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A390.0 (A13900) Cast Aluminum

A390.0 aluminum is an aluminum alloy formulated for casting. A390.0 is the Aluminum Association (AA) designation for this material. A13900 is the UNS number. It has the lowest electrical conductivity among the ANSI/AA cast aluminums in the database.

The properties of A390.0 aluminum include four common variations. This page shows summary ranges across all of them. For more specific values, follow the links immediately below. The graph bars on the material properties cards further below compare A390.0 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

Brinell Hardness

110 to 140

Elastic (Young's, Tensile) Modulus

75 GPa 11 x 106 psi

Elongation at Break

0.87 to 0.91 %

Fatigue Strength

70 to 100 MPa 10 to 15 x 103 psi

Poisson's Ratio

0.33

Shear Modulus

28 GPa 4.1 x 106 psi

Tensile Strength: Ultimate (UTS)

190 to 290 MPa 27 to 43 x 103 psi

Tensile Strength: Yield (Proof)

190 to 290 MPa 27 to 43 x 103 psi

Thermal Properties

Latent Heat of Fusion

640 J/g

Maximum Temperature: Mechanical

170 °C 340 °F

Melting Completion (Liquidus)

580 °C 1080 °F

Melting Onset (Solidus)

480 °C 900 °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

20 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

20 % IACS

Electrical Conductivity: Equal Weight (Specific)

67 % 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

140 MJ/kg 58 x 103 BTU/lb

Embodied Water

950 L/kg 110 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

1.6 to 2.6 MJ/m3

Resilience: Unit (Modulus of Resilience)

240 to 580 kJ/m3

Stiffness to Weight: Axial

15 points

Stiffness to Weight: Bending

52 points

Strength to Weight: Axial

19 to 30 points

Strength to Weight: Bending

27 to 36 points

Thermal Diffusivity

56 mm2/s

Thermal Shock Resistance

9.0 to 14 points

Alloy Composition

Among cast aluminum alloys, the composition of A390.0 aluminum is notable for containing comparatively high amounts of silicon (Si) and copper (Cu). Silicon is used to improve casting fluidity and lower melting temperature. It also has a strengthening effect. Copper is used to improve strength. This comes at the cost of a decrease in corrosion resistance and weldability.

Aluminum (Al) 75.3 to 79.6
Silicon (Si) 16 to 18
Copper (Cu) 4.0 to 5.0
Magnesium (Mg) 0.45 to 0.65
Iron (Fe) 0 to 0.5
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

Similar Alloys

Further Reading

Handbook of Aluminum Bonding Technology and Data, J. D. Minford, 1993

ASM Specialty Handbook: Aluminum and Aluminum Alloys, J. R. Davis (editor), 1993