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390.0-F Cast Aluminum

390.0-F aluminum is 390.0 aluminum in the as-fabricated (no temper or treatment) condition. The graph bars on the material properties cards below compare 390.0-F 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

Brinell Hardness

120

Elastic (Young's, Tensile) Modulus

75 GPa 11 x 106 psi

Elongation at Break

1.0 %

Fatigue Strength

76 MPa 11 x 103 psi

Poisson's Ratio

0.33

Shear Modulus

28 GPa 4.1 x 106 psi

Tensile Strength: Ultimate (UTS)

280 MPa 40 x 103 psi

Tensile Strength: Yield (Proof)

240 MPa 35 x 103 psi

Thermal Properties

Latent Heat of Fusion

640 J/g

Maximum Temperature: Mechanical

170 °C 340 °F

Melting Completion (Liquidus)

650 °C 1200 °F

Melting Onset (Solidus)

560 °C 1030 °F

Specific Heat Capacity

880 J/kg-K 0.21 BTU/lb-°F

Thermal Conductivity

130 W/m-K 77 BTU/h-ft-°F

Thermal Expansion

18 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

25 % IACS

Electrical Conductivity: Equal Weight (Specific)

83 % IACS

Otherwise Unclassified Properties

Base Metal Price

11 % relative

Density

2.7 g/cm3 170 lb/ft3

Embodied Carbon

7.3 kg CO2/kg material

Embodied Energy

130 MJ/kg 58 x 103 BTU/lb

Embodied Water

950 L/kg 110 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

2.7 MJ/m3

Resilience: Unit (Modulus of Resilience)

380 kJ/m3

Stiffness to Weight: Axial

15 points

Stiffness to Weight: Bending

52 points

Strength to Weight: Axial

28 points

Strength to Weight: Bending

35 points

Thermal Diffusivity

56 mm2/s

Thermal Shock Resistance

14 points

Alloy Composition

Aluminum (Al) 74.5 to 79.6
Silicon (Si) 16 to 18
Copper (Cu) 4.0 to 5.0
Iron (Fe) 0 to 1.3
Magnesium (Mg) 0.45 to 0.65
Titanium (Ti) 0 to 0.2
Manganese (Mn) 0 to 0.1
Zinc (Zn) 0 to 0.1
Residuals 0 to 0.2

All values are % weight. Ranges represent what is permitted under applicable standards.

Followup Questions

Further Reading

ASTM B85: Standard Specification for Aluminum-Alloy Die Castings

Iron in Aluminium Alloys: Impurity and Alloying Element, N. A. Belov et al., 2002

CRC Materials Science and Engineering Handbook, 4th ed., James F. Shackelford et al. (editors), 2015