Materials / Compare
Plastic Nylon PA66 vs. FDM PAHT-CF
Compare Plastic Nylon PA66 vs. FDM PAHT-CF 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 | 85MPasourcetypical, dry | not given (tensile used) |
| Ultimate tensile strength | not sourced | 92MPasourcetypical |
| Flexural strength | not sourced | 125MPasourcetypical |
| Elongation at break | 30%sourcenominal strain at break, dry | 8.4%sourcetypical |
| Young's modulus (stiffness) | 3GPasourcetypical, dry | 3.86GPasourcetypical |
| Density | 1,130kg/m³sourcetypical | 1,060kg/m³sourcetypical |
| Strength to weight | 75.2kN·m/kg | 86.8kN·m/kg15% higher |
| Stiffness to weight | 2.65MN·m/kg | 3.64MN·m/kg37% higher |
| Poisson's ratio | 0.4sourcebase material: unfilled polyamide (PA), conditioned, maker design-guide family value (Covestro Table 3-1) | not sourced |
| Shear modulus | 1.07GPa | not sourced |
| Bulk modulus | 5GPa | not sourced |
| Speed of sound | 1,629m/s | 1,908m/s |
| Thermal | ||
| Thermal conductivity | 0.33W/m·Ksourcetypical | not sourced |
| Thermal expansion | 98µm/m·Ksourcelongitudinal, 23-55 °C | not sourced |
| 100 mm part over a 50 °C swing | 490µm growth | not sourced |
| Specific heat | 1,700J/kg·Ksourcetypical | not sourced |
| Heats up and cools (diffusivity) | 0.172mm²/s | not sourced |
| Thermal shock resistance | 57.2W/m | not sourced |
| Melting point | 260°CsourceDSC | 225°Csourcetypical |
| Glass transition | not sourced | 70°Csourcetypical |
| Max service temperature | 101°CsourceIEC 60216 temperature index, 20000 h | 170°CsourceHDT 1.8 MPa |
| Values for | BASF Ultramid A3K (PA66, unreinforced injection-moulding grade), Product Information 02/2026, dry values (ISO methods) | 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. |
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 Plastic Nylon PA66 stronger than FDM PAHT-CF?
FDM PAHT-CF is stronger: its tensile strength is 92 MPa against yield strength 85 MPa for Plastic Nylon PA66 (8%).
Which is lighter, Plastic Nylon PA66 or FDM PAHT-CF?
FDM PAHT-CF is lighter: 1,060 kg/m³ against 1,130 kg/m³ for Plastic Nylon PA66.
Which is stiffer, Plastic Nylon PA66 or FDM PAHT-CF?
FDM PAHT-CF is stiffer: Young's modulus 3.86 GPa against 3 GPa for Plastic Nylon PA66, so the same part in FDM PAHT-CF deflects less under the same load.
Which is lighter for the same job, Plastic Nylon PA66 or FDM PAHT-CF?
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 | Plastic Nylon PA66 | FDM PAHT-CF |
|---|---|---|
| Stiff rod or tie (tension) | 37% heavier | lighter |
| Stiff beam (bending) | 21% heavier | lighter |
| Stiff panel or plate | 16% heavier | lighter |
| Strong rod or tie | 15% heavier | lighter |
| Strong beam | 12% heavier | lighter |
| Strong panel or plate | 11% 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).