy Composition
| Al | 93 to 97 | |
| Si | 0.9 to 1.8 | |
| Mg | 0.8 to 1.4 | |
| Cu | 0.7 to 1.2 | |
| Mn | 0.6 to 1.1 | |
| Fe | 0 to 0.5 | |
| Cr | 0 to 0.4 | |
| Zn | 0 to 0.25 | |
| Ti | 0 to 0.2 | |
| res. | 0 to 0.15 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Further Reading
ASTM B221: Standard Specification for Aluminum and Aluminum-Alloy Extruded Bars, Rods, Wire, Profiles, and Tubes
Handbook of Aluminum Bonding Technology and Data, J. D. Minford, 1993
Aluminum Standards and Data, Aluminum Association Inc., 2013