SKU: 79775486776

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

Sale price$101.22 Regular price$112.47
Save 10%

Pay in installments of $28.12 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 17 - Jul 22

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

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.

Browse More

 

 

 

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
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

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.8 ★★★★★
Based on 16 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
A
Verified Purchase
Amazon Customer
Cuba, US
★★★★★ 5
Comfortable
Size: Medium, Color: Blue
So comfortable! They stay up perfectly love love love
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 7, 2025
G
Verified Purchase
Glass
Waukegan, US
★★★★★ 5
I stay on your foot they don’t slip in your shoe
Number of Items: 3, Color: White/Neutral (3-pairs), Size: Medium
This is the only socks I wear Under Armour because they stay in place I wear a size 8, but they’re more comfortable with a large instead of a medium, but I wear both because I have them already and you can pull them to stretch them out a little bit
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 12, 2026
L
Verified Purchase
Lauren
Grantham, US
★★★★★ 5
Great fit, truly doesn’t slide off heel
Number of Items: 3, Color: White/Neutral (3-pairs), Size: Medium, Number of Items: 3, Color: White/Neutral (3-pairs), Size: Medium
I’ve scoured all the lands looking for a no-show sock that was 1) thin, 2) quality, soft, breathable material, 3) didn’t dig into my feet/heels, 4) doesn’t shrink, and most importantly 5) stays on the back of my heel without a bulky non-slip rubber piece and these check all the boxes! Perfect for low profile women’s work shoes like Keds, etc. Not low enough for most flats though. I wear a women’s size 9.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 19, 2025
E
Verified Purchase
Elliz
Carnegie, US
★★★★★ 5
So good - I’m buying MORE.
Number of Items: 3, Color: White (3-pairs), Size: Medium
I’m gonna give you more detail than you need about why I’m buying these socks again. I’ve been the mom of girl athletes. I’ve been a model and a fashion director. I’ve worn every brand of shoe on the planet and never found a shoe that did NOT find a vulnerable spot on my foot to rub raw. Even my beloved white Jack Purcell sneakers. With that said - I don’t like socks. I’ve bought a TON of them in 35+ years.....all major brands. They shift. They lose their shape. They get holes in them and wear out too fast. Not these. I retired this year, and knowing I’d be in sneakers a lot, traveling, sightseeing ...... I bought these 6 months ago and have worn them constantly. I’ve traveled with them. I’ve washed them in hot water and bleach. The socks are like brand new. They are exactly the right cut so as not to be seen in a basic sneaker. The little silicone patch on the heel stays put. Not once have I had to dig down into my shoe and pull the sock back up. The socks have stayed soft and EXACTLY the same as the day they were new. Like I said - I am back to buy them again. Great quality!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 20, 2021
J
Verified Purchase
Judy Fletcher
Waukegan, US
★★★★★ 5
No slip low socks
Number of Items: 3, Color: Black/White (3-pairs), Size: Medium
Perfect! ❤️ these!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 16, 2026

recommand products