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
| Al | 74.5 to 79.6 | |
| Si | 16 to 18 | |
| Cu | 4.0 to 5.0 | |
| Fe | 0 to 1.3 | |
| Mg | 0.45 to 0.65 | |
| 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
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