Materials / Compare
FDM HIPS vs. Plastic PETG
Compare FDM HIPS 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 | not given (tensile used) | 46.2MPasourcetypical |
| Ultimate tensile strength | 18.4MPasourcetypical | 46.2MPasourcetypical, peak stress (= stress at yield) |
| Flexural strength | 31.8MPasourcetypical | 78.9MPasourcetypical2.48x stronger in bending |
| Elongation at break | 1.4%sourcetypical | 7.6%sourcetypical5.43x more ductile |
| Young's modulus (stiffness) | 1.59GPasourcetypical | 1.94GPasourcetypical22% stiffer |
| Density | 1,023kg/m³sourcetypical24% lighter | 1,270kg/m³sourcetypical |
| Strength to weight | 18kN·m/kg | 36.4kN·m/kg2.02x higher |
| Stiffness to weight | 1.55MN·m/kg2% higher | 1.53MN·m/kg |
| Poisson's ratio | not sourced | not sourced |
| Shear modulus | not sourced | not sourced |
| Bulk modulus | not sourced | not sourced |
| Speed of sound | 1,246m/s | 1,236m/s |
| Thermal | ||
| Thermal conductivity | 0.17W/m·Ksourcebase material: INEOS Styrolution PS 486N injection-molding HIPS, typical | 0.21W/m·Ksourcebase material: Eastman Eastar Copolyester 6763 (PETG), typical |
| Thermal expansion | 80µm/m·Ksourcebase material: INEOS Styrolution PS 486N injection-molding HIPS, typical | 51µm/m·Ksourcebase material: Eastman Eastar Copolyester 6763 (PETG), typical |
| 100 mm part over a 50 °C swing | 400µm growth | 255µm growth1.57x less |
| Specific heat | not sourced | 1,300J/kg·Ksourcebase material: Eastman Eastar Copolyester 6763 (PETG), DSC at 60 °C (lowest temperature listed) |
| Heats up and cools (diffusivity) | not sourced | 0.127mm²/s |
| Thermal shock resistance | not sourced | not sourced |
| Glass transition | 99°Csourcetypical | 77.4°Csourcetypical |
| Max service temperature | 86°CsourceHDT 1.8 MPa | 76.2°CsourceHDT 0.455 MPa (printed specimens) |
| Values for | BASF Forward AM (BASF 3D Printing Solutions) Ultrafuse HiPS, TDS v2.2 (13.11.2019), printed specimens, XY 'Flat'. Specimen print settings are not stated; recommended processing on the sheet: nozzle 240-260 °C, bed 100-120 °C, 40-80 mm/s. Product is discontinued (Forward AM product page) but the TDS is still served by Forward AM. | 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.
FDM HIPS and Plastic PETG are 3D printed: their properties depend on build direction and print settings; these are typical values.
Questions
Is FDM HIPS stronger than Plastic PETG?
Plastic PETG is stronger: its yield strength is 46.2 MPa against tensile strength 18.4 MPa for FDM HIPS (2.51x).
Which is lighter, FDM HIPS or Plastic PETG?
FDM HIPS is lighter: 1,023 kg/m³ against 1,270 kg/m³ for Plastic PETG.
Which is stiffer, FDM HIPS or Plastic PETG?
Plastic PETG is stiffer: Young's modulus 1.94 GPa against 1.59 GPa for FDM HIPS, so the same part in Plastic PETG deflects less under the same load.
Which is lighter for the same job, FDM HIPS or Plastic PETG?
For the same stiffness or strength: FDM HIPS is lighter for a stiff rod or tie (tension), stiff beam (bending), stiff panel or plate; Plastic PETG is lighter for a strong rod or tie, strong beam, strong panel or plate.
| Part that must be | FDM HIPS | Plastic PETG |
|---|---|---|
| Stiff rod or tie (tension) | lighter | 2% heavier |
| Stiff beam (bending) | lighter | 12% heavier |
| Stiff panel or plate | lighter | 16% heavier |
| Strong rod or tie | 2.02x heavier | lighter |
| Strong beam | 49% heavier | lighter |
| Strong panel or plate | 28% 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 is more ductile, FDM HIPS or Plastic PETG?
Plastic PETG stretches further before it breaks: 7.6% elongation at break against 1.4% for FDM HIPS.
Which conducts heat better, FDM HIPS or Plastic PETG?
Plastic PETG conducts heat better: 0.21 W/m·K against 0.17 W/m·K for FDM HIPS.
Which expands less with temperature?
Plastic PETG expands less: 51 µm/m·K against 80 µm/m·K for FDM HIPS.