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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1100-O (annealed) commercially pure aluminium, Kaiser Aluminum Tube & Pipe Alloy 1100 Technical Data (Rev. 05/06), typical properties; specific heat from Hydro EN AW-1050A (99.5% Al) extruded-products datasheet (10/2018).
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 1100 Tube & Pipe Technical Data, Rev. 05/06Kaiser Aluminumarchived copyAluminum 1100-O · Yield strength: typical, O, 0.0625 in specimenAluminum 1100-O · Ultimate tensile strength: typical, OAluminum 1100-O · Elongation at break: typical, O, in 4DAluminum 1100-O · Young's modulus (stiffness): typicalAluminum 1100-O · Density: nominal, 20 °CAluminum 1100-O · Thermal conductivity: typical, O, 20 °CAluminum 1100-O · Thermal expansion: typical, mean 20-100 °CAluminum 1100-O · Melting point: melting range
Technical Datasheet, Extruded Products: Alloy EN AW-1050AHydroAluminum 1100-O · Specific heat: base material: commercially pure aluminium EN AW-1050A (Hydro), 20 °C
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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 1100-O stronger than Aluminum 6063-T6?
Aluminum 6063-T6 is stronger: its yield strength is 215 MPa against 35 MPa for Aluminum 1100-O (6.14x).
Which is lighter, Aluminum 1100-O or Aluminum 6063-T6?
Aluminum 6063-T6 is lighter: 2,700 kg/m³ against 2,710 kg/m³ for Aluminum 1100-O.
Which is stiffer, Aluminum 1100-O or Aluminum 6063-T6?
Aluminum 1100-O is stiffer: Young's modulus 69 GPa against 69 GPa for Aluminum 6063-T6, so the same part in Aluminum 1100-O deflects less under the same load.
Which is lighter for the same job, Aluminum 1100-O or Aluminum 6063-T6?
For the same stiffness or strength: Aluminum 6063-T6 is lighter for a strong rod or tie, strong beam, strong panel or plate.
Part that must be
Aluminum 1100-O
Aluminum 6063-T6
Stiff rod or tie (tension)
about equal
about equal
Stiff beam (bending)
about equal
about equal
Stiff panel or plate
about equal
about equal
Strong rod or tie
6.17x heavier
lighter
Strong beam
3.37x heavier
lighter
Strong panel or plate
2.49x 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 1100-O or Aluminum 6063-T6?
Aluminum 1100-O stretches further before it breaks: 35% elongation at break against 12% for Aluminum 6063-T6.
Thermal
Which conducts heat better, Aluminum 1100-O or Aluminum 6063-T6?
Aluminum 1100-O conducts heat better: 222 W/m·K against 201 W/m·K for Aluminum 6063-T6.
Which expands less with temperature?
Aluminum 6063-T6 expands less: 23.4 µm/m·K against 23.6 µm/m·K for Aluminum 1100-O.