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 eects props and models
FLELCL01
Prepared 01 . 07 . 2019
Rev 01 01 . 07 . 2019
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.
Material Properties Data
METRIC
1
Green Post-Cured
IMPERIAL
2
Green Post-Cured
1
2
METHOD
Ultimate tensile strength 1.61 MPa 3.23 MPa 234 psi 468 psi ASTM D 412-06 (A)
Stress at 50% elongation .92 MPa .94 MPa 133 psi 136 psi ASTM D 412-06 (A)
Stress at 100% elongation 1.54 MPa 1.59 MPa 223 psi 231 psi ASTM D 412-06 (A)
Elongation at Failure 100% 160% 100% 160% ASTM D 412-06 (A)
Compression set at 23C for 22 hrs 2% 2% 2% 2% ASTM D 395-03 (B)
Compression set at 70C for 22 hrs 3% 9% 3% 9% ASTM D 395-03 (B)
Tear strength 8.9 kN/m 19.1 kN/m 51 lbf/in 109 lbf/in ASTM D 624-00
Shore hardness 40A 50A 40A 50A ASTM 2240
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 µm,
Elastic settings, washed in
Form Wash for 20 minutes and
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
postcured with Form Cure at 60C
for 20 minutes.
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:
Mechanical Properties
24 hr
size gain (%)
Acetic Acid, 5 % <1 2.8 Hydrogen Peroxide (3 %) <1 2.2
Acetone 19.3 37.3 Isooctane <1 3.5
Isopropyl Alcohol 13.3 25.6 Mineral Oil, light <1 <1
Bleach, ~5 % NaOCl <1 2 Mineral Oil, heavy <1 <1
Butyl Acetate 18.2 39.6 Salt Water (3.5 % NaCl) <1 1.7
Diesel 1.2 4.2 Sodium hydroxide
Diethyl glycol monomethyl ether 12 28.6 Water <1 2.3
Hydrolic Oil <1 2 .1 Xylene 20.4 46.6
Skydrol 5 9.9 21.7 Strong Acid (HCI Conc) 14.2 39.4
24 hr
weight gain (%)
Mechanical Properties
(0.025 %, pH = 10) <1 2
24 hr
size gain (%)
24 hr
weight gain (%)
FORMLABS MATERIAL PROPERTIES – ELASTIC: Photopolymer Resin for Form 2 3D Printers 2
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