Materials / Compare
Plastic Nylon vs. Plastic PETG
Compare Plastic Nylon vs. Plastic PETG 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 | 63.1MPasourcetypical37% stronger | 46.2MPasourcetypical |
| Ultimate tensile strength | 63.1MPasourcetypical, peak stress (= stress at yield)37% stronger | 46.2MPasourcetypical, peak stress (= stress at yield) |
| Flexural strength | 82.9MPasourcetypical | 78.9MPasourcetypical |
| Elongation at break | not sourced | 7.6%sourcetypical |
| Young's modulus (stiffness) | 2.33GPasourcetypical20% stiffer | 1.94GPasourcetypical |
| Density | 1,140kg/m³sourcetypical11% lighter | 1,270kg/m³sourcetypical |
| Strength to weight | 55.4kN·m/kg1.52x higher | 36.4kN·m/kg |
| Stiffness to weight | 2.04MN·m/kg34% higher | 1.53MN·m/kg |
| Poisson's ratio | 0.4sourcebase material: unfilled polyamide (PA), conditioned, maker design-guide family value (Covestro Table 3-1) | not sourced |
| Shear modulus | 0.833GPa | not sourced |
| Bulk modulus | 3.89GPa | not sourced |
| Speed of sound | 1,430m/s | 1,236m/s |
| Thermal | ||
| Thermal conductivity | 0.33W/m·Ksourcebase material: unreinforced BASF Ultramid PA66 (A3K) and PA6 (B3S), 23 C (same value for both) | 0.21W/m·Ksourcebase material: Eastman Eastar Copolyester 6763 (PETG), typical |
| Thermal expansion | 98–102µm/m·Ksourcebase material: unreinforced BASF Ultramid PA66 (A3K, 98) and PA6 (B3S, 102), 23-55 C | 51µm/m·Ksourcebase material: Eastman Eastar Copolyester 6763 (PETG), typical |
| 100 mm part over a 50 °C swing | 500µm growth | 255µm growth1.96x less |
| Specific heat | 1,700J/kg·Ksourcebase material: unreinforced BASF Ultramid PA66 (A3K) and PA6 (B3S), 23 C (same value for both) | 1,300J/kg·Ksourcebase material: Eastman Eastar Copolyester 6763 (PETG), DSC at 60 °C (lowest temperature listed) |
| Heats up and cools (diffusivity) | 0.17mm²/s34% faster | 0.127mm²/s |
| Thermal shock resistance | 53.6W/m | not sourced |
| Melting point | 188°Csourcetypical | not sourced |
| Glass transition | 55.1°Csourcetypical | 77.4°Csourcetypical |
| Max service temperature | 89.2°CsourceHDT 0.455 MPa (printed specimens)17% hotter | 76.2°CsourceHDT 0.455 MPa (printed specimens) |
| Values for | Ultimaker Nylon, 3D-printed specimens, XY (flat), conditioned >=24 h at room temperature; Ultimaker S5 Pro, engineering intent profile, 0.15 mm layer height, AA 0.4 print core, 100% infill, Cura 4.9, printed one-at-a-time, conditioned >=24 h at room temperature. TDS v2.00, April 20, 2022. | Ultimaker PETG, 3D-printed specimens, XY (flat); Ultimaker S5 Pro, engineering intent profile, 0.15 mm layer height, AA 0.4 print core, 100% infill, Cura 4.9, printed one-at-a-time, conditioned >=24 h at room temperature. TDS v1.00, April 29, 2022. |
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.
Plastic Nylon and Plastic PETG are 3D printed: their properties depend on build direction and print settings; these are typical values.
Questions
Is Plastic Nylon stronger than Plastic PETG?
Plastic Nylon is stronger: its yield strength is 63.1 MPa against 46.2 MPa for Plastic PETG (37%).
Which is lighter, Plastic Nylon or Plastic PETG?
Plastic Nylon is lighter: 1,140 kg/m³ against 1,270 kg/m³ for Plastic PETG.
Which is stiffer, Plastic Nylon or Plastic PETG?
Plastic Nylon is stiffer: Young's modulus 2.33 GPa against 1.94 GPa for Plastic PETG, so the same part in Plastic Nylon deflects less under the same load.
Which is lighter for the same job, Plastic Nylon or Plastic PETG?
For the same stiffness or strength: Plastic Nylon 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 | Plastic PETG |
|---|---|---|
| Stiff rod or tie (tension) | lighter | 34% heavier |
| Stiff beam (bending) | lighter | 22% heavier |
| Stiff panel or plate | lighter | 18% heavier |
| Strong rod or tie | lighter | 1.52x heavier |
| Strong beam | lighter | 37% heavier |
| Strong panel or plate | lighter | 30% 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 handles higher temperatures, Plastic Nylon or Plastic PETG?
Plastic Nylon does: 89.2 °C against 76.2 °C for Plastic PETG, both HDT 0.455 MPa (printed specimens).
Which conducts heat better, Plastic Nylon or Plastic PETG?
Plastic Nylon conducts heat better: 0.33 W/m·K against 0.21 W/m·K for Plastic PETG.
Which expands less with temperature?
Plastic PETG expands less: 51 µm/m·K against 100 µm/m·K for Plastic Nylon.