Bambu Lab ASA, TDS V3.0, printed specimens X-Y; nozzle 260 °C, bed 80 °C, 200 mm/s, 100% infill; annealed and dried 80 °C for 12 h before testing.
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.
FDM ASA is 3D printed: its properties depend on build direction and print settings; these are typical values.
Questions
Is FDM ASA stronger than Plastic PBT GF30?
Plastic PBT GF30 is stronger: its tensile strength is 140 MPa against 37 MPa for FDM ASA (3.78x).
Which is lighter, FDM ASA or Plastic PBT GF30?
FDM ASA is lighter: 1,050 kg/m³ against 1,530 kg/m³ for Plastic PBT GF30.
Which is stiffer, FDM ASA or Plastic PBT GF30?
Plastic PBT GF30 is stiffer: Young's modulus 9.8 GPa against 2.45 GPa for FDM ASA, so the same part in Plastic PBT GF30 deflects less under the same load.
Which is lighter for the same job, FDM ASA or Plastic PBT GF30?
For the same stiffness or strength: Plastic PBT GF30 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
FDM ASA
Plastic PBT GF30
Stiff rod or tie (tension)
2.75x heavier
lighter
Stiff beam (bending)
37% heavier
lighter
Stiff panel or plate
9% heavier
lighter
Strong rod or tie
2.6x heavier
lighter
Strong beam
1.67x heavier
lighter
Strong panel or plate
33% 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 handles higher temperatures, FDM ASA or Plastic PBT GF30?
Plastic PBT GF30 does: 205 °C against 92 °C for FDM ASA, both HDT 1.8 MPa.
Which conducts heat better, FDM ASA or Plastic PBT GF30?
Plastic PBT GF30 conducts heat better: 0.27 W/m·K against 0.17 W/m·K for FDM ASA.
Which expands less with temperature?
Plastic PBT GF30 expands less: 25 µm/m·K against 95 µm/m·K for FDM ASA.