# Fiberon™ PA6-CF20
**Engineered for Demanding Applications**\
Fiberon™ PA6-CF20 is a carbon fiber reinforced PA6 (Nylon 6) filament containing 20% carbon fiber, designed for exceptional mechanical strength, stiffness, and heat resistance. The carbon fiber reinforcement dramatically improves rigidity and dimensional stability, making it ideal for functional prototypes, industrial tooling, automotive, and composite manufacturing applications.
**Outstanding Performance Features**
* **Exceptional Strength & Stiffness:** Tensile strength up to 109 MPa and Youngs modulus over 8.6 GPa (XY), providing robust, rigid parts.
* **High Heat Resistance:** Withstands temperatures up to 215°C, suitable for parts exposed to high thermal loads.
* **Superior Layer Adhesion:** Fiber Adhesion™ technology ensures strong interlayer bonding and cohesive, durable prints.
* **Dimensional Stability:** Minimal warping and excellent size stability, even on large or complex prints.
* **Chemical Resistance:** Suitable for use in chemically aggressive environments.
**Easy to Print for Advanced Users**\
While engineered for high performance, Fiberon™ PA6-CF20 is optimized for reliable printing on advanced FDM/FFF 3D printers equipped with an all-metal hotend and a hardened nozzle due to the abrasive carbon fiber content. Filament drying and post-print annealing are recommended for best results.
**Same Trusted Formula, New Name**\
Fiberon™ PA6-CF20 is the same proven formula as PolyMide™ PA6-CF, though it may print in a slightly darker black shade than its predecessor.
Choose Fiberon™ PA6-CF20 for parts that demand maximum strength, heat resistance, and durability in industrial and engineering environments.
## Printing Recommendations
| Nozzle temperature | 280 - 300°C |
| ------------------------- | ---------------- |
| Build plate temperature | 40 - 50°C |
| Environmental temperature | Room Temperature |
| Fan speed | 0% |
| Printing speed | 30 - 300 mm/s |
## Printing Tips
his material has a requirement that you print with an all metal hotend that can reach 280˚C or higher as well as the need for a hardened nozzle.
* Do not set your build plate above 50˚C and keep any chamber doors open. If you let the build plate or ambient air get above 50˚C, you run the risk of warping or ugly prints.
* Use a glue stick or Magigoo PA if experiencing any issues with bed adhesion.
* PA-CF is very hygroscopic and therefore should only be printed while kept in a heated filament dryer the entire time you print.
* If you hear "popping" or "cracking" noises, then the filament needs to be dried.
* This needs to be annealed after printing at 100˚C for 16 hours.
* After annealing - the part will be dried out and therefore need to be moisture conditioned.
* Moisture conditioning will happen even if you do nothing as the material absorbs moisture from the air. To speed up moisture conditioning, keep in a humid environment for 48 hours.
## FAQ
What is annealing?
You can find out more about annealing [HERE](#what-is-annealing).
What is moisture conditioning?
Moisture conditioning refers to allowing the print to absorb moisture. This is inevitble since nylons are hygroscopic, but you can expedite the process by keeping the print in a high humidity climate, or submerging them in water, for 48 hours. All of our test specimens were annealed at 100˚C for 16 hours, and then immerged in water at 60˚C for 48 hours. The average moisture content of specimens is 2.57%.
Read more about moisture conditioning [HERE](/printing-tips/post-processing/moisture-conditioning.md).
Should I anneal before or after moisture conditioning?
IWhen you anneal in a convection oven, you will dry the part out. So if you moisture condition before annealing - you will need to moisture condition again after. So we would suggest to moisture condition after annealing.
Why do you use such a low build plate temperature with your nylons?
Our nylons come with our Warp-Free™ Technology. In order for this Warp-Free™ technology to work as it should - we want to make sure the build plate and the ambient air temperatures are both below 50˚C. We then anneal the print after to get it's full strength.
Learn more [HERE](/polymaker-products/about-polymaker/polymakers-technologies.md)
Will the spools work in an AMS?
Yes! We have redesigned the edges of our spools so all Polymaker products will now spin great in the AMS.
That said - you will need to be careful when using any abrasive materials in the AMS.
Do I need a filament dryer?
Yes, you will need a filament dryer when printing with nylons due to them being hygroscopic.
Can you make Fiberon spools in 1KG?
Unfortunately we are not offering 1KG Fiberon™ options and this has to do with the increased chance of carbon fiber and glass fiber filament snapping on the spool.
Since carbon fiber and glass fiber filament is more brittle, we spool these with a larger core. This larger core means that 1KG of filament will not fit on a 1KG spool. 3KG options of all Fiberon™ spools are available though.
## **Printing Requirements**
* All-metal hotend 280˚C+
* Hardened nozzle
* Filament dryer
* Annealing post printing
* Moisture conditioning after Annealing
## [Printing Profiles](/polymaker-products/printer-profiles/legacy-profiles-by-material/nylon-pa/fiberon-tm-pa6-cf20.md)
## Documents
[TDS](/polymaker-products/more-about-our-products/documents/technical-data-sheets/nylon/fiberon-tm-pa6-cf20.md)
[SDS](/polymaker-products/more-about-our-products/documents/safety-data-sheets.md)
[Other Docs](/polymaker-products/more-about-our-products/documents/certifications-and-declarations.md)
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