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Elastic

Product catalog summary

Material Overview: Elastic Resin is Formlabs' softest engineering resin with a 50A Shore durometer, ideal for prototyping parts typically made with silicone. It is designed for applications requiring flexibility, such as wearables, consumer goods, medical models, robotics, and special effects props. The resin is priced at $199 per liter.

Material Properties: The resin exhibits the following mechanical properties when tested according to ASTM standards:

Ultimate tensile strength: 3.23 MPa (post-cured)
Stress at 50% elongation: 0.94 MPa (post-cured)
Stress at 100% elongation: 1.59 MPa (post-cured)
Elongation at failure: 160% (post-cured)
Compression set at 23°C for 22 hours: 2%
Compression set at 70°C for 22 hours: 9%
Tear strength: 19.1 kN/m (post-cured)
Shore hardness: 50A (post-cured)

These properties can vary based on part geometry, print orientation, print settings, and temperature.

Solvent Compatibility: The resin's compatibility with various solvents was tested by measuring size and weight gain after 24 hours of immersion. Key findings include:

Acetone: 19.3% size gain, 37.3% weight gain
Isopropyl Alcohol: 13.3% size gain, 25.6% weight gain
Xylene: 20.4% size gain, 46.6% weight gain
Minimal size and weight gain with water, mineral oils, and salt water

Testing Conditions: Parts were printed using Form 2 printers at 100 µm settings, washed in Form Wash for 20 minutes, and post-cured with Form Cure at 60°C for 20 minutes. Tensile and tear testing were conducted at 23°C with specific specimen types and crosshead speeds.

Catalog excerpts

MATERIAL DATA SHEET Elastic Elastic Resin for Soft Flexible Parts Our softest Engineering Resin, this 50A Shore durometer material is suitable for prototyping parts normally produced with silicone. Choose Elastic Resin for parts that will bend, stretch, compress, and hold up to repeated cycles without tearing. Wearables and consumer goods prototyping Medical models and devices Compliant features for robotics Special effects props and models To the best of our knowledge the information contained herein is accurate. However, Formlabs, Inc. makes no warranty, expressed or implied, regarding the accuracy of these results to be obtained from the use thereof.

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1 Material properties can vary with part geometry, print orientation, print settings and temperature. 2 Data was obtained from parts printed using Form 2, 100 pm, Elastic settings, washed in Form Wash for 20 minutes and postcured with Form Cure at 60C for 20 minutes. 3 Tensile testing was performed after 3+ hours at 23 °C, using a Die C dumbbell and 20 in/min cross head speed. 4 Tear testing was performed after 3+ hours at 23 °C, using a Die C tear specimen and a 20 in/min cross head speed FORMLABS MATERIAL PROPERTIES - ELASTIC: Photopolymer Resin for Form 2 3D Printers

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Elastic

Elastic

Catalog excerpts

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