C11000 ETP copper, annealed to 0.050 mm grain size (OS050), 1 in. rod, copper.org typical values
BASF Ultradur B 4300 G6 (PBT, 30% glass fibre), injection moulding grade; product information sheet 09/2026, typical values for uncoloured product at 23 °C.
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 Copper C110 stronger than Plastic PBT GF30?
Plastic PBT GF30 is stronger: its tensile strength is 140 MPa against yield strength 69 MPa for Copper C110 (2.03x).
Which is lighter, Copper C110 or Plastic PBT GF30?
Plastic PBT GF30 is lighter: 1,530 kg/m³ against 8,913 kg/m³ for Copper C110.
Which is stiffer, Copper C110 or Plastic PBT GF30?
Copper C110 is stiffer: Young's modulus 117 GPa against 9.8 GPa for Plastic PBT GF30, so the same part in Copper C110 deflects less under the same load.
Which is lighter for the same job, Copper C110 or Plastic PBT GF30?
For the same stiffness or strength: Copper C110 is lighter for a stiff rod or tie (tension); Plastic PBT GF30 is lighter for a stiff beam (bending), stiff panel or plate, strong rod or tie, strong beam, strong panel or plate.
Part that must be
Copper C110
Plastic PBT GF30
Stiff rod or tie (tension)
lighter
2.05x heavier
Stiff beam (bending)
1.68x heavier
lighter
Stiff panel or plate
2.55x heavier
lighter
Strong rod or tie
11.8x heavier
lighter
Strong beam
9.34x heavier
lighter
Strong panel or plate
8.3x 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, Copper C110 or Plastic PBT GF30?
Copper C110 conducts heat better: 391 W/m·K against 0.27 W/m·K for Plastic PBT GF30.
Which expands less with temperature?
Copper C110 expands less: 16.9 µm/m·K against 25 µm/m·K for Plastic PBT GF30.