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364.0 (364.0-F) Cast Aluminum

364.0 aluminum is an aluminum alloy formulated for casting. Cited properties are appropriate for the as-fabricated (no temper or treatment) condition. 364.0 is the Aluminum Association (AA) designation for this material. Additionally, the UNS number is A03640.

The graph bars on the material properties cards below compare 364.0 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

72 GPa 10 x 106 psi

Elongation at Break

7.5 %

Fatigue Strength

120 MPa 18 x 103 psi

Poisson's Ratio

0.33

Shear Modulus

27 GPa 3.9 x 106 psi

Shear Strength

200 MPa 29 x 103 psi

Tensile Strength: Ultimate (UTS)

300 MPa 43 x 103 psi

Tensile Strength: Yield (Proof)

160 MPa 23 x 103 psi

Thermal Properties

Latent Heat of Fusion

520 J/g

Maximum Temperature: Mechanical

190 °C 370 °F

Melting Completion (Liquidus)

600 °C 1110 °F

Melting Onset (Solidus)

560 °C 1040 °F

Specific Heat Capacity

900 J/kg-K 0.21 BTU/lb-°F

Thermal Conductivity

120 W/m-K 70 BTU/h-ft-°F

Thermal Expansion

21 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

30 % IACS

Electrical Conductivity: Equal Weight (Specific)

100 % IACS

Otherwise Unclassified Properties

Base Metal Price

11 % relative

Density

2.6 g/cm3 160 lb/ft3

Embodied Carbon

8.0 kg CO2/kg material

Embodied Energy

150 MJ/kg 64 x 103 BTU/lb

Embodied Water

1080 L/kg 130 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

19 MJ/m3

Resilience: Unit (Modulus of Resilience)

180 kJ/m3

Stiffness to Weight: Axial

15 points

Stiffness to Weight: Bending

53 points

Strength to Weight: Axial

31 points

Strength to Weight: Bending

38 points

Thermal Diffusivity

51 mm2/s

Thermal Shock Resistance

14 points

Alloy Composition

Among cast aluminum alloys, the composition of 364.0 aluminum is notable for including beryllium (Be) and chromium (Cr). Beryllium is used to reduce oxidation at elevated temperatures, at the cost of substantial toxicity. Chromium is used to limit grain growth during hot working or heat treatment, which improves ductility and toughness. Chromium also reduces the alloy's susceptibility to stress corrosion cracking. If the alloy is anodized, the presence of chromium will tend to add a yellow tint to the film.

Aluminum (Al) 87.2 to 92
Silicon (Si) 7.5 to 9.5
Iron (Fe) 0 to 1.5
Chromium (Cr) 0.25 to 0.5
Magnesium (Mg) 0.2 to 0.4
Copper (Cu) 0 to 0.2
Nickel (Ni) 0 to 0.15
Tin (Sn) 0 to 0.15
Zinc (Zn) 0 to 0.15
Manganese (Mn) 0 to 0.1
Beryllium (Be) 0.020 to 0.040
Residuals 0 to 0.15

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