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).
Every value links to the document that states it. "Not sourced" means no citable source states it (or only a specification minimum); figures computed from it are left out too.
Questions
Is Aluminum 1100-O stronger than Ceramic Alumina 96%?
Ceramic Alumina 96% is stronger: its tensile strength is 221 MPa against yield strength 35 MPa for Aluminum 1100-O (6.31x).
Which is lighter, Aluminum 1100-O or Ceramic Alumina 96%?
Aluminum 1100-O is lighter: 2,710 kg/m³ against 3,720 kg/m³ for Ceramic Alumina 96%.
Which is stiffer, Aluminum 1100-O or Ceramic Alumina 96%?
Ceramic Alumina 96% is stiffer: Young's modulus 303 GPa against 69 GPa for Aluminum 1100-O, so the same part in Ceramic Alumina 96% deflects less under the same load.
Which is lighter for the same job, Aluminum 1100-O or Ceramic Alumina 96%?
For the same stiffness or strength: Ceramic Alumina 96% 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 1100-O
Ceramic Alumina 96%
Stiff rod or tie (tension)
3.2x heavier
lighter
Stiff beam (bending)
1.53x heavier
lighter
Stiff panel or plate
19% heavier
lighter
Strong rod or tie
4.6x heavier
lighter
Strong beam
2.49x heavier
lighter
Strong panel or plate
1.83x 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 conducts heat better, Aluminum 1100-O or Ceramic Alumina 96%?
Aluminum 1100-O conducts heat better: 222 W/m·K against 24.7 W/m·K for Ceramic Alumina 96%.
Which expands less with temperature?
Ceramic Alumina 96% expands less: 8.2 µm/m·K against 23.6 µm/m·K for Aluminum 1100-O.