ThermaX PEKK-A (polyetherketoneketone) is made using Arkema Kepstan® PEKK 60/40 copolymer and is one of the world's highest performing materials, while also being one of the easiest ultrapolymers to print.

ThermaX PEKK-A 3D printer filament

ThermaX PEKK-A (polyetherketoneketone) is made using Arkema Kepstan® PEKK and is one of the highest performing polymers in the plastics industry. The leading material in the PAEK family, PEKK has exceptionally good mechanical, thermal and chemical resistance properties. In addition, it is not only substantially easier to print than PEEK, but is also one of the easiest ultrapolymers to 3D print. Developed in collaboration with Arkema, a leading supplier of ultra-performance materials.

The benefits of ThermaX™ PEKK-A include:

• High thermal properties with a CUT of 260°C, Tg of 162°C and a Tm of 335°C
• Substantially easier to 3D print than PEEK
• Wide working window from 345-375°C
• Inherently flame resistant (UL94 V-0)
• Low smoke generation
• Excellent mechanical, thermal and chemical resistance

Recommended print settings:

• Extruder: 345-375°C
• Bed temperature: 120-140°C
• Bed preparation: nanopolymer adhesive or 3DXTECH polyimide tape
• Heated chamber: Recommended, heated to 70-150°C if possible
• Supports: ThermaX™ break-away HTS high temperature support is ideal for complex high temperature materials just like this
• Drying instructions: 120°C for 4 hours

3D Printed Parts to Relieve Stress:

Parts printed with PEKK can be stress relieved after printing to reduce print-induced stresses and increase the mechanical properties, dimensional stability, and chemical resistance of the printed part. This process does not anneal or induce crystallinity in PEKK-A as it is a mostly amorphous version of PEKK. If annealing and inducing crystallinity is your goal, then we suggest using our ThermaX™ PEKK-C filament made from PEKK 70/30 copolymer.