Materials / Compare
FDM PAHT-CF vs. Plastic PETG
Compare FDM PAHT-CF vs. Plastic PETG strength, stiffness, weight and thermal properties.
| Try it on a partA bracket to run stress or thermal on, free in your browser | Open in LessCAD | Open in LessCAD |
|---|---|---|
| Mechanical | ||
| Yield strength | not given (tensile used) | 46.2MPasourcetypical |
| Ultimate tensile strength | 92MPasourcetypical | 46.2MPasourcetypical, peak stress (= stress at yield) |
| Flexural strength | 125MPasourcetypical1.58x stronger in bending | 78.9MPasourcetypical |
| Elongation at break | 8.4%sourcetypical | 7.6%sourcetypical |
| Young's modulus (stiffness) | 3.86GPasourcetypical1.99x stiffer | 1.94GPasourcetypical |
| Density | 1,060kg/m³sourcetypical20% lighter | 1,270kg/m³sourcetypical |
| Strength to weight | 86.8kN·m/kg2.39x higher | 36.4kN·m/kg |
| Stiffness to weight | 3.64MN·m/kg2.39x higher | 1.53MN·m/kg |
| Poisson's ratio | not sourced | not sourced |
| Shear modulus | not sourced | not sourced |
| Bulk modulus | not sourced | not sourced |
| Speed of sound | 1,908m/s | 1,236m/s |
| Thermal | ||
| Thermal conductivity | not sourced | 0.21W/m·Ksourcebase material: Eastman Eastar Copolyester 6763 (PETG), typical |
| Thermal expansion | not sourced | 51µm/m·Ksourcebase material: Eastman Eastar Copolyester 6763 (PETG), typical |
| 100 mm part over a 50 °C swing | not sourced | 255µm growth |
| Specific heat | not sourced | 1,300J/kg·Ksourcebase material: Eastman Eastar Copolyester 6763 (PETG), DSC at 60 °C (lowest temperature listed) |
| Heats up and cools (diffusivity) | not sourced | 0.127mm²/s |
| Thermal shock resistance | not sourced | not sourced |
| Melting point | 225°Csourcetypical | not sourced |
| Glass transition | 70°Csourcetypical | 77.4°Csourcetypical |
| Max service temperature | 170°CsourceHDT 1.8 MPa | 76.2°CsourceHDT 0.455 MPa (printed specimens) |
| Values for | 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. | Ultimaker PETG, 3D-printed specimens, XY (flat); Ultimaker S5 Pro, engineering intent profile, 0.15 mm layer height, AA 0.4 print core, 100% infill, Cura 4.9, printed one-at-a-time, conditioned >=24 h at room temperature. TDS v1.00, April 29, 2022. |
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 PAHT-CF and Plastic PETG are 3D printed: their properties depend on build direction and print settings; these are typical values.
Questions
Is FDM PAHT-CF stronger than Plastic PETG?
FDM PAHT-CF is stronger: its tensile strength is 92 MPa against yield strength 46.2 MPa for Plastic PETG (1.99x).
Which is lighter, FDM PAHT-CF or Plastic PETG?
FDM PAHT-CF is lighter: 1,060 kg/m³ against 1,270 kg/m³ for Plastic PETG.
Which is stiffer, FDM PAHT-CF or Plastic PETG?
FDM PAHT-CF is stiffer: Young's modulus 3.86 GPa against 1.94 GPa for Plastic PETG, so the same part in FDM PAHT-CF deflects less under the same load.
Which is lighter for the same job, FDM PAHT-CF or Plastic PETG?
For the same stiffness or strength: FDM PAHT-CF 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 PAHT-CF | Plastic PETG |
|---|---|---|
| Stiff rod or tie (tension) | lighter | 2.39x heavier |
| Stiff beam (bending) | lighter | 1.69x heavier |
| Stiff panel or plate | lighter | 1.51x heavier |
| Strong rod or tie | lighter | 2.39x heavier |
| Strong beam | lighter | 1.9x heavier |
| Strong panel or plate | lighter | 1.69x 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).