PEKK-A-CF20 | Industrial Grade Exclusive Reinforced Filament

PEKK-A-CF20 (PolyEtherKetoneKetone) is made possible using PEKK (60/40 copolymer) and 20% high modulus chopped carbon fiber.  This combination makes for one of the highest-performance polymer compounds in the world. A leading material in the PAEK family, PEKK has exceptionally good mechanical, thermal, and chemical resistance properties. It is also not only substantially easier to print than PEEK. PEKK products have a lower melt temperature as well as a lower rate and degree of crystallinity than PEEK, which aids in the remarkable ease of printing.

Benefits of PEKK-A-CF20 

• Substantially easier to 3D print than PEEK
• Wide processing window from 345-375°C
• Tg of 160°C, HDT of 150°C, and a Tm of 305°C
• Inherently flame resistant (UL94 V-0)
• Low smoke generation
• Outstanding mechanical, thermal, and chemical resistances
• CUT of 260C if Annealed to the crystalline state

Typical PEKK-A-CF20 Applications 

• Seals, Gears, Bushings, Bearings, Pump, and Compressor Components
• Industries Served: Auto, Aerospace, Defense, Semi-conductor, Oil & Gas

Filament Specifications:
• 1.75mm +/- 0.05mm in diameter

Recommended Print Settings:
• Extruder Temps:  345 – 375°C
• Bed Temps:  125 – 140°C
• Bed Prep:  Rough Borosilicate Glass with PVP gluestick, or High temp carbon fiber sheet plus PVP glue stick, we also recommend the Vision Miner Nano Polymer
• Nozzle: We strongly recommend a 0.4mm orifice or larger using one of our Carbide nozzles
• Layer Height:  Ideal layer height is 60% of nozzle diameter.  We do not recommend printing layers below 0.25mm with Carbon fiber grades.  Lower than 0.25mm may create too much back pressure in the hot end and result in poor feeding, jams, drive gear clicking, and eating a notch into the filament.
• Flow should be set to 106-110% depending on the feeder for a complete filling of the material.
• Drying Instructions:   Please dry @110-120°C for 12-24 hours, for the first dry its recommended to dry for at least 24 hours before using, the drying time can be lowered using a vacuum oven and also storing the filament in a degassing chamber when not in use.
• Enclosure temp (if your printer is equipped):  70 – 140°C [hotter is better, up to 140°C] See More

PEKK-A-CF20 Filament Specifications Table

FAQ for PEKK-A-CF20 Filament

1. What is PEKK-A-CF20?

PEKK-A-CF20 is a high-performance 3D printing filament made from Poly Ether Ketone Ketone (PEKK) reinforced with 20% carbon fiber. It offers superior strength, stiffness, and thermal stability, making it suitable for industrial and aerospace applications.

2. What are the key benefits of using PEKK-CF20?

1. High mechanical strength and stiffness.
2. Excellent resistance to chemicals and heat.
3. Low moisture absorption and dimensional stability.
4. Low coefficient of thermal expansion (CTE).
5. Resistance to hydrolysis and sterilization.
6. Ideal for demanding environments, including harsh industrial conditions.

3. What are the recommended print settings for PEKK-CF20?

1. Nozzle Temperature: 355–385°C
2. Bed Temperature: 120–140°C
3. Nozzle Size: 0.6mm or larger
4. Bed Preparation: Use rough borosilicate glass or high-temperature carbon fiber sheets with PVP glue or Vision Miner Nano Polymer adhesive.

4. How should PEKK-CF20 be dried before use?

• Dry the filament at 110–120°C for 12–24 hours.
• For first-time drying, ensure at least 24 hours of drying time.
• Use a vacuum oven to reduce drying time.

5. How should PEKK-CF20 filament be stored?

• Store in a degassing chamber when not in use.
• Use a sealed container with desiccant to prevent moisture absorption.

6. What are the mechanical properties of PEKK-CF20?

PEKK-A-CF20 offers exceptional strength and rigidity, even at elevated temperatures. Its carbon fiber reinforcement enhances dimensional stability and reduces thermal expansion.

7. Is PEKK-CF20 suitable for high-temperature applications?

Yes, PEKK-A-CF20 performs exceptionally well at elevated temperatures and maintains mechanical integrity even in challenging environments.

8. Can PEKK-CF20 be used in autoclaves or for sterilization?

Yes, the filament has excellent resistance to hydrolysis and can withstand sterilization processes in boiling water or superheated steam at temperatures over 250°C.

9. What colors are available for PEKK-CF20?

PEKK-A-CF20 is available in Natural and Black.

10. How long is the filament usable after delivery?

PEKK-A-CF20 is workable for up to 12 months from the date of delivery, provided it is stored and maintained appropriately.