Materials / Compare
FDM PAHT-CF vs. Plastic UHMWPE
Compare FDM PAHT-CF vs. Plastic UHMWPE 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) | 20MPasourcetypical, tensile stress at yield ISO 527, 50 mm/min |
| Ultimate tensile strength | 92MPasourcetypical | 43MPasourcetypical, tensile stress at break ISO 527, 50 mm/min |
| Flexural strength | 125MPasourcetypical | not sourced |
| Elongation at break | 8.4%sourcetypical | 465%sourcetypical, nominal elongation at break ISO 527 |
| Young's modulus (stiffness) | 3.86GPasourcetypical | 0.66GPasourcetypical, tensile modulus ISO 527, 1 mm/min |
| Density | 1,060kg/m³sourcetypical | 930kg/m³sourcetypical14% lighter |
| Strength to weight | 86.8kN·m/kg4.04x higher | 21.5kN·m/kg |
| Stiffness to weight | 3.64MN·m/kg5.13x higher | 0.71MN·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 | 842m/s |
| Thermal | ||
| Thermal conductivity | not sourced | 0.4W/m·Ksourcetypical, unfilled (narrative value, generic Celanese UHMWPE) |
| Thermal expansion | not sourced | 200µm/m·Ksourcetypical, 20 to 100 °C (generic Celanese UHMWPE) |
| 100 mm part over a 50 °C swing | not sourced | 1,000µm growth |
| Specific heat | not sourced | not sourced |
| Heats up and cools (diffusivity) | not sourced | not sourced |
| Thermal shock resistance | not sourced | not sourced |
| Melting point | 225°Csourcetypical | 130–138°CsourceDSC 10 K/min |
| Glass transition | 70°Csourcetypical | not sourced |
| Max service temperature | 170°CsourceHDT 1.8 MPa | 80°Csourcerecommended max constant operating temperature |
| 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. | Celanese GUR 4120 (avg. molecular weight 4.7x10^6 g/mol), typical values on compression-molded specimens; CTE and thermal conductivity from Celanese's generic UHMWPE guide (grade not named) |
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 is 3D printed: its properties depend on build direction and print settings; these are typical values.
Questions
Is FDM PAHT-CF stronger than Plastic UHMWPE?
FDM PAHT-CF is stronger: its tensile strength is 92 MPa against yield strength 20 MPa for Plastic UHMWPE (4.6x).
Which is lighter, FDM PAHT-CF or Plastic UHMWPE?
Plastic UHMWPE is lighter: 930 kg/m³ against 1,060 kg/m³ for FDM PAHT-CF.
Which is stiffer, FDM PAHT-CF or Plastic UHMWPE?
FDM PAHT-CF is stiffer: Young's modulus 3.86 GPa against 0.66 GPa for Plastic UHMWPE, 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 UHMWPE?
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 UHMWPE |
|---|---|---|
| Stiff rod or tie (tension) | lighter | 5.13x heavier |
| Stiff beam (bending) | lighter | 2.12x heavier |
| Stiff panel or plate | lighter | 1.58x heavier |
| Strong rod or tie | lighter | 4.04x heavier |
| Strong beam | lighter | 2.43x heavier |
| Strong panel or plate | lighter | 1.88x 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).