296.0 (A02960) Cast Aluminum
296.0 aluminum is an aluminum alloy formulated for casting. 296.0 is the Aluminum Association (AA) designation for this material. A02960 is the UNS number. Additionally, the SAE designation is 380.
The properties of 296.0 aluminum include three 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 296.0 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
75 to 90
Elastic (Young's, Tensile) Modulus
72 GPa 10 x 106 psi
Elongation at Break
3.2 to 7.1 %
Fatigue Strength
47 to 70 MPa 6.9 to 10 x 103 psi
Poisson's Ratio
0.33
Shear Modulus
27 GPa 3.9 x 106 psi
Tensile Strength: Ultimate (UTS)
260 to 270 MPa 38 to 40 x 103 psi
Tensile Strength: Yield (Proof)
120 to 180 MPa 18 to 26 x 103 psi
Thermal Properties
Latent Heat of Fusion
420 J/g
Maximum Temperature: Mechanical
170 °C 340 °F
Melting Completion (Liquidus)
630 °C 1170 °F
Melting Onset (Solidus)
540 °C 1000 °F
Specific Heat Capacity
870 J/kg-K 0.21 BTU/lb-°F
Thermal Conductivity
130 to 150 W/m-K 77 to 85 BTU/h-ft-°F
Thermal Expansion
22 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
33 to 37 % IACS
Electrical Conductivity: Equal Weight (Specific)
99 to 110 % IACS
Otherwise Unclassified Properties
Base Metal Price
11 % relative
Density
3.0 g/cm3 190 lb/ft3
Embodied Carbon
7.8 kg CO2/kg material
Embodied Energy
150 MJ/kg 63 x 103 BTU/lb
Embodied Water
1110 L/kg 130 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
7.6 to 15 MJ/m3
Resilience: Unit (Modulus of Resilience)
110 to 220 kJ/m3
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
46 points
Strength to Weight: Axial
24 to 25 points
Strength to Weight: Bending
30 to 31 points
Thermal Diffusivity
51 to 56 mm2/s
Thermal Shock Resistance
12 points
Alloy Composition
Among cast aluminum alloys, the composition of 296.0 aluminum is notable for containing a comparatively high amount of copper (Cu). Copper is used to improve strength. This comes at the cost of a decrease in corrosion resistance and weldability.
| Al | 89 to 94 | |
| Cu | 4.0 to 5.0 | |
| Si | 2.0 to 3.0 | |
| Fe | 0 to 1.2 | |
| Zn | 0 to 0.5 | |
| Mn | 0 to 0.35 | |
| Ni | 0 to 0.35 | |
| Ti | 0 to 0.25 | |
| Mg | 0 to 0.050 | |
| res. | 0 to 0.35 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Similar Alloys
Further Reading
ASTM B108: Standard Specification for Aluminum-Alloy Permanent Mold Castings
Iron in Aluminium Alloys: Impurity and Alloying Element, N. A. Belov et al., 2002
Properties and Selection: Nonferrous Alloys and Special-Purpose Materials, ASM Handbook vol. 2, ASM International, 1993