2024-O Aluminum
2024-O aluminum is 2024 aluminum in the annealed condition. It has the lowest strength compared to the other variants of 2024 aluminum. The graph bars on the material properties cards below compare 2024-O aluminum to: 2000-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
49
Elastic (Young's, Tensile) Modulus
71 GPa 10 x 106 psi
Elongation at Break
15 %
Fatigue Strength
90 MPa 13 x 103 psi
Poisson's Ratio
0.33
Shear Modulus
27 GPa 3.9 x 106 psi
Shear Strength
130 MPa 18 x 103 psi
Tensile Strength: Ultimate (UTS)
200 MPa 29 x 103 psi
Tensile Strength: Yield (Proof)
100 MPa 14 x 103 psi
Thermal Properties
Latent Heat of Fusion
390 J/g
Maximum Temperature: Mechanical
200 °C 390 °F
Melting Completion (Liquidus)
640 °C 1180 °F
Melting Onset (Solidus)
500 °C 930 °F
Specific Heat Capacity
880 J/kg-K 0.21 BTU/lb-°F
Thermal Conductivity
120 W/m-K 70 BTU/h-ft-°F
Thermal Expansion
23 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
30 % IACS
Electrical Conductivity: Equal Weight (Specific)
90 % IACS
Otherwise Unclassified Properties
Base Metal Price
11 % relative
Calomel Potential
-600 mV
Density
3.0 g/cm3 190 lb/ft3
Embodied Carbon
8.3 kg CO2/kg material
Embodied Energy
150 MJ/kg 65 x 103 BTU/lb
Embodied Water
1140 L/kg 140 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
24 MJ/m3
Resilience: Unit (Modulus of Resilience)
70 kJ/m3
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
46 points
Strength to Weight: Axial
18 points
Strength to Weight: Bending
25 points
Thermal Diffusivity
46 mm2/s
Thermal Shock Resistance
8.6 points
Alloy Composition
| Al | 90.7 to 94.7 | |
| Cu | 3.8 to 4.9 | |
| Mg | 1.2 to 1.8 | |
| Mn | 0.3 to 0.9 | |
| Si | 0 to 0.5 | |
| Fe | 0 to 0.5 | |
| Zn | 0 to 0.25 | |
| Zr | 0 to 0.2 | |
| Ti | 0 to 0.15 | |
| Cr | 0 to 0.1 | |
| res. | 0 to 0.15 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Further Reading
ASTM B210: Standard Specification for Aluminum and Aluminum-Alloy Drawn Seamless Tubes
ASTM B211: Standard Specification for Aluminum and Aluminum-Alloy Bar, Rod, and Wire
ASTM B221: Standard Specification for Aluminum and Aluminum-Alloy Extruded Bars, Rods, Wire, Profiles, and Tubes
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
ASTM B209: Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate
EN 755-2: Aluminium and aluminium alloys. Extruded rod/bar, tube and profiles. Mechanical properties
EN 485-2: Aluminium and aluminium alloys. Sheet, strip and plate. Mechanical properties
Aluminum Standards and Data, Aluminum Association Inc., 2013
ISO 6361-2: Wrought aluminium and aluminium alloys - Sheets, strips and plates - Part 2: Mechanical properties