Formlabs Flame Retardant Resin (Form 4).
Flame Retardant Resin Form 3 1 kg

RS-C2-FRGR-01

Formlabs | Flame Retardant Resin

$249.00

Flame Retardant Resin is a specialty material certified with a UL 94 Blue Card, designed for producing self-extinguishing, halogen-free parts with excellent flame, smoke, and toxicity (FST) performance. It enables easy 3D printing of flame-retardant, heat-resistant, stiff, and creep-resistant components that maintain long-term reliability in demanding indoor and industrial environments exposed to high heat or ignition sources.

This resin meets key standards, including UL 94 V-0 at 3 mm thickness (flammability), FAR 25.853 Appendix F, Part I (flammability), and ASTM E662 (FST).
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Post-cured at 70ºC for 60 minutes

Heat Deflection Temperature 0.45 MPa

94ºC

Heat Deflection Temperature 1.8 MPa

71ºC

Tensile Modulus

2.9 GPa

Ultimate Tensile Strength

38.5 MPa

Elongation at Break

9.4%

Notched Izod

22.1 J/m

Post-cured at 80ºC for 120 minutes

Heat Deflection Temperature 0.45 MPa

111ºC

Heat Deflection Temperature 1.8 MPa

83ºC

Tensile Modulus

3.1 GPa

Ultimate Tensile Strength

41.2 MPa

Elongation at Break

7.1%

Notched Izod

22.4 J/m

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Need more information?

We’re committed to providing expert insights and responsive service to guide you every step of the way. To get started, simply fill out the form below and we’ll be in touch shortly.

Flame Retardant Resin by Formlabs

Experience the Benefits

Rapid production for regulated industries

Enables quick 3D printing of compliant parts (electronics, aerospace, automotive, industrial) reducing lead times and cost.

High heat and creep resistance

Features a heat deflection temperature up to ~111 °C and good resistance to long-term deformation.

Certified flame-retardant performance

Meets UL 94 V-0 and other flame, smoke & toxicity standards, enabling use in regulated environments.

Injection-mold quality surface finish

Produces parts with smooth surfaces, fine detail and strong isotropic properties ideal for end-use production.

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frequently asked questions

What is Flame Retardant Resin used for?

It’s designed for end-use parts in aerospace, automotive, electronics, and industrial applications where fire safety compliance is essential.

What certifications does Flame Retardant Resin meet?

It’s UL 94 V-0 rated, meaning it self-extinguishes within 10 seconds without dripping, and meets key flame, smoke, and toxicity standards.

What are the key mechanical and thermal properties of Flame Retardant Resin?

It has a tensile strength of ~56 MPa, modulus of ~2.8 GPa, and a heat deflection temperature up to 111 °C, ensuring rigidity and stability.

Can Flame Retardant Resin printed parts be used for functional or end-use applications?

Yes. The resin is strong, heat-resistant, and certified for functional, safety-critical components in industrial environments.

Which printers are compatible with Flame Retardant Resin?

It’s validated for Form 3+, Form 3B+, Form 3L, and Form 4 printers, optimized for rapid, compliant part production.