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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Bambu Lab PAHT-CF, TDS V3.0, printed specimens X-Y, dry state; nozzle 290 °C, bed 100 °C, 100 mm/s, 100% infill; annealed and dried 80 °C for 12 h before testing.
Plastic PBT GF30
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.
Ultradur B 4300 G6 Product InformationBASFPlastic PBT GF30 · Ultimate tensile strength: stress at break, 23 °CPlastic PBT GF30 · Flexural strength: typical, 23 °CPlastic PBT GF30 · Elongation at break: strain at break, 23 °CPlastic PBT GF30 · Young's modulus (stiffness): typical, 23 °CPlastic PBT GF30 · Density: typicalPlastic PBT GF30 · Thermal conductivity: typical (DIN 52612-1)Plastic PBT GF30 · Thermal expansion: longitudinal (flow), mean 23-55 °CPlastic PBT GF30 · Specific heat: typical, 23 °CPlastic PBT GF30 · Melting point: DSC (ISO 11357)Plastic PBT GF30 · Max service temperature: HDT 1.8 MPa
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.
FDM PAHT-CF is 3D printed: its properties depend on build direction and print settings; these are typical values.
Questions
Mechanical
Is FDM PAHT-CF stronger than Plastic PBT GF30?
Plastic PBT GF30 is stronger: its tensile strength is 140 MPa against 92 MPa for FDM PAHT-CF (1.52x).
Which is lighter, FDM PAHT-CF or Plastic PBT GF30?
FDM PAHT-CF is lighter: 1,060 kg/m³ against 1,530 kg/m³ for Plastic PBT GF30.
Which is stiffer, FDM PAHT-CF or Plastic PBT GF30?
Plastic PBT GF30 is stiffer: Young's modulus 9.8 GPa against 3.86 GPa for FDM PAHT-CF, so the same part in Plastic PBT GF30 deflects less under the same load.
Which is lighter for the same job, FDM PAHT-CF or Plastic PBT GF30?
For the same stiffness or strength: FDM PAHT-CF is lighter for a stiff panel or plate, strong beam, strong panel or plate; Plastic PBT GF30 is lighter for a stiff rod or tie (tension), stiff beam (bending), strong rod or tie.
Part that must be
FDM PAHT-CF
Plastic PBT GF30
Stiff rod or tie (tension)
1.76x heavier
lighter
Stiff beam (bending)
10% heavier
lighter
Stiff panel or plate
lighter
6% heavier
Strong rod or tie
5% heavier
lighter
Strong beam
lighter
9% heavier
Strong panel or plate
lighter
17% heavier
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, FDM PAHT-CF or Plastic PBT GF30?
FDM PAHT-CF stretches further before it breaks: 8.4% elongation at break against 3% for Plastic PBT GF30.
Thermal
Which handles higher temperatures, FDM PAHT-CF or Plastic PBT GF30?
Plastic PBT GF30 does: 205 °C against 170 °C for FDM PAHT-CF, both HDT 1.8 MPa.