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2011A (AlCu6BiPb(A)) Aluminum

2011A aluminum is a 2000-series aluminum alloy: the main alloying addition is copper, and it is formulated for primary forming into wrought products. 2011A is the Aluminum Association (AA) designation for this material. In European standards, it will be given as EN AW-2011A. AlCu6BiPb(A) is the EN chemical designation.

It originally received its standard designation in 1982.

The properties of 2011A aluminum include four 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 2011A aluminum to: 2000-series alloys (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

Elastic (Young's, Tensile) Modulus

70 GPa 10 x 106 psi

Elongation at Break

6.8 to 16 %

Fatigue Strength

75 to 100 MPa 11 to 15 x 103 psi

Poisson's Ratio

0.33

Shear Modulus

26 GPa 3.8 x 106 psi

Shear Strength

190 to 250 MPa 27 to 36 x 103 psi

Tensile Strength: Ultimate (UTS)

310 to 410 MPa 45 to 60 x 103 psi

Tensile Strength: Yield (Proof)

140 to 310 MPa 21 to 45 x 103 psi

Thermal Properties

Latent Heat of Fusion

390 J/g

Maximum Temperature: Mechanical

190 °C 370 °F

Melting Completion (Liquidus)

660 °C 1230 °F

Melting Onset (Solidus)

550 °C 1020 °F

Specific Heat Capacity

870 J/kg-K 0.21 BTU/lb-°F

Thermal Conductivity

130 W/m-K 76 BTU/h-ft-°F

Thermal Expansion

23 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

33 % IACS

Electrical Conductivity: Equal Weight (Specific)

96 % IACS

Otherwise Unclassified Properties

Base Metal Price

11 % relative

Density

3.1 g/cm3 190 lb/ft3

Embodied Carbon

7.9 kg CO2/kg material

Embodied Energy

150 MJ/kg 63 x 103 BTU/lb

Embodied Water

1150 L/kg 140 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

20 to 40 MJ/m3

Resilience: Unit (Modulus of Resilience)

140 to 670 kJ/m3

Stiffness to Weight: Axial

13 points

Stiffness to Weight: Bending

44 points

Strength to Weight: Axial

28 to 37 points

Strength to Weight: Bending

33 to 40 points

Thermal Diffusivity

49 mm2/s

Thermal Shock Resistance

14 to 18 points

Alloy Composition

Among wrought aluminum alloys, the composition of 2011A aluminum is notable for containing a comparatively high amount of copper (Cu) and including lead (Pb). Copper is used to improve strength. This comes at the cost of a decrease in corrosion resistance and weldability. Lead is used to improve machinability at the cost of toxicity and a decrease in weldability.

Aluminum (Al)Al 91.5 to 95.1
Copper (Cu)Cu 4.5 to 6.0
Lead (Pb)Pb 0.2 to 0.6
Bismuth (Bi)Bi 0.2 to 0.6
Iron (Fe)Fe 0 to 0.5
Silicon (Si)Si 0 to 0.4
Zinc (Zn)Zn 0 to 0.3
Residualsres. 0 to 0.15

All values are % weight. Ranges represent what is permitted under applicable standards.

Followup Questions

Similar Alloys

Further Reading

EN 754-2: Aluminium and aluminium alloys. Cold drawn rod/bar and tube. Mechanical properties

EN 755-2: Aluminium and aluminium alloys. Extruded rod/bar, tube and profiles. Mechanical properties

ASM Specialty Handbook: Aluminum and Aluminum Alloys, J. R. Davis (editor), 1993

EN 573-3: Aluminium and aluminium alloys. Chemical composition and form of wrought products. Chemical composition and form of products

CRC Materials Science and Engineering Handbook, 4th ed., James F. Shackelford et al. (editors), 2015