Formlabs Tough 1500 Resin Cartridge


Tough 1500 Resin for Resilient Prototyping

Tough 1500 Resin is the most resilient material in our functional family of Tough and Durable Resins. It produces stiff and pliable parts that bend and spring back quickly under cyclic loading.


Tough 1500 Resin has been evaluated for skin contact safety in accordance with ISO 10993-1, and has passed the requirements for the following endpoints:

  • ISO 10993-5: Not a cytotoxic
  • ISO 10993-10: Not an irritant
  • ISO 10993-10: Not a sensitizer

Tough 1500 Resin is ideal for:

  • Extended skin contact applications such as: wearables, personal protective equipment, and other consumer goods
  • Prototypes that repeatedly bend and quickly return to shape
  • Jigs and fixtures requiring repeated deflection
  • Simulating the strength and stiffness of polypropylene (PP)

Technical data:

Due to its high elongation and moderate modulus Tough 1500 Resin is ideal for parts that bend, but require high memory retention. When pushed to its stress limit, Tough 1500 parts will strain significantly before permanently deforming and ultimately breaking.



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Model RS-F2-TO15
Manufacturer Formlabs


Printer Compatibility Form 2, Form 3/3B
Resin Tank Compatibility Form 2 LT, Form 3 V2
Recommended Lifetime 24 months


Layer Thickness (Microns)
Form 2 100, 50
Form 3 100, 50


Form Wash Settings If parts printed with Tough 1500 Resin will be used for skin contact use, wash parts in ≥ 99% IPA for 20 minutes to comply with biocompatibility requirements.
Form Cure Settings 60 minutes at 70 C



  Green² Post-Cured³
Mechanical Properties    
Ultimate Tensile Strength 3771 psi 4786 psi
Tensile Modulus 136 ksi 218 ksi
Elongation at Break 69% 51%
Flexural Properties    
Flexural Strength 2175 psi 5656 psi
Flexural Modulus 58 ksi 203 ksi
Impact Properties    
Notched IZOD 1.3 ft-lbf/in 1.2 ft-lbf/in
Unnotched IZOD 17 ft-lbf/in 26 ft-lbf/in
Thermal Properties    
Heat Deflection Temp. @ 1.8 MPa 93 °F 113 °F
Heat Deflection Temp. @ 0.45 MPa 108 °F 126 °F
Thermal Expansion 63 µin/in/°F 54 µin/in/°F


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