206.0-T7 Cast Aluminum
206.0-T7 aluminum is 206.0 aluminum in the T7 temper. To achieve this temper, the metal is solution heat-treated and stabilized by artificial overaging. It has the highest strength and highest ductility compared to the other variants of 206.0 aluminum.
The graph bars on the material properties cards below compare 206.0-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
Compressive (Crushing) Strength
370 MPa 54 x 103 psi
Elastic (Young's, Tensile) Modulus
71 GPa 10 x 106 psi
Elongation at Break
12 %
Fatigue Strength
210 MPa 30 x 103 psi
Fracture Toughness
43 MPa-m1/2 39 x 103 psi-in1/2
Impact Strength: V-Notched Charpy
9.5 J 7.0 ft-lb
Poisson's Ratio
0.33
Reduction in Area
26 %
Shear Modulus
27 GPa 3.9 x 106 psi
Shear Strength
260 MPa 37 x 103 psi
Tensile Strength: Ultimate (UTS)
440 MPa 63 x 103 psi
Tensile Strength: Yield (Proof)
350 MPa 50 x 103 psi
Thermal Properties
Latent Heat of Fusion
390 J/g
Maximum Temperature: Mechanical
170 °C 340 °F
Melting Completion (Liquidus)
650 °C 1200 °F
Melting Onset (Solidus)
570 °C 1060 °F
Specific Heat Capacity
880 J/kg-K 0.21 BTU/lb-°F
Thermal Conductivity
120 W/m-K 70 BTU/h-ft-°F
Thermal Expansion
19 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
Calomel Potential
-680 mV
Density
3.0 g/cm3 190 lb/ft3
Embodied Carbon
8.0 kg CO2/kg material
Embodied Energy
150 MJ/kg 64 x 103 BTU/lb
Embodied Water
1150 L/kg 140 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
49 MJ/m3
Resilience: Unit (Modulus of Resilience)
840 kJ/m3
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
46 points
Strength to Weight: Axial
40 points
Strength to Weight: Bending
42 points
Thermal Diffusivity
46 mm2/s
Thermal Shock Resistance
23 points
Alloy Composition
| Al | 93.3 to 95.3 | |
| Cu | 4.2 to 5.0 | |
| Mn | 0.2 to 0.5 | |
| Mg | 0.15 to 0.35 | |
| Ti | 0.15 to 0.3 | |
| Fe | 0 to 0.15 | |
| Si | 0 to 0.1 | |
| Zn | 0 to 0.1 | |
| 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
Advanced Materials in Automotive Engineering, Jason Rowe (editor), 2012
Aluminum: Properties and Physical Metallurgy, John E. Hatch (editor), 1984
Properties and Selection: Nonferrous Alloys and Special-Purpose Materials, ASM Handbook vol. 2, ASM International, 1993