6063A-O Aluminum
6063A-O aluminum is 6063A aluminum in the annealed condition. It has the lowest strength and highest ductility compared to the other variants of 6063A aluminum. The graph bars on the material properties cards below compare 6063A-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
Elastic (Young's, Tensile) Modulus
68 GPa 9.9 x 106 psi
Elongation at Break
18 %
Fatigue Strength
58 MPa 8.4 x 103 psi
Poisson's Ratio
0.33
Shear Modulus
26 GPa 3.7 x 106 psi
Shear Strength
78 MPa 11 x 103 psi
Tensile Strength: Ultimate (UTS)
130 MPa 18 x 103 psi
Tensile Strength: Yield (Proof)
55 MPa 7.9 x 103 psi
Thermal Properties
Latent Heat of Fusion
400 J/g
Maximum Temperature: Mechanical
160 °C 320 °F
Melting Completion (Liquidus)
640 °C 1190 °F
Melting Onset (Solidus)
620 °C 1160 °F
Specific Heat Capacity
900 J/kg-K 0.22 BTU/lb-°F
Thermal Conductivity
200 W/m-K 120 BTU/h-ft-°F
Thermal Expansion
23 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
53 % IACS
Electrical Conductivity: Equal Weight (Specific)
180 % IACS
Otherwise Unclassified Properties
Base Metal Price
9.5 % relative
Density
2.7 g/cm3 170 lb/ft3
Embodied Carbon
8.3 kg CO2/kg material
Embodied Energy
150 MJ/kg 66 x 103 BTU/lb
Embodied Water
1190 L/kg 140 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
18 MJ/m3
Resilience: Unit (Modulus of Resilience)
22 kJ/m3
Stiffness to Weight: Axial
14 points
Stiffness to Weight: Bending
50 points
Strength to Weight: Axial
13 points
Strength to Weight: Bending
21 points
Thermal Diffusivity
83 mm2/s
Thermal Shock Resistance
5.6 points
Alloy Composition
| Al | 97.5 to 99 | |
| Mg | 0.6 to 0.9 | |
| Si | 0.3 to 0.6 | |
| Fe | 0.15 to 0.35 | |
| Mn | 0 to 0.15 | |
| Zn | 0 to 0.15 | |
| Ti | 0 to 0.1 | |
| Cu | 0 to 0.1 | |
| Cr | 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
EN 754-2: Aluminium and aluminium alloys. Cold drawn rod/bar and tube. Mechanical properties
EN 755-2: Aluminium and aluminium alloys. Extruded rod/bar, tube and profiles. Mechanical properties
EN 573-3: Aluminium and aluminium alloys. Chemical composition and form of wrought products. Chemical composition and form of products
Properties and Selection: Nonferrous Alloys and Special-Purpose Materials, ASM Handbook vol. 2, ASM International, 1993
CRC Materials Science and Engineering Handbook, 4th ed., James F. Shackelford et al. (editors), 2015