> For the complete documentation index, see [llms.txt](https://wiki.polymaker.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://wiki.polymaker.com/polymaker-products/polymaker-filaments/fiberon-tm/fiberon-tm-pa612-cf15.md).
# Fiberon™ PA612-CF15
**Superior Engineering Performance**\
Fiberon™ PA612-CF15 is a carbon fiber reinforced long-chain copolyamide (PA612) filament designed for high-performance engineering applications. Its unique chemical structure results in significantly lower moisture sensitivity than traditional PA6/66 and PA6-based nylons, while offering better mechanical properties than PA12-based materials.
Shop Now
**Key Features and Advantages**
* **Low Moisture Sensitivity:** Maintains dimensional accuracy and mechanical strength, even in humid environments, reducing the need for frequent drying.
* **Enhanced Mechanical Properties:** Outperforms PA12-based filaments in tensile strength, stiffness, and durability, making it ideal for demanding functional parts.
* **Carbon Fiber Reinforcement:** 15% carbon fiber content delivers excellent rigidity, high strength, and improved thermal stability.
* **Warpfree™ Technology:** Proprietary formulation minimizes warping and enhances print size stability, even on large or complex parts.
* **Consistent Quality:** Fiberon™ PA612-CF15 is the same trusted formula as PolyMide™ PA612-CF, though it may print in a slightly darker black shade.
**Ideal for Industrial and Engineering Applications**\
Perfect for automotive, aerospace, robotics, jigs, fixtures, and end-use components where dimensional stability, moisture resistance, and mechanical performance are critical.
Choose Fiberon™ PA612-CF15 for your most demanding projects when you need a carbon fiber nylon that combines low moisture sensitivity, superior mechanical properties, and exceptional print reliability.
## Printing Recommendations
| Nozzle temperature | 250 - 300°C |
| ------------------------- | ---------------- |
| Build plate temperature | 40 - 50°C |
| Environmental temperature | Room Temperature |
| Fan speed | 0% |
| Printing speed | 30 - 300 mm/s |
## Printing Tips
This material has a requirement that you print with an all metal hotend that can reach 250˚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 spools in 1KG?
We now make Fiberon™ PA612-CF15 in 1KG spools!
What is the suggested support material?
We suggest PolyDissolve™ S1 or PolySupport™ for PA12 if using a multi nozzle printer.
## **Printing Requirements**
* All-metal hotend 250˚C+ recommended
* 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-pa612-cf15.md)
## Documents
[TDS](/polymaker-products/more-about-our-products/documents/technical-data-sheets/nylon/fiberon-tm-pa612-cf15.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)
---
# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.
## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.
Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:
```
GET https://wiki.polymaker.com/polymaker-products/polymaker-filaments/fiberon-tm/fiberon-tm-pa612-cf15.md?ask=&goal=
```
`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.
Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.