6065-T9 Aluminum
6065-T9 aluminum is 6065 aluminum in the T9 temper. To achieve this temper, the metal is solution heat-treated, artificially aged, then strain hardened. It has the highest strength and lowest ductility compared to the other variants of 6065 aluminum.
The graph bars on the material properties cards below compare 6065-T9 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
Elastic (Young's, Tensile) Modulus
68 GPa 9.9 x 106 psi
Elongation at Break
4.5 %
Fatigue Strength
96 MPa 14 x 103 psi
Poisson's Ratio
0.33
Shear Modulus
26 GPa 3.7 x 106 psi
Shear Strength
230 MPa 34 x 103 psi
Tensile Strength: Ultimate (UTS)
400 MPa 58 x 103 psi
Tensile Strength: Yield (Proof)
380 MPa 55 x 103 psi
Thermal Properties
Latent Heat of Fusion
400 J/g
Maximum Temperature: Mechanical
180 °C 350 °F
Melting Completion (Liquidus)
640 °C 1180 °F
Melting Onset (Solidus)
590 °C 1090 °F
Specific Heat Capacity
890 J/kg-K 0.21 BTU/lb-°F
Thermal Conductivity
170 W/m-K 97 BTU/h-ft-°F
Thermal Expansion
23 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
43 % IACS
Electrical Conductivity: Equal Weight (Specific)
140 % IACS
Otherwise Unclassified Properties
Base Metal Price
11 % relative
Density
2.8 g/cm3 170 lb/ft3
Embodied Carbon
8.4 kg CO2/kg material
Embodied Energy
150 MJ/kg 66 x 103 BTU/lb
Embodied Water
1200 L/kg 140 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
18 MJ/m3
Resilience: Unit (Modulus of Resilience)
1040 kJ/m3
Stiffness to Weight: Axial
14 points
Stiffness to Weight: Bending
49 points
Strength to Weight: Axial
40 points
Strength to Weight: Bending
43 points
Thermal Diffusivity
67 mm2/s
Thermal Shock Resistance
18 points
Alloy Composition
| Al | 94.4 to 98.2 | |
| Bi | 0.5 to 1.5 | |
| Mg | 0.8 to 1.2 | |
| Si | 0.4 to 0.8 | |
| Fe | 0 to 0.7 | |
| Cu | 0.15 to 0.4 | |
| Zn | 0 to 0.25 | |
| Mn | 0 to 0.15 | |
| Cr | 0 to 0.15 | |
| Zr | 0 to 0.15 | |
| Ti | 0 to 0.1 | |
| Pb | 0 to 0.050 | |
| res. | 0 to 0.15 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Further Reading
Handbook of Aluminum vol. 2: Alloy Production and Materials Manufacturing, George Totten and D. Scott MacKenzie (editors), 2003
EN 754-2: Aluminium and aluminium alloys. Cold drawn rod/bar and tube. Mechanical properties
Aluminum: Properties and Physical Metallurgy, John E. Hatch (editor), 1984
EN 573-3: Aluminium and aluminium alloys. Chemical composition and form of wrought products. Chemical composition and form of products