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.
| Al | 75.3 to 79.6 | |
| Si | 16 to 18 | |
| Cu | 4.0 to 5.0 | |
| Mg | 0.45 to 0.65 | |
| Fe | 0 to 0.5 | |
| Ti | 0 to 0.2 | |
| Mn | 0 to 0.1 | |
| Zn | 0 to 0.1 | |
| res. | 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