High Temp Resin achieves a heat deflection temperature of 238 °C at 0.45 MPa after the full post-cure cycle, making it the highest heat deflection temperature of any Formlabs material. At 1.8 MPa, the heat deflection temperature reaches 101 °C after full post-cure.

Post-curing has a significant impact on thermal performance. In its green (uncured) state, the heat deflection temperature at 0.45 MPa is only 49 °C. A standard post-cure raises this to 120 °C. To achieve the maximum heat deflection temperature of 238 °C at 0.45 MPa, parts must undergo a two-stage post-cure: first in a Form Cure or Form Cure L unit, followed by a thermal post-cure of 180 minutes at 160 °C in a non-food oven.

Post-curing substantially increases stiffness and strength compared to the green state. Tensile modulus rises from 0.75 GPa green to 2.8 GPa after either post-cure cycle. Ultimate tensile strength increases from 21 MPa green to a peak of 58 MPa after a standard cure, settling at 49 MPa after the full high-temperature cure. Elongation at break decreases as the material stiffens, dropping from 14% green to 2.3% after the full post-cure cycle. You can download the full High Temp Resin Technical Data Sheet for complete property tables.

High Temp Resin is designed for detailed, precise prototypes and end-use parts that must maintain their shape and function under high temperatures. Key applications include molds and inserts, parts exposed to hot air, gas, and fluid flow, and heat-resistant mounts, housings, and fixtures.

Yes. Its high thermal stability makes it well-suited for molds and inserts, as well as other rapid tooling applications where parts will be exposed to elevated temperatures. Learn more about rapid tooling applications on the Formlabs website.

Post-processing involves two main steps. First, wash the part using isopropyl alcohol or an ether-based solution to remove uncured resin from the surface. Formlabs Form Wash or Form Wash L are both compatible. Second, post-cure the part using a Form Cure or Form Cure L unit. Post-curing is essential for parts to achieve their full strength and intended functional properties by completing the chemical reaction initiated during printing.

Wash time settings are available on the Formlabs support site for Form Wash and Form Wash L. Cure settings are available separately for Form Cure V1, Form Cure V2, Form Cure L V1, and Form Cure L V2.

Post-curing is essential for Engineering and Specialty Resins like High Temp Resin because it completes the chemical reaction initiated during printing, transforming the part from its green state into a fully finished component with its target mechanical and thermal properties. Without post-curing, parts will be significantly weaker and far less heat-resistant.

High Temp Resin is compatible with Form 4, Form 4B, Form 4L, Form 4BL, Form 3, Form 3L, Form 3B, Form 3BL, and Form 2. It uses SLA print technology with a minimum layer thickness of 25 microns.

You will need a compatible resin tank and build platform for your printer. Options include the Form 4 Resin Tank and Form 4 Mixer for Form 4 users, the Form 4L Resin Tank and Form 4L Mixer for Form 4L users, and the Form 3 Resin Tank V2.1 or Form 3L Resin Tank V3 for Form 3 Series printers.

Yes. Formlabs offers a 3D printed High Temp Resin sample part shipped directly to your office so you can evaluate the material quality firsthand. You can request a sample part on the product page. For pricing information, visit the Formlabs store or contact sales.