Materials / Compare
FDM PAHT-CF vs. Plastic PMMA
Compare FDM PAHT-CF vs. Plastic PMMA 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) | not given (tensile used) |
| Ultimate tensile strength | 92MPasourcetypical | 80MPasourcetypical, 23 °C |
| Compressive strength | not sourced | 110MPasourcecompressive yield stress, typical |
| Flexural strength | 125MPasourcetypical | 115MPasourcetypical |
| Elongation at break | 8.4%sourcetypical1.53x more ductile | 5.5%sourcetypical |
| Young's modulus (stiffness) | 3.86GPasourcetypical | 3.3GPasourcetypical, short-term |
| Density | 1,060kg/m³sourcetypical12% lighter | 1,190kg/m³sourcetypical |
| Strength to weight | 86.8kN·m/kg29% higher | 67.2kN·m/kg |
| Stiffness to weight | 3.64MN·m/kg31% higher | 2.77MN·m/kg |
| Poisson's ratio | not sourced | 0.37sourcetypical |
| Shear modulus | not sourced | 1.2GPa |
| Bulk modulus | not sourced | 4.23GPa |
| Speed of sound | 1,908m/s | 1,665m/s |
| Thermal | ||
| Thermal conductivity | not sourced | 0.19W/m·Ksourcetypical |
| Thermal expansion | not sourced | 70µm/m·Ksource0-50 °C |
| 100 mm part over a 50 °C swing | not sourced | 350µm growth |
| Specific heat | not sourced | 1,470J/kg·Ksourcetypical |
| Heats up and cools (diffusivity) | not sourced | 0.109mm²/s |
| Thermal shock resistance | not sourced | 41.5W/m |
| Melting point | 225°Csourcetypical | not sourced |
| Glass transition | 70°Csourcetypical | not sourced |
| Max service temperature | 170°CsourceHDT 1.8 MPa | 80°Csourcemax. permanent service 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. | Röhm PLEXIGLAS GS 0F00 cast acrylic sheet, typical values at 23 °C / 50 % RH (Röhm Technical Information Ref. No. 211-1) |
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 PMMA?
FDM PAHT-CF is stronger: its tensile strength is 92 MPa against 80 MPa for Plastic PMMA (15%).
Which is lighter, FDM PAHT-CF or Plastic PMMA?
FDM PAHT-CF is lighter: 1,060 kg/m³ against 1,190 kg/m³ for Plastic PMMA.
Which is stiffer, FDM PAHT-CF or Plastic PMMA?
FDM PAHT-CF is stiffer: Young's modulus 3.86 GPa against 3.3 GPa for Plastic PMMA, 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 PMMA?
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 PMMA |
|---|---|---|
| Stiff rod or tie (tension) | lighter | 31% heavier |
| Stiff beam (bending) | lighter | 21% heavier |
| Stiff panel or plate | lighter | 18% heavier |
| Strong rod or tie | lighter | 29% heavier |
| Strong beam | lighter | 23% heavier |
| Strong panel or plate | lighter | 20% 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 PMMA?
FDM PAHT-CF stretches further before it breaks: 8.4% elongation at break against 5.5% for Plastic PMMA.