Thermal conductivity against densityHigher and further left: spreads more heat for its weightThermal expansion against thermal conductivityLower and further right: warps less when heated
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3003-O (annealed) aluminium-manganese alloy, the heat-exchanger tube and brazing alloy, Kaiser Aluminum Tube & Pipe Alloy 3003 Technical Data (Rev. 05/06), typical properties; specific heat from the NIST cryogenic 3003-F fit at 293 K.
Aluminum 6063-T6
6063-T6 extruded tube, Kaiser Aluminum Tube & Pipe Alloy 6063 Technical Data (Rev. 05/06), typical properties; specific heat from Hydro EN AW-6063 extruded-products datasheet (Rev.4, 03/2023).
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Alloy 3003 Tube & Pipe Technical Data, Rev. 05/06Kaiser Aluminumarchived copyAluminum 3003-O · Yield strength: typical, O, 0.0625 in specimenAluminum 3003-O · Ultimate tensile strength: typical, OAluminum 3003-O · Elongation at break: typical, O, in 4DAluminum 3003-O · Young's modulus (stiffness): typicalAluminum 3003-O · Density: nominal, 20 °CAluminum 3003-O · Thermal conductivity: typical, O, 20 °CAluminum 3003-O · Thermal expansion: typical, mean 20-100 °CAluminum 3003-O · Melting point: melting range
Technical Datasheet, Extruded Products: Alloy EN AW-6063 (Rev. 4, 2023)Hydroarchived copyAluminum 6063-T6 · Specific heat: typical, 20 °C (Hydro EN AW-6063)
Each number points to the document that states it, with the exact basis. Values without a number are computed from the sourced ones. "Not sourced" means no citable source states it (or only a specification minimum); figures computed from it are left out too.
Questions
Mechanical
Is Aluminum 3003-O stronger than Aluminum 6063-T6?
Aluminum 6063-T6 is stronger: its yield strength is 215 MPa against 40 MPa for Aluminum 3003-O (5.38x).
Which is lighter, Aluminum 3003-O or Aluminum 6063-T6?
Aluminum 6063-T6 is lighter: 2,700 kg/m³ against 2,730 kg/m³ for Aluminum 3003-O.
Which is stiffer, Aluminum 3003-O or Aluminum 6063-T6?
Aluminum 3003-O is stiffer: Young's modulus 69 GPa against 69 GPa for Aluminum 6063-T6, so the same part in Aluminum 3003-O deflects less under the same load.
Which is lighter for the same job, Aluminum 3003-O or Aluminum 6063-T6?
For the same stiffness or strength: Aluminum 6063-T6 is lighter for a stiff rod or tie (tension), stiff beam (bending), stiff panel or plate, strong rod or tie, strong beam, strong panel or plate.
Part that must be
Aluminum 3003-O
Aluminum 6063-T6
Stiff rod or tie (tension)
1% heavier
lighter
Stiff beam (bending)
1% heavier
lighter
Stiff panel or plate
1% heavier
lighter
Strong rod or tie
5.43x heavier
lighter
Strong beam
3.1x heavier
lighter
Strong panel or plate
2.34x heavier
lighter
For the same stiffness or strength, mass scales with density over stiffness (or strength) raised to a power set by how the part is loaded: 1 for a rod in tension, 1/2 for a beam in bending, 1/3 for a panel (the standard material-selection indices).
Which is more ductile, Aluminum 3003-O or Aluminum 6063-T6?
Aluminum 3003-O stretches further before it breaks: 30% elongation at break against 12% for Aluminum 6063-T6.
Thermal
Which conducts heat better, Aluminum 3003-O or Aluminum 6063-T6?
Aluminum 6063-T6 conducts heat better: 201 W/m·K against 193 W/m·K for Aluminum 3003-O.
Which expands less with temperature?
Aluminum 3003-O expands less: 23.2 µm/m·K against 23.4 µm/m·K for Aluminum 6063-T6.