Materials / Compare
Nickel Inconel 718 vs. FDM PAHT-CF
Compare Nickel Inconel 718 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 | 1,207MPasourcetypical, 1.0 in. hot-rolled bar, 0.2% offset | not given (tensile used) |
| Ultimate tensile strength | 1,389MPasourcetypical, 1.0 in. bar | 92MPasourcetypical |
| Flexural strength | not sourced | 125MPasourcetypical |
| Elongation at break | 20%sourcetypical, 1.0 in. bar | 8.4%sourcetypical |
| Young's modulus (stiffness) | 200GPasourcetypical, 21 °C, annealed + aged | 3.86GPasourcetypical |
| Density | 8,221kg/m³sourcenominal, annealed and aged | 1,060kg/m³sourcetypical |
| Strength to weight | 147kN·m/kg1.69x higher | 86.8kN·m/kg |
| Stiffness to weight | 24.3MN·m/kg6.68x higher | 3.64MN·m/kg |
| Poisson's ratio | 0.294sourcetypical, 21 °C, annealed + aged | not sourced |
| Shear modulus | 77.3GPa | not sourced |
| Bulk modulus | 162GPa | not sourced |
| Speed of sound | 4,932m/s | 1,908m/s |
| Thermal | ||
| Thermal conductivity | 11.4W/m·Ksourcetypical, 21 °C, annealed + aged (calculated from resistivity per footnote a) | not sourced |
| Thermal expansion | 13.2µm/m·Ksourcetypical, mean 21-93 °C, annealed + aged | not sourced |
| 100 mm part over a 50 °C swing | 66µm growth | not sourced |
| Specific heat | 435J/kg·Ksourcetypical, 21 °C | not sourced |
| Heats up and cools (diffusivity) | 3.19mm²/s | not sourced |
| Thermal shock resistance | 3,680W/m | not sourced |
| Melting point | 1,260–1,336°Csourcemelting range | 225°Csourcetypical |
| Glass transition | not sourced | 70°Csourcetypical |
| Max service temperature | 704°Csourceupper use temperature stated by producer | 170°CsourceHDT 1.8 MPa |
| Values for | INCONEL alloy 718, standard grade, 1750 °F/1 hr anneal + 1325 °F/8 hr F.C. to 1150 °F aged; Special Metals bulletin SMC-045 typical values | 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 Nickel Inconel 718 stronger than FDM PAHT-CF?
Nickel Inconel 718 is stronger: its yield strength is 1,207 MPa against tensile strength 92 MPa for FDM PAHT-CF (13.1x).
Which is lighter, Nickel Inconel 718 or FDM PAHT-CF?
FDM PAHT-CF is lighter: 1,060 kg/m³ against 8,221 kg/m³ for Nickel Inconel 718.
Which is stiffer, Nickel Inconel 718 or FDM PAHT-CF?
Nickel Inconel 718 is stiffer: Young's modulus 200 GPa against 3.86 GPa for FDM PAHT-CF, so the same part in Nickel Inconel 718 deflects less under the same load.
Which is lighter for the same job, Nickel Inconel 718 or FDM PAHT-CF?
For the same stiffness or strength: Nickel Inconel 718 is lighter for a stiff rod or tie (tension), strong rod or tie; FDM PAHT-CF is lighter for a stiff beam (bending), stiff panel or plate, strong beam, strong panel or plate.
| Part that must be | Nickel Inconel 718 | FDM PAHT-CF |
|---|---|---|
| Stiff rod or tie (tension) | lighter | 6.68x heavier |
| Stiff beam (bending) | 8% heavier | lighter |
| Stiff panel or plate | 2.08x heavier | lighter |
| Strong rod or tie | lighter | 1.69x heavier |
| Strong beam | 39% heavier | lighter |
| Strong panel or plate | 2.14x 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).