6066-T451 Aluminum
6066-T451 aluminum is 6066 aluminum in the T451 temper. To achieve this temper, the metal is solution heat-treated, stress relieved, then naturally aged. The stress relief is accomplished by stretching the metal by an amount that depends on the type of standard wrought product being made (sheet, plate, bar, or forging).
The graph bars on the material properties cards below compare 6066-T451 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
90
Elastic (Young's, Tensile) Modulus
70 GPa 10 x 106 psi
Elongation at Break
17 %
Fatigue Strength
110 MPa 16 x 103 psi
Poisson's Ratio
0.33
Shear Modulus
26 GPa 3.8 x 106 psi
Shear Strength
200 MPa 29 x 103 psi
Tensile Strength: Ultimate (UTS)
360 MPa 52 x 103 psi
Tensile Strength: Yield (Proof)
210 MPa 30 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)
52 MJ/m3
Resilience: Unit (Modulus of Resilience)
300 kJ/m3
Stiffness to Weight: Axial
14 points
Stiffness to Weight: Bending
49 points
Strength to Weight: Axial
36 points
Strength to Weight: Bending
40 points
Thermal Diffusivity
61 mm2/s
Thermal Shock Resistance
16 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