6061-T6/T651, Kaiser Aluminum typical properties (sheet, coil & plate datasheet); Poisson from MIL-HDBK-5J
Sumitomo Chemical SUMIKASUPER LCP E6006L (30% glass fibre; high strength, low shrinkage); SUMIKASUPER LCP Technical Note, Version 04 / Nov. 2023, typical values.
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 stronger than Plastic LCP GF30?
Aluminum is stronger: its yield strength is 276 MPa against tensile strength 115 MPa for Plastic LCP GF30 (2.4x).
Which is lighter, Aluminum or Plastic LCP GF30?
Plastic LCP GF30 is lighter: 1,610 kg/m³ against 2,700 kg/m³ for Aluminum.
Which is stiffer, Aluminum or Plastic LCP GF30?
Aluminum is stiffer: Young's modulus 68.3 GPa against 11.5 GPa for Plastic LCP GF30, so the same part in Aluminum deflects less under the same load.
Which is lighter for the same job, Aluminum or Plastic LCP GF30?
For the same stiffness or strength: Aluminum is lighter for a stiff rod or tie (tension), stiff beam (bending), stiff panel or plate, strong rod or tie, strong beam; Plastic LCP GF30 is lighter for a strong panel or plate.
Part that must be
Aluminum
Plastic LCP GF30
Stiff rod or tie (tension)
lighter
3.54x heavier
Stiff beam (bending)
lighter
45% heavier
Stiff panel or plate
lighter
8% heavier
Strong rod or tie
lighter
43% heavier
Strong beam
lighter
7% heavier
Strong panel or plate
8% 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 or Plastic LCP GF30?
Aluminum conducts heat better: 167 W/m·K against 0.5 W/m·K for Plastic LCP GF30.
Which expands less with temperature?
Plastic LCP GF30 expands less: 20 µm/m·K against 23.6 µm/m·K for Aluminum.