Materials / Compare
Plastic Polypropylene vs. SLA Resin Standard
Compare Plastic Polypropylene vs. SLA Resin Standard strength, stiffness, weight and thermal properties.
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Plastic PolypropyleneBulk polymer (molded or machined)
SLA Resin Standard3D printed (SLA resin)
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|---|---|---|
| Mechanical | ||
| Yield strength | 33MPasourcetypical, tensile stress at yield ISO 527 | not given (tensile used) |
| Ultimate tensile strength | not sourced | 60MPasourcetypical |
| Flexural strength | not sourced | 105MPasourcetypical |
| Elongation at break | not sourced | 8%sourcetypical |
| Young's modulus (stiffness) | 1.45GPasourcetypical, tensile modulus ISO 527 | 2.75GPasourcetypical |
| Density | 900kg/m³sourcetypical, 23 °C ISO 1183-1 | not sourced |
| Strength to weight | 36.7kN·m/kg | not sourced |
| Stiffness to weight | 1.61MN·m/kg | not sourced |
| 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 | not sourced |
| 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) | not sourced |
| 100 mm part over a 50 °C swing | 450µm growth | not sourced |
| Specific heat | not sourced | not sourced |
| Heats up and cools (diffusivity) | not sourced | not sourced |
| Thermal shock resistance | 28.6W/m | not sourced |
| Max service temperature | 90°CsourceHDT 0.45 MPa (ISO 75B), unannealed | 59°CsourceHDT 1.8 MPa |
| Values for | LyondellBasell Moplen HP501H polypropylene homopolymer (general purpose), typical ISO values | Formlabs Clear Resin V5 (FLGPCL05), TDS Rev. 01 March 20, 2024; printed on Form 4 at 100 µm, washed 5 min in >=99% IPA, post-cured 15 min at 60 °C in Form Cure. 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 Standard is 3D printed: its properties depend on build direction and print settings; these are typical values.
Questions
Is Plastic Polypropylene stronger than SLA Resin Standard?
SLA Resin Standard is stronger: its tensile strength is 60 MPa against yield strength 33 MPa for Plastic Polypropylene (1.82x).
Which is stiffer, Plastic Polypropylene or SLA Resin Standard?
SLA Resin Standard is stiffer: Young's modulus 2.75 GPa against 1.45 GPa for Plastic Polypropylene, so the same part in SLA Resin Standard deflects less under the same load.
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