Polymaker Fiberon PA612-CF15 Carbon Fiber Nylon Filament 1.75mm, Black, 1kg | 15% CF Reinforced, Less Moisture Sensitive than PA6, Stronger than PA12, Stable Dimensions, Annealed HDT 175°C at 0.45 MPa
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Product Details
- 15% Carbon Fiber Reinforced PA612: Fiberon PA612-CF15 is a long-chain PA612 nylon reinforced with 15 wt% carbon fiber. It combines lower moisture sensitivity than PA6-based nylon with stronger mechanical performance than PA12-based materials, making it suitable for rigid functional parts, tooling, jigs, fixtures, and engineering prototypes.
- Strength Retention After Moisture Exposure: Typical TDS values include 91.9 MPa dry X-Y tensile strength and 83.1 MPa after the specified annealing and moisture-conditioning process. This balance makes the material useful for parts that may experience changing humidity during service.
- Heat Performance After Annealing: The heat deflection temperature reaches 175°C at 0.45 MPa after annealing at 100°C for 16 hours. Annealing also helps improve dimensional stability. HDT is a standardized test value and should not be interpreted as the continuous operating temperature of every printed part.
- Lower Moisture Sensitivity Still Requires Dry Storage: PA612-CF15 is less moisture-sensitive than PA6-based nylon but remains hygroscopic. Keep the filament below 20% relative humidity during storage and printing. Dry at 100°C for 10 hours before use if exposed to ambient humidity or if stringing, bubbles, or rough surfaces appear.
- Advanced Printer and Wear-Resistant Nozzle Required: Use an all-metal hotend, a 250–300°C nozzle, a 40–50°C build plate, and a hardened steel or ruby nozzle with the cooling fan off. A heated chamber is not required under the TDS conditions. Speeds up to 300 mm/s may be possible with a tuned profile. Before long prints, confirm smooth filament routing and unrestricted spool rotation.
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Printing Polymaker Nylon-CF
Polymaker Nylon-CF in Black is Nylon filled with chopped carbon fiber, and this listing is a 1kg spool. The fibers make parts stiffer and more dimensionally stable than plain Nylon, but they are abrasive, so a hardened nozzle is mandatory (see nozzle compatibility below). The ranges below are for Nylon-CF, which usually prints a little hotter than plain Nylon. Nylon-CF is best suited to strong, stiff engineering parts that must also tolerate heat. Brands and even individual spools vary, so treat these as starting points and run a quick temperature tower to lock in the sweet spot for your printer.
Ranges checked against Bambu Lab, Polymaker and Prusament data. Heat resistance is the heat deflection temperature (HDT). Read our carbon fiber filament guide for bed adhesion, drying, troubleshooting, and material-specific tips.
Nozzle Compatibility
Carbon fiber is abrasive and wears brass (and stainless) nozzles out of round, sometimes within a single spool. Use hardened steel or another wear resistant nozzle such as ruby or tungsten carbide. With hardened steel, start about 5 to 10°C hotter than you would with brass.
Based on Bambu Lab and Prusa guidance. More in our carbon fiber filament guide and nozzle types guide.