358.0 Cast Aluminum
358.0 aluminum is an aluminum alloy formulated for casting. 358.0 is the Aluminum Association (AA) designation for this material. Additionally, the UNS number is A03580. It has a moderately high base cost among the ANSI/AA cast aluminums in the database.
The properties of 358.0 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 358.0 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
3.5 to 6.0 %
Fatigue Strength
100 to 110 MPa 15 x 103 psi
Poisson's Ratio
0.33
Shear Modulus
27 GPa 3.9 x 106 psi
Shear Strength
300 to 320 MPa 43 to 46 x 103 psi
Tensile Strength: Ultimate (UTS)
350 to 370 MPa 50 to 53 x 103 psi
Tensile Strength: Yield (Proof)
290 to 320 MPa 42 to 46 x 103 psi
Thermal Properties
Latent Heat of Fusion
520 J/g
Maximum Temperature: Mechanical
170 °C 350 °F
Melting Completion (Liquidus)
600 °C 1110 °F
Melting Onset (Solidus)
560 °C 1040 °F
Specific Heat Capacity
900 J/kg-K 0.22 BTU/lb-°F
Thermal Conductivity
150 W/m-K 86 BTU/h-ft-°F
Thermal Expansion
21 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
36 % IACS
Electrical Conductivity: Equal Weight (Specific)
130 % IACS
Otherwise Unclassified Properties
Base Metal Price
19 % relative
Density
2.6 g/cm3 160 lb/ft3
Embodied Carbon
8.7 kg CO2/kg material
Embodied Energy
160 MJ/kg 68 x 103 BTU/lb
Embodied Water
1090 L/kg 130 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
12 to 20 MJ/m3
Resilience: Unit (Modulus of Resilience)
590 to 710 kJ/m3
Stiffness to Weight: Axial
15 points
Stiffness to Weight: Bending
53 points
Strength to Weight: Axial
37 to 39 points
Strength to Weight: Bending
42 to 44 points
Thermal Diffusivity
63 mm2/s
Thermal Shock Resistance
16 to 17 points
Alloy Composition
Among cast aluminum alloys, the composition of 358.0 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 | 89.1 to 91.8 | |
| Si | 7.6 to 8.6 | |
| Mg | 0.4 to 0.6 | |
| Be | 0.1 to 0.3 | |
| Ti | 0.1 to 0.2 | |
| Fe | 0 to 0.3 | |
| Mn | 0 to 0.2 | |
| Cr | 0 to 0.2 | |
| Zn | 0 to 0.2 | |
| Cu | 0 to 0.2 | |
| res. | 0 to 0.15 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Similar Alloys
Further Reading
Handbook of Aluminum Bonding Technology and Data, J. D. Minford, 1993
CRC Materials Science and Engineering Handbook, 4th ed., James F. Shackelford et al. (editors), 2015