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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.

Aluminum (Al) 93 to 95.2
Copper (Cu) 4.5 to 5.5
Manganese (Mn) 0.2 to 0.5
Titanium (Ti) 0 to 0.35
Zirconium (Zr) 0.1 to 0.25
Vanadium (V) 0.050 to 0.15
Iron (Fe) 0 to 0.1
Silicon (Si) 0 to 0.060
Residuals 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