Materials / Compare
Plastic PETG vs. SLA Resin Tough 2000
Compare Plastic PETG vs. SLA Resin Tough 2000 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 | 46.2MPasourcetypical14% stronger | 40.4MPasourcetypical |
| Ultimate tensile strength | 46.2MPasourcetypical, peak stress (= stress at yield) | 40.4MPasourcetypical |
| Flexural strength | 78.9MPasourcetypical18% stronger in bending | 67MPasourcetypical |
| Elongation at break | 7.6%sourcetypical | 79%sourcetypical10.4x more ductile |
| Young's modulus (stiffness) | 1.94GPasourcetypical | 1.8GPasourcetypical |
| Density | 1,270kg/m³sourcetypical | 1,090kg/m³sourcetypical17% lighter |
| Strength to weight | 36.4kN·m/kg | 37.1kN·m/kg2% higher |
| Stiffness to weight | 1.53MN·m/kg | 1.65MN·m/kg8% higher |
| Poisson's ratio | not sourced | not sourced |
| Shear modulus | not sourced | not sourced |
| Bulk modulus | not sourced | not sourced |
| Speed of sound | 1,236m/s | 1,285m/s |
| Thermal | ||
| Thermal conductivity | 0.21W/m·Ksourcebase material: Eastman Eastar Copolyester 6763 (PETG), typical | not sourced |
| Thermal expansion | 51µm/m·Ksourcebase material: Eastman Eastar Copolyester 6763 (PETG), typical | 134µm/m·Ksourcemean 0-150 °C |
| 100 mm part over a 50 °C swing | 255µm growth2.63x less | 671µm growth |
| Specific heat | 1,300J/kg·Ksourcebase material: Eastman Eastar Copolyester 6763 (PETG), DSC at 60 °C (lowest temperature listed) | not sourced |
| Heats up and cools (diffusivity) | 0.127mm²/s | not sourced |
| Thermal shock resistance | not sourced | not sourced |
| Glass transition | 77.4°Csourcetypical | 112°CsourceDMA |
| Max service temperature | 76.2°CsourceHDT 0.455 MPa (printed specimens) | 57°CsourceHDT 1.8 MPa |
| Values for | 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. | Formlabs Tough 2000 Resin V2 (FLTO2002), TDS Rev. 01 10/06/2025; printed on Form 4 at 100 µm, washed in Form Wash V2 10+5 min in >=99% IPA, post-cured 70 °C for 12 min in Form Cure V2. Orientation not stated. |
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 PETG and SLA Resin Tough 2000 are 3D printed: their properties depend on build direction and print settings; these are typical values.
Questions
Is Plastic PETG stronger than SLA Resin Tough 2000?
Plastic PETG is stronger: its yield strength is 46.2 MPa against 40.4 MPa for SLA Resin Tough 2000 (14%).
Which is lighter, Plastic PETG or SLA Resin Tough 2000?
SLA Resin Tough 2000 is lighter: 1,090 kg/m³ against 1,270 kg/m³ for Plastic PETG.
Which is stiffer, Plastic PETG or SLA Resin Tough 2000?
Plastic PETG is stiffer: Young's modulus 1.94 GPa against 1.8 GPa for SLA Resin Tough 2000, so the same part in Plastic PETG deflects less under the same load.
Which is lighter for the same job, Plastic PETG or SLA Resin Tough 2000?
For the same stiffness or strength: SLA Resin Tough 2000 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 PETG | SLA Resin Tough 2000 |
|---|---|---|
| Stiff rod or tie (tension) | 8% heavier | lighter |
| Stiff beam (bending) | 12% heavier | lighter |
| Stiff panel or plate | 14% heavier | lighter |
| Strong rod or tie | 2% heavier | lighter |
| Strong beam | 7% heavier | lighter |
| Strong panel or plate | 9% 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, Plastic PETG or SLA Resin Tough 2000?
SLA Resin Tough 2000 stretches further before it breaks: 79% elongation at break against 7.6% for Plastic PETG.
Which expands less with temperature?
Plastic PETG expands less: 51 µm/m·K against 134 µm/m·K for SLA Resin Tough 2000.