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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

Aluminum (Al)Al 90.7 to 94.7
Copper (Cu)Cu 3.8 to 4.9
Magnesium (Mg)Mg 1.2 to 1.8
Manganese (Mn)Mn 0.3 to 0.9
Silicon (Si)Si 0 to 0.5
Iron (Fe)Fe 0 to 0.5
Zinc (Zn)Zn 0 to 0.25
Zirconium (Zr)Zr 0 to 0.2
Titanium (Ti)Ti 0 to 0.15
Chromium (Cr)Cr 0 to 0.1
Residualsres. 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