A206.0-T71 Cast Aluminum
A206.0-T71 aluminum is A206.0 aluminum in the T71 temper. To achieve this temper, the metal is solution heat-treated and stabilized by artificial overaging, but to a smaller degree than in T7 temper. It has the lowest ductility compared to the other variants of A206.0 aluminum.
The graph bars on the material properties cards below compare A206.0-T71 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
Elastic (Young's, Tensile) Modulus
70 GPa 10 x 106 psi
Elongation at Break
4.2 %
Fatigue Strength
180 MPa 27 x 103 psi
Poisson's Ratio
0.33
Shear Modulus
26 GPa 3.8 x 106 psi
Shear Strength
260 MPa 37 x 103 psi
Tensile Strength: Ultimate (UTS)
420 MPa 60 x 103 psi
Tensile Strength: Yield (Proof)
340 MPa 50 x 103 psi
Thermal Properties
Latent Heat of Fusion
390 J/g
Maximum Temperature: Mechanical
170 °C 340 °F
Melting Completion (Liquidus)
670 °C 1230 °F
Melting Onset (Solidus)
550 °C 1020 °F
Specific Heat Capacity
880 J/kg-K 0.21 BTU/lb-°F
Thermal Conductivity
130 W/m-K 74 BTU/h-ft-°F
Thermal Expansion
23 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
30 % IACS
Electrical Conductivity: Equal Weight (Specific)
90 % IACS
Otherwise Unclassified Properties
Base Metal Price
11 % relative
Density
3.0 g/cm3 190 lb/ft3
Embodied Carbon
8.0 kg CO2/kg material
Embodied Energy
150 MJ/kg 65 x 103 BTU/lb
Embodied Water
1150 L/kg 140 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
16 MJ/m3
Resilience: Unit (Modulus of Resilience)
830 kJ/m3
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
46 points
Strength to Weight: Axial
38 points
Strength to Weight: Bending
41 points
Thermal Diffusivity
48 mm2/s
Thermal Shock Resistance
18 points
Alloy Composition
| Al | 93.9 to 95.7 | |
| Cu | 4.2 to 5.0 | |
| Ti | 0.15 to 0.3 | |
| Mn | 0 to 0.2 | |
| Mg | 0 to 0.15 | |
| Fe | 0 to 0.1 | |
| Zn | 0 to 0.1 | |
| Si | 0 to 0.050 | |
| Ni | 0 to 0.050 | |
| Sn | 0 to 0.050 | |
| res. | 0 to 0.15 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Further Reading
Aluminum: Properties and Physical Metallurgy, John E. Hatch (editor), 1984
ASM Specialty Handbook: Aluminum and Aluminum Alloys, J. R. Davis (editor), 1993