SLA – Durable Resin
Durable Resin is a type of 3D printing material designed for Stereolithography (SLA) technology, known for its toughness, impact resistance, and smooth surface finish. It is engineered to simulate the properties of polypropylene or ABS, making it ideal for parts that require a balance of strength, flexibility, and durability.
Key Material Facts:
- Durable Resin is a pliable, impact-resistant, and lubricious material for squeezable parts and low-friction assemblies.
- Parts printed in Durable Resin are robust and have low friction, with similar strength and stiffness to polyethylene (PE) and a coefficient of friction is comparable to Delrin® (POM).
- Parts can be printed solid and air / fluid tight right off the printer, no sealing required
- Compatible with assembly features including:
- Glue Joints / light welding
- Printed In Threads (However Helicoils are recommended)
Common Applications:
- Squeezable prototypes
- Jigs and fixtures undergoing significant impacts
- Low friction assemblies and non-degrading surfaces (like ball joints)
- Snap-fit parts and flexures
Material Reference Data:
- For more information on how the SLA printing process works please check out this page.
- For SLA part design trick and tips check out this page.
- Material manufacturers website
SLA – Durable Resin: Technical specifications
Mechanical Properties – Post-cured for 120 minutes at 60 °C.
| Property Description | Measurement (Metric) | Measurement (English) |
| Ultimate Tensile Strength (MPa | PSI) | 28 | 3980 |
| Tensile Modulus (GPa | KSI) | 1.0 | 149 |
| Elongation at Break | 55% | 55% |
| Flexural Strength (MPa | PSI) | 24 | 3420 |
| Flexural Modulus (GPa | KSI) | 0.66 | 94.1 |
| Notched Izod (J/m | ft-lbf/in) | 114 | 2.13 |
| Unnotched Izod (J/m | ft-lbf/in) | 710 | 13.3 |
| Heat Deflection Temperature – Post-Cured 5 min (Ambient) | 41 °C @ 0.45 MPa (66 PSI) | 105 °F @ 0.45 MPa (66 PSI) |
| Thermal Expansion (0-150°C) | 106 μm/m/°C | 59 μin/in/°F |
SLA – Durable Resin Solvent Compatibility
Percent weight gain over 24 hours for a printed and post-cured 1 x 1 x 1 cm cube immersed in respective solvent
| Solvent | 24 hr weight gain, % |
| Acetic Acid 5% | 1.3 |
| Acetone | Sample cracked |
| Bleach ~5% NaOCl | < 1 |
| Butyl Acetate | 7.9 |
| Diesel Fuel | < 1 |
| Diethyl glycol Monomethyl Ether | 7.8 |
| Hydraulic Oil | < 1 |
| Hydrogen peroxide (3%) | 1 |
| Isooctane (aka gasoline) | < 1 |
| Isopropyl Alcohol | 5.1 |
| Mineral oil (Light) | < 1 |
| Mineral oil (Heavy) | < 1 |
| Salt Water (3.5% NaCl) | < 1 |
| Skydrol 5 | 1.3 |
| Sodium Hydroxide solution (0.025% PH 10) | < 1 |
| Strong Acid (HCl conc) | Distorted |
| Water | < 1 |
| Xylene | 6.5 |
SLA – Durable Resin: Part Gallery
