206.0 (A02060) Cast Aluminum
206.0 aluminum is an aluminum alloy formulated for casting. 206.0 is the Aluminum Association (AA) designation for this material. A02060 is the UNS number.
The properties of 206.0 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 206.0 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
95 to 110
Elastic (Young's, Tensile) Modulus
71 GPa 10 x 106 psi
Elongation at Break
8.4 to 12 %
Fatigue Strength
88 to 210 MPa 13 to 30 x 103 psi
Impact Strength: V-Notched Charpy
9.5 J 7.0 ft-lb
Poisson's Ratio
0.33
Shear Modulus
27 GPa 3.9 x 106 psi
Shear Strength
260 MPa 37 x 103 psi
Tensile Strength: Ultimate (UTS)
330 to 440 MPa 47 to 63 x 103 psi
Tensile Strength: Yield (Proof)
190 to 350 MPa 28 to 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)
24 to 49 MJ/m3
Resilience: Unit (Modulus of Resilience)
270 to 840 kJ/m3
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
46 points
Strength to Weight: Axial
30 to 40 points
Strength to Weight: Bending
35 to 42 points
Thermal Diffusivity
46 mm2/s
Thermal Shock Resistance
17 to 23 points
Alloy Composition
Among cast aluminum alloys, the composition of 206.0 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 | 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
Similar Alloys
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