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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.

Aluminum (Al) 89.1 to 91.8
Silicon (Si) 7.6 to 8.6
Magnesium (Mg) 0.4 to 0.6
Beryllium (Be) 0.1 to 0.3
Titanium (Ti) 0.1 to 0.2
Iron (Fe) 0 to 0.3
Manganese (Mn) 0 to 0.2
Chromium (Cr) 0 to 0.2
Zinc (Zn) 0 to 0.2
Copper (Cu) 0 to 0.2
Residuals 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