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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.

Aluminum (Al) 93.3 to 95.3
Copper (Cu) 4.2 to 5.0
Manganese (Mn) 0.2 to 0.5
Magnesium (Mg) 0.15 to 0.35
Titanium (Ti) 0.15 to 0.3
Iron (Fe) 0 to 0.15
Silicon (Si) 0 to 0.1
Zinc (Zn) 0 to 0.1
Nickel (Ni) 0 to 0.050
Tin (Sn) 0 to 0.050
Residuals 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