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.
| Al | 87.2 to 92 | |
| Si | 7.5 to 9.5 | |
| Fe | 0 to 1.5 | |
| Cr | 0.25 to 0.5 | |
| Mg | 0.2 to 0.4 | |
| Cu | 0 to 0.2 | |
| Ni | 0 to 0.15 | |
| Sn | 0 to 0.15 | |
| Zn | 0 to 0.15 | |
| Mn | 0 to 0.1 | |
| Be | 0.020 to 0.040 | |
| res. | 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