Materials / Compare
Nickel Inconel 718 vs. Plastic LCP GF30
Compare Nickel Inconel 718 vs. Plastic LCP GF30 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 | 115MPasourcetensile strength (ISO 527) |
| Flexural strength | not sourced | 184MPasourcetypical (ISO 178) |
| Elongation at break | 20%sourcetypical, 1.0 in. bar | 1.5%sourcetensile elongation (ISO 527) |
| Young's modulus (stiffness) | 200GPasourcetypical, 21 °C, annealed + aged | 11.5GPasourcetensile modulus (ISO 527) |
| Density | 8,221kg/m³sourcenominal, annealed and aged | 1,610kg/m³sourcetypical |
| Strength to weight | 147kN·m/kg2.06x higher | 71.4kN·m/kg |
| Stiffness to weight | 24.3MN·m/kg3.41x higher | 7.14MN·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 | 2,673m/s |
| Thermal | ||
| Thermal conductivity | 11.4W/m·Ksourcetypical, 21 °C, annealed + aged (calculated from resistivity per footnote a) | 0.5W/m·Ksourcehot disk (ISO 22007-2), temperature not stated |
| Thermal expansion | 13.2µm/m·Ksourcetypical, mean 21-93 °C, annealed + aged | 20µm/m·Ksourceflow direction (MD), mean 50-150 °C |
| 100 mm part over a 50 °C swing | 66µm growth1.52x less | 100µm growth |
| Specific heat | 435J/kg·Ksourcetypical, 21 °C | 839J/kg·KsourceASTM E1269, temperature not stated |
| Heats up and cools (diffusivity) | 3.19mm²/s8.61x faster | 0.37mm²/s |
| Thermal shock resistance | 3,680W/m | not sourced |
| Melting point | 1,260–1,336°Csourcemelting range | not sourced |
| Max service temperature | 704°Csourceupper use temperature stated by producer | 288°CsourceHDT 1.8 MPa (ISO 75) |
| 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 | Sumitomo Chemical SUMIKASUPER LCP E6006L (30% glass fibre; high strength, low shrinkage); SUMIKASUPER LCP Technical Note, Version 04 / Nov. 2023, typical values. |
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.
Questions
Is Nickel Inconel 718 stronger than Plastic LCP GF30?
Nickel Inconel 718 is stronger: its yield strength is 1,207 MPa against tensile strength 115 MPa for Plastic LCP GF30 (10.5x).
Which is lighter, Nickel Inconel 718 or Plastic LCP GF30?
Plastic LCP GF30 is lighter: 1,610 kg/m³ against 8,221 kg/m³ for Nickel Inconel 718.
Which is stiffer, Nickel Inconel 718 or Plastic LCP GF30?
Nickel Inconel 718 is stiffer: Young's modulus 200 GPa against 11.5 GPa for Plastic LCP GF30, 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 Plastic LCP GF30?
For the same stiffness or strength: Nickel Inconel 718 is lighter for a stiff rod or tie (tension), strong rod or tie; Plastic LCP GF30 is lighter for a stiff beam (bending), stiff panel or plate, strong beam, strong panel or plate.
| Part that must be | Nickel Inconel 718 | Plastic LCP GF30 |
|---|---|---|
| Stiff rod or tie (tension) | lighter | 3.41x heavier |
| Stiff beam (bending) | 22% heavier | lighter |
| Stiff panel or plate | 1.97x heavier | lighter |
| Strong rod or tie | lighter | 2.06x heavier |
| Strong beam | 7% heavier | lighter |
| Strong panel or plate | 1.58x 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).
Which conducts heat better, Nickel Inconel 718 or Plastic LCP GF30?
Nickel Inconel 718 conducts heat better: 11.4 W/m·K against 0.5 W/m·K for Plastic LCP GF30.
Which expands less with temperature?
Nickel Inconel 718 expands less: 13.2 µm/m·K against 20 µm/m·K for Plastic LCP GF30.