333.0-T7 Cast Aluminum
333.0-T7 aluminum is 333.0 aluminum in the T7 temper. To achieve this temper, the metal is solution heat-treated and stabilized by artificial overaging. The graph bars on the material properties cards below compare 333.0-T7 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
73 GPa 11 x 106 psi
Elongation at Break
2.0 %
Fatigue Strength
83 MPa 12 x 103 psi
Poisson's Ratio
0.33
Shear Modulus
28 GPa 4.0 x 106 psi
Shear Strength
190 MPa 28 x 103 psi
Tensile Strength: Ultimate (UTS)
250 MPa 36 x 103 psi
Tensile Strength: Yield (Proof)
190 MPa 28 x 103 psi
Thermal Properties
Latent Heat of Fusion
520 J/g
Maximum Temperature: Mechanical
170 °C 340 °F
Melting Completion (Liquidus)
590 °C 1090 °F
Melting Onset (Solidus)
530 °C 990 °F
Specific Heat Capacity
880 J/kg-K 0.21 BTU/lb-°F
Thermal Conductivity
140 W/m-K 82 BTU/h-ft-°F
Thermal Expansion
21 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
35 % IACS
Electrical Conductivity: Equal Weight (Specific)
110 % IACS
Otherwise Unclassified Properties
Base Metal Price
10 % relative
Density
2.8 g/cm3 180 lb/ft3
Embodied Carbon
7.6 kg CO2/kg material
Embodied Energy
140 MJ/kg 61 x 103 BTU/lb
Embodied Water
1040 L/kg 120 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
4.6 MJ/m3
Resilience: Unit (Modulus of Resilience)
250 kJ/m3
Stiffness to Weight: Axial
14 points
Stiffness to Weight: Bending
49 points
Strength to Weight: Axial
24 points
Strength to Weight: Bending
31 points
Thermal Diffusivity
57 mm2/s
Thermal Shock Resistance
12 points
Alloy Composition
| Al | 81.8 to 89 | |
| Si | 8.0 to 10 | |
| Cu | 3.0 to 4.0 | |
| Fe | 0 to 1.0 | |
| Zn | 0 to 1.0 | |
| Mg | 0.050 to 0.5 | |
| Mn | 0 to 0.5 | |
| Ni | 0 to 0.5 | |
| Ti | 0 to 0.25 | |
| res. | 0 to 0.5 |
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
CRC Materials Science and Engineering Handbook, 4th ed., James F. Shackelford et al. (editors), 2015