Materials / Compare
Plastic POM/Acetal vs. SLA Resin Standard
Compare Plastic POM/Acetal vs. SLA Resin Standard 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 | 69MPasourcetypical (single ASTM D638 tensile strength) | not given (tensile used) |
| Ultimate tensile strength | 69MPasourcetypical15% stronger | 60MPasourcetypical |
| Compressive strength | 124MPasourcecompressive stress at 10% deformation | not sourced |
| Flexural strength | 99MPasourceflexural yield strength, typical | 105MPasourcetypical |
| Elongation at break | 75%sourcetypical9.38x more ductile | 8%sourcetypical |
| Young's modulus (stiffness) | 2.8GPasourcetypical | 2.75GPasourcetypical |
| Density | 1,420kg/m³sourcetypical (DuPont product information for Delrin 100 NC010; 'The data listed here fall within the normal range of product properties') | not sourced |
| Strength to weight | 48.6kN·m/kg | not sourced |
| Stiffness to weight | 1.97MN·m/kg | not sourced |
| Poisson's ratio | 0.35sourcetypical | not sourced |
| Shear modulus | 1.04GPa | not sourced |
| Bulk modulus | 3.11GPa | not sourced |
| Speed of sound | 1,404m/s | not sourced |
| Thermal | ||
| Thermal conductivity | 0.4W/m·Ksourcetypical | not sourced |
| Thermal expansion | 122µm/m·Ksourcemean, 29 to 60 °C | not sourced |
| 100 mm part over a 50 °C swing | 610µm growth | not sourced |
| Specific heat | 1,465J/kg·Ksourceaverage -18 to 100 °C, Delrin acetal resins (not grade-specific) | not sourced |
| Heats up and cools (diffusivity) | 0.192mm²/s | not sourced |
| Thermal shock resistance | 52.5W/m | not sourced |
| Melting point | 175°Csourcecrystalline melting point | not sourced |
| Max service temperature | 125°CsourceHDT 1.8 MPa (annealed) | 59°CsourceHDT 1.8 MPa |
| Values for | DuPont Delrin 100 acetal homopolymer, Table 2 'Typical Properties of Delrin Acetal Resins' (ASTM methods), Delrin Design Guide Module III hosted on delrin.com | 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 POM/Acetal stronger than SLA Resin Standard?
Plastic POM/Acetal is stronger: its yield strength is 69 MPa against tensile strength 60 MPa for SLA Resin Standard (15%).
Which is stiffer, Plastic POM/Acetal or SLA Resin Standard?
Plastic POM/Acetal is stiffer: Young's modulus 2.8 GPa against 2.75 GPa for SLA Resin Standard, so the same part in Plastic POM/Acetal deflects less under the same load.
Which is more ductile, Plastic POM/Acetal or SLA Resin Standard?
Plastic POM/Acetal stretches further before it breaks: 75% elongation at break against 8% for SLA Resin Standard.
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