Materials / Compare
Plastic Polypropylene vs. SLA Resin Tough 2000
Compare Plastic Polypropylene 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 | 33MPasourcetypical, tensile stress at yield ISO 527 | 40.4MPasourcetypical |
| Ultimate tensile strength | not sourced | 40.4MPasourcetypical |
| Flexural strength | not sourced | 67MPasourcetypical |
| Elongation at break | not sourced | 79%sourcetypical |
| Young's modulus (stiffness) | 1.45GPasourcetypical, tensile modulus ISO 527 | 1.8GPasourcetypical |
| Density | 900kg/m³sourcetypical, 23 °C ISO 1183-1 | 1,090kg/m³sourcetypical |
| Strength to weight | 36.7kN·m/kg | 37.1kN·m/kg1% higher |
| Stiffness to weight | 1.61MN·m/kg | 1.65MN·m/kg2% higher |
| Poisson's ratio | 0.42sourcebase material: polypropylene homopolymer family (INEOS Olefins & Polymers USA, Typical Engineering Properties of Polypropylene) | not sourced |
| Shear modulus | 0.511GPa | not sourced |
| Bulk modulus | 3.02GPa | not sourced |
| Speed of sound | 1,269m/s | 1,285m/s |
| Thermal | ||
| Thermal conductivity | 0.17–0.22W/m·Ksourcebase material: polypropylene homopolymer family (INEOS Olefins & Polymers USA, Typical Engineering Properties of Polypropylene) | not sourced |
| Thermal expansion | 80–100µm/m·Ksourcebase material: polypropylene homopolymer family (INEOS Olefins & Polymers USA, Typical Engineering Properties of Polypropylene) | 134µm/m·Ksourcemean 0-150 °C |
| 100 mm part over a 50 °C swing | 450µm growth49% less | 671µm growth |
| Specific heat | not sourced | not sourced |
| Heats up and cools (diffusivity) | not sourced | not sourced |
| Thermal shock resistance | 28.6W/m | not sourced |
| Glass transition | not sourced | 112°CsourceDMA |
| Max service temperature | 90°CsourceHDT 0.45 MPa (ISO 75B), unannealed | 57°CsourceHDT 1.8 MPa |
| Values for | LyondellBasell Moplen HP501H polypropylene homopolymer (general purpose), typical ISO values | 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.
SLA Resin Tough 2000 is 3D printed: its properties depend on build direction and print settings; these are typical values.
Questions
Is Plastic Polypropylene stronger than SLA Resin Tough 2000?
SLA Resin Tough 2000 is stronger: its yield strength is 40.4 MPa against 33 MPa for Plastic Polypropylene (22%).
Which is lighter, Plastic Polypropylene or SLA Resin Tough 2000?
Plastic Polypropylene is lighter: 900 kg/m³ against 1,090 kg/m³ for SLA Resin Tough 2000.
Which is stiffer, Plastic Polypropylene or SLA Resin Tough 2000?
SLA Resin Tough 2000 is stiffer: Young's modulus 1.8 GPa against 1.45 GPa for Plastic Polypropylene, so the same part in SLA Resin Tough 2000 deflects less under the same load.
Which is lighter for the same job, Plastic Polypropylene or SLA Resin Tough 2000?
For the same stiffness or strength: Plastic Polypropylene is lighter for a stiff beam (bending), stiff panel or plate, strong beam, strong panel or plate; SLA Resin Tough 2000 is lighter for a stiff rod or tie (tension), strong rod or tie.
| Part that must be | Plastic Polypropylene | SLA Resin Tough 2000 |
|---|---|---|
| Stiff rod or tie (tension) | 2% heavier | lighter |
| Stiff beam (bending) | lighter | 9% heavier |
| Stiff panel or plate | lighter | 13% heavier |
| Strong rod or tie | 1% heavier | lighter |
| Strong beam | lighter | 6% heavier |
| Strong panel or plate | lighter | 9% 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 expands less with temperature?
Plastic Polypropylene expands less: 90 µm/m·K against 134 µm/m·K for SLA Resin Tough 2000.
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