224.0 Cast Aluminum
224.0 aluminum is an aluminum alloy formulated for casting. 224.0 is the Aluminum Association (AA) designation for this material. Additionally, the UNS number is A02240.
The properties of 224.0 aluminum include two common variations. This page shows summary ranges across both of them. For more specific values, follow the links immediately below. The graph bars on the material properties cards further below compare 224.0 aluminum to: ANSI/AA cast aluminums (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
71 GPa 10 x 106 psi
Elongation at Break
4.0 to 10 %
Fatigue Strength
86 to 120 MPa 12 to 18 x 103 psi
Poisson's Ratio
0.33
Shear Modulus
27 GPa 3.9 x 106 psi
Tensile Strength: Ultimate (UTS)
380 to 420 MPa 55 to 61 x 103 psi
Tensile Strength: Yield (Proof)
280 to 330 MPa 40 to 48 x 103 psi
Thermal Properties
Latent Heat of Fusion
390 J/g
Maximum Temperature: Mechanical
220 °C 420 °F
Melting Completion (Liquidus)
650 °C 1190 °F
Melting Onset (Solidus)
550 °C 1020 °F
Specific Heat Capacity
870 J/kg-K 0.21 BTU/lb-°F
Thermal Conductivity
120 W/m-K 72 BTU/h-ft-°F
Thermal Expansion
23 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
32 % IACS
Electrical Conductivity: Equal Weight (Specific)
95 % IACS
Otherwise Unclassified Properties
Base Metal Price
11 % relative
Density
3.0 g/cm3 190 lb/ft3
Embodied Carbon
8.3 kg CO2/kg material
Embodied Energy
160 MJ/kg 67 x 103 BTU/lb
Embodied Water
1150 L/kg 140 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
16 to 35 MJ/m3
Resilience: Unit (Modulus of Resilience)
540 to 770 kJ/m3
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
45 points
Strength to Weight: Axial
35 to 38 points
Strength to Weight: Bending
38 to 41 points
Thermal Diffusivity
47 mm2/s
Thermal Shock Resistance
17 to 18 points
Alloy Composition
Among cast aluminum alloys, the composition of 224.0 aluminum is notable for including zirconium (Zr) and vanadium (V). Zirconium is used to increase an alloy's recrystallization temperature, which increases the temperature at which the alloy can be used without permanent loss of mechanical properties. Vanadium is used to reduce grain size and increase recrystallization temperature.
| Al | 93 to 95.2 | |
| Cu | 4.5 to 5.5 | |
| Mn | 0.2 to 0.5 | |
| Ti | 0 to 0.35 | |
| Zr | 0.1 to 0.25 | |
| V | 0.050 to 0.15 | |
| Fe | 0 to 0.1 | |
| Si | 0 to 0.060 | |
| res. | 0 to 0.1 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Similar Alloys
Further Reading
Aluminum: Properties and Physical Metallurgy, John E. Hatch (editor), 1984
CRC Materials Science and Engineering Handbook, 4th ed., James F. Shackelford et al. (editors), 2015