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.
| Al | 96.6 to 99 | |
| Mn | 1.0 to 1.5 | |
| Fe | 0 to 0.7 | |
| Si | 0 to 0.6 | |
| Zn | 0 to 0.3 | |
| Cu | 0.050 to 0.2 | |
| res. | 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