296.0-T6 Cast Aluminum
296.0-T6 aluminum is 296.0 aluminum in the T6 temper. To achieve this temper, the metal is solution heat-treated and artificially aged until it meets standard mechanical property requirements. It has the highest strength and lowest ductility compared to the other variants of 296.0 aluminum.
The graph bars on the material properties cards below compare 296.0-T6 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
90
Elastic (Young's, Tensile) Modulus
72 GPa 10 x 106 psi
Elongation at Break
3.2 %
Fatigue Strength
70 MPa 10 x 103 psi
Poisson's Ratio
0.33
Shear Modulus
27 GPa 3.9 x 106 psi
Shear Strength
220 MPa 32 x 103 psi
Tensile Strength: Ultimate (UTS)
270 MPa 40 x 103 psi
Tensile Strength: Yield (Proof)
180 MPa 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 W/m-K 77 BTU/h-ft-°F
Thermal Expansion
22 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
33 % IACS
Electrical Conductivity: Equal Weight (Specific)
99 % 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 MJ/m3
Resilience: Unit (Modulus of Resilience)
220 kJ/m3
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
46 points
Strength to Weight: Axial
25 points
Strength to Weight: Bending
31 points
Thermal Diffusivity
51 mm2/s
Thermal Shock Resistance
12 points
Alloy Composition
| 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
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