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3303 (3303-O, A93303) Aluminum

3303 aluminum is a 3000-series aluminum alloy: the main alloying addition is manganese, and it is formulated for primary forming into wrought products. Cited properties are appropriate for the annealed condition. 3303 is the Aluminum Association (AA) designation for this material. In European standards, it will be given as EN AW-3303. A93303 is the UNS number.

The graph bars on the material properties cards below compare 3303 aluminum to: 3000-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

23 %

Fatigue Strength

43 MPa 6.3 x 103 psi

Poisson's Ratio

0.33

Shear Modulus

26 GPa 3.8 x 106 psi

Shear Strength

69 MPa 10 x 103 psi

Tensile Strength: Ultimate (UTS)

110 MPa 16 x 103 psi

Tensile Strength: Yield (Proof)

39 MPa 5.7 x 103 psi

Thermal Properties

Latent Heat of Fusion

400 J/g

Maximum Temperature: Mechanical

180 °C 360 °F

Melting Completion (Liquidus)

650 °C 1200 °F

Melting Onset (Solidus)

620 °C 1150 °F

Specific Heat Capacity

900 J/kg-K 0.21 BTU/lb-°F

Thermal Conductivity

170 W/m-K 96 BTU/h-ft-°F

Thermal Expansion

23 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

43 % IACS

Electrical Conductivity: Equal Weight (Specific)

140 % IACS

Otherwise Unclassified Properties

Base Metal Price

9.5 % relative

Density

2.8 g/cm3 170 lb/ft3

Embodied Carbon

8.1 kg CO2/kg material

Embodied Energy

150 MJ/kg 66 x 103 BTU/lb

Embodied Water

1180 L/kg 140 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

20 MJ/m3

Resilience: Unit (Modulus of Resilience)

11 kJ/m3

Stiffness to Weight: Axial

14 points

Stiffness to Weight: Bending

49 points

Strength to Weight: Axial

11 points

Strength to Weight: Bending

18 points

Thermal Diffusivity

67 mm2/s

Thermal Shock Resistance

4.8 points

Alloy Composition

Among wrought aluminum alloys, the composition of 3303 aluminum is notable for containing a comparatively high amount of manganese (Mn). Manganese is used to improve strength without a proportional reduction in ductility. It also improves workability by controlling the grain structure of the alloy.

Aluminum (Al) 96.6 to 99
Manganese (Mn) 1.0 to 1.5
Iron (Fe) 0 to 0.7
Silicon (Si) 0 to 0.6
Zinc (Zn) 0 to 0.3
Copper (Cu) 0.050 to 0.2
Residuals 0 to 0.15

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

Followup Questions

Similar Alloys

Further Reading

ASTM B210: Standard Specification for Aluminum and Aluminum-Alloy Drawn Seamless Tubes

Handbook of Aluminum Bonding Technology and Data, J. D. Minford, 1993

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