PAHT-CF Nylon Carbon Fiber Hydrophobic Filament — High Strength Moisture-Resistant Nylon, Made in USA
All the moisture and heat resistance of PAHT, with the added strength of carbon fiber. Filamatrix's Nylon CF Hydrophobic (PAHT-CF — Carbon Fiber Reinforced Polyamide High Temperature) builds on our
Nylon Hydrophobic (PAHT) with carbon fiber reinforcement for superior stiffness, strength, and dimensional stability. Like PAHT, it absorbs moisture at
less than one-fourth the rate of standard PA6, with minimal warping and a
service temperature of 160°C — now with the structural performance carbon fiber delivers for demanding load-bearing applications.
Why Choose PAHT-CF Over Standard Nylon?
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Carbon Fiber Reinforced — Significantly higher stiffness and strength than unfilled nylon or PAHT, with improved dimensional stability under load
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4x Lower Moisture Absorption — Dramatically fewer print failures from ambient humidity
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Minimal Warping — Easier bed adhesion and better dimensional accuracy than PA6
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High Temperature Resistance — 160°C service temperature with an HDT of 90°C at 1.82 MPa (264 psi), maintaining performance under higher loads where most nylons fall short
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High-Heat Rated Spool — Built to withstand drying temperatures, unlike standard spools that can warp in a filament dryer or oven
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Tight Diameter and Ovality — 3-axis laser measurement for consistent extrusion, fewer jams and clogs
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Made in USA — Designed by engineers with 50+ years of plastic extrusion experience
Applications That Benefit from PAHT-CF:
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Structural & Load-Bearing Parts — Brackets, mounts, and frames that require stiffness and strength in humid or high-temp environments
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Automotive & Under-Hood Components — Rigid housings, clips, and brackets exposed to heat and moisture
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Industrial Fixtures & Tooling — High-stiffness jigs and fixtures for demanding shop environments
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Drone Frames & RC Components — Lightweight structural parts that need to hold their shape under stress
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Enclosures & Electronics Housings — Rigid protection in variable temperature and moisture conditions
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Functional Prototypes — Structural validation parts with realistic stiffness and mechanical properties
Need higher impact strength instead of stiffness? Our unfilled
Nylon Hydrophobic (PAHT) may be a better fit for your application.
Technical Specifications:
- Material: PAHT-CF (Carbon Fiber Reinforced Polyamide High Temperature / Nylon CF Hydrophobic)
- Diameter: 1.75mm and 2.85mm
- Recommended Nozzle Temperature: 265–290°C
- Recommended Bed Temperature: 50°C
- Recommended Drying Temperature: 90°C (6–12 hours)
- Service Temperature: 160°C
- Heat Deflection Temperature (HDT): 90°C @ 1.82 MPa (264 psi) — most materials are rated at the lower 0.45 MPa standard
- Requires hardened steel nozzle (0.4mm or larger recommended)
- Made in USA
Spool Specifications:
- Flange Diameter: 203mm
- Traverse Width: 55mm (500g) / 78mm (1kg)
- High-heat rated spool — designed to withstand drying temperatures, unlike standard spools that can warp in a filament dryer or oven
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Note: Due to spool dimensions, this product may not be compatible with the Bambu AMS, Prusa MMU, or other automated material handling systems. Please verify your system's spool size requirements before purchasing.
Tips for Optimal Printing:
- A hardened steel nozzle (0.4mm or larger) is required — carbon fiber is abrasive and will accelerate wear on brass nozzles.
- A variety of build surfaces (glass, Garolite, PEI, etc.) may be used.
- Nylon is moisture sensitive; measures should be taken to keep the filament dry.
- Generally, slower speeds, larger nozzles, and thicker layers are recommended as a starting point, but feel free to experiment with other settings.
A Few Words About Drying:
- All 3D printer filaments are at least somewhat prone to absorbing water (hygroscopic)
- Nylon CF Hydrophobic (PAHT-CF) absorbs moisture much slower than standard nylon — but it's not immune
- The effects of moisture may take days or weeks to become noticeable after exposure to room conditions
- Indications of moisture problems include popping or spitting when printing and stringy prints
- Drying may be done in a dedicated filament dryer, oven, or food dehydrator
- For Nylon CF Hydrophobic, dry six to twelve hours at 90°C (194°F)
Data Sheets:
Whether you're searching for
PAHT-CF filament,
carbon fiber nylon filament,
high strength nylon filament,
stiff nylon filament,
heat resistant filament,
high temperature carbon fiber filament, or a
structural 3D printing filament — Filamatrix's Nylon CF Hydrophobic delivers carbon fiber reinforced performance with a 160°C service temperature and 4x lower moisture absorption than standard PA6, proudly made in the USA.
