SKU: 79775486776

Polymaker Fiberon PA6-CF20 1.75mm Filament 3kg (Formerly PolyMide PA6-CF)

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Description

Polymaker Fiberon PA6-CF20 1.75mm Filament 3kg (Formerly PolyMide PA6-CF)Fiberon is polymakers family of fibre reinforced composite filaments developed to provide outstanding mechanical performance for a range of engineering applications. Fiberon PA6 CF20 is a carbon fibre reinforced nylon filament featuring 20% chopped carbon fibres by weight. Within Polymakers range of nylon filaments, Fiberon PA6 CF20 delivers best in class stiffness, strength and heat resistance and superior z axis tensile strength to outperform many

Fiberon™ is polymakers family of fibre-reinforced composite filaments developed to provide outstanding mechanical performance for a range of engineering applications.

Fiberon™ PA6-CF20 is a carbon fibre reinforced nylon filament featuring 20% chopped carbon fibres by weight. Within Polymakers range of nylon filaments, Fiberon™ PA6-CF20 delivers best in class stiffness, strength and heat resistance and superior z axis tensile strength to outperform many other functional 3D printing materials in "dry state". Together with 20% industrial chopped carbon fibres, Polymakers Fibre-Adhesion™ technology optimises the surface chemistry of the fibres to achieve better dispersion and bonding to the Nylon 6 matrix and delivers an outstanding filament for functional applications.

 

Find out more about the Polymaker product changes here

Learn more about the Fiberon range here.

Features

  • Excellent Stiffness & Strength - Featuring a tensile modulus up to 8.4 GPA on the XY axis and 3.7 GPA on the Z axis, Fiberon™ PA6-CF20 is well suited for high performance industrial and engineering applications. Fiberon™ PA6-CF20 combines extreme stiffness and best-in-class tensile strength. Fiberon™ PA6-CF20 is an excellent choice for dry applications[1] requiring stiffness and durability such as automotive brackets, jigs, ESD safe fixtures, aerospace, prosthetics and engineering.
  • Excellent Heat Resistance - Featuring a high heat resistance up to 215°C after annealing[2], Fiberon™ PA6-CF20 offers excellent heat resistance for demanding applications where heat and stress are critical design factors. This material lends itself perfectly to functioning automotive applications where a combination of heat resistance and mechanical properties are required. 
  • Outstanding Layer Adhesion - Most fiber reinforced materials show a decrease in z-axis layer adhesion when compared with their non-fiber reinforced Nylons, producing a part that is only stronger on the X-Y axis but detrimental to the Z axis. Polymakers new technology in Fiberon™ PA6-CF20 not only solves this problem but actually increases Z axis tensile strength creating more isotropic parts that are strong in every direction.
  • Warp-Free™ - Fiberon™ PA6-CF20 features Polymakers Warp-Free™ technology to deliver a reliable Nylon filament with excellent dimensional stability and near-zero warpage. This is achieved by the fine control of microstructure and crystallization behaviour of Nylon, which enables the material to fully release the internal stress before solidification. The Warp-Free™ technology in Fiberon™ PA6-CF20 is designed to work best with minimal bed temperatures.
  • Wear Resistant and Tough - Parts printed in Fiberon™ PA6-CF20 display excellent toughness and wear resistant properties.
  • Improved Printability – Unlike many other Nylon filaments, Fiberon™ PA6-CF20 is extremely easy to work with, exhibiting excellent dimensional stability. It is compatible with most filament-based 3D printers with no heated bed or chamber required!
  • Uncompromised Quality - Polymakers leading quality control process and rigorous in-house testing ensure reliable printing and consistency across spools and batches.

[1] Most Nylon parts in the real world undergo a process called "Moisture conditioning" which improves toughness and flexibility of the Nylon while reducing tensile strength and stiffness. Unless protected with a moisture barrier, PA6-CF shows a greater change in mechanical properties when subjected to water / high humidity in comparison to long-chain nylon filaments like PA12-CF or PA612-CF. In simple terms PA6-CF will typically offer the best properties in a dry application, but for a wet or high humidity application a longer chain nylon such as PA612 or PA12 may be better. See "Specifications & FAQ" tab to learn more about what moisture conditioning is, how it works and if it's relevant to your application.
[2] Fiberon™ PA6-CF20 displays the best mechanical and thermal properties when fully crystallized. The printed part will not reach full crystallization during the printing process, an additional step is required: Annealing. Fiberon™ PA6-CF20 can be annealed in the oven at 100˚C for 16 hours right after the printing process.

Technical Data

All PA6-CF20 specimens were printed with 300°C nozzle temperature, 50°C bed temperature, cooling fan OFF. Samples were printed with 100% infil, 2 shells and 3 top & bottom layers.

All samples were annealed after printing at 100°C for 16h.

Physical Properties

  • Density: 1.17 g/cm3 
  • Melt Index: 20.5 g/10min (300°C, 2.16 kg)
  • Moisture Sensitivity: 
    • Moisture Conditioning (70% RH, 23°C)
      Equilibrium at 3.3% after 40 days.
      Moisture absorption curve.
    • Wet State (Water Submersion, 60°C)
      Average moisture content is 5.3% after 48 hours.

Thermal Properties

  • Glass Transition: 
    • Value: 74.2°C
    • Testing Method: DSC, 10°C/min
  • Heat Deflection Temperature: 
    • Value:     
      • 0.45MPa - 215°C
      • 1.8 MPa - 173°C
      • HDT Curve
    • Testing Method: ISO 75
  • Vicat Softening Temperature: 
    • Value: 219.2°C
    • Testing Method: ISO 306, GB/T 1633

Nylon is a semi-crystalline material, it's crystalline regions offer many properties, but in particular their structure deliver the heat resistance that nylon is known for. Annealing after printing is a critical process to achieve consistent crystallinity and complete the production process of nylon parts.

Mechanicla Properties

Dry state represents when PA6-CF20 part is printed and annealed.
Wet state represents if the PA6-CF20 part were submerged in water for 48 hours.

If your part is exposed to reasonable humidity (70% RH) but isn't exposed to water, your part would become moisture conditioned. To enter the wet state would require very high humidity, steam or submersion.

Nylon 6 based materials are moisture sensitive and their mechanical properties change. As they absorb moisture the toughness and flexibility increase, while tensile strength and stiffness decrease. This process is not permanent, if the part were dried, it would regain strength and stiffness.

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Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 79775486776

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4.8 ★★★★★
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H Connelly
Los Angeles, US
★★★★★ 3
Hard As Rock When Cold
Color: White, Size: Standard (Pack of 2)
These are good pillows except they get hard as a rock when the temps go below 65F and take 10-20 minutes to warm up at bedtime. Not ideal where the winters are colder or for someone with cervical spine issues.
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Reviewed in the United States on March 26, 2026
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Shea
Lexington, US
★★★★★ 5
LUXURIOUS, just like it says
Color: White, Size: Queen (Pack of 2)
I used My Pillows for years which needed constant fluffing throughout the night until they just became useless. Since they became useless, I would always wake in the middle of the night with terrible headaches and my head would be sore all over, throbbing like a boil. I couldn’t stand anything to touch my any part of my head while these headaches occurred. One night almost a week ago I was awake in pain and couldn’t sleep. I started googling for a solution, a pillow that would support a human head, basically a bowling ball. After several products which kept sending me to Amazon, I stumbled upon this pillow. I read all of the reviews. Many compared it to a “luxurious hotel pillow”. So I waited and got them within less than 48 hours. It was a thin box so I wasn’t expecting much. They were vacuum sealed, I opened them and allowed about an hour for them to fully expand. They were comprised of memory foam and down alternative like “luxurious hotel pillows”. They were heavy too. I tried to fluff it for maximum feel. It was extremely firm and I wasn’t able to actually fluff or reform it in any manner really. I could feel the down alternative filling surrounding this semi hard center ( the memory foam I guess) and I fluffed as much as possible. I had difficulty getting it into my pillow case, which was fine to me. It just made me anticipate this perfect looking pillow. I had been suffering with these headaches due to inferior pillows, I couldn’t wait. I laid down and put my bowling ball head on it! It completely supported my head. I normally like my pillow to conform around my neck and shoulders to allow a straight alignment with my head. My head was slightly up, but hey this felt great!!! I could feel the down alternative filler cushioning my head with the firm memory foam in the middle. I could not wait to try it that night. Night comes and I’m excited to see if I can sleep through the night finally without waking with those terrible headaches. I slept almost all through the night except for going to the bathroom once!! And my head wasn’t hurting nor did it feel like a boil!! I was ecstatic to say the least. I know there are people just like me searching for relief. If you can tolerate a firm pillow you can’t go wrong with these pillows. You get two for a great price! I just wish I hadn’t wasted hundreds on My Pillows for all my bedrooms a few months ago. I will be replacing all the pillows in my home with these WONDERFUL pillows!!!
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Reviewed in the United States on March 13, 2025
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Jennifer
Carnegie, US
★★★★★ 5
Awesome Pillow!!!
Size: Queen, Number of Items: 1
This pillow is Amazing!!! So Great to sleep on. I finally can get a good night's sleep!!! Its very soft and comfortable. I also haven’t gotten up with a stiff neck in the morning either!!!
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Reviewed in the United States on May 16, 2026
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Adam Rigdon
New York, US
★★★★★ 5
Love them!!
Size: Queen, Number of Items: 2, Size: Queen, Number of Items: 2
Ok I normally don't leave reviews but I had to on this pillow. I was looking forever for a pillow and was nervous about buying one because you know how that usually goes when it comes to buying pillows. They arrived compressed but when you unwrap them they blow up to be a heavy duty pillow. Firm but not too firm. I don't like super soft pillows that you can roll up in a ball with one hand, I like a pillow that gives support and these do just that. They are cooling as well they are pretty for a pillow with the unique design. If you are in the market for a pillow and reading this THEN BUY THIS PILLOW & come back to tell me thank you. I promise you will NOT be disappointed. No I didn't get paid to say any of this. I wanted to give a honest review where it deserves one! You will not be disappointed! Thanks for the fast over night shipping as well. Not to mention the pricing is on point. I can say right now you will not find 2 pillows of this quality & price.
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Reviewed in the United States on April 1, 2026
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KEM
Lowell, US
★★★★★ 5
Perfect pillows
Size: Queen, Number of Items: 2
Soft, but durable. Comfortable and cool during sleep.
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Reviewed in the United States on May 17, 2026

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