PA6-CF (Polyamide 6 — Carbon Fiber Reinforced) is a high-performance 3D printing material that combines Nylon 6 matrix with chopped carbon fiber reinforcement. It has gained significant traction among engineers and manufacturers who need functional parts with excellent mechanical properties.
What Is PA6-CF?
PA6-CF is a composite filament consisting of Nylon 6 (polyamide 6) loaded with 10-30% carbon fiber by weight. The carbon fiber reinforcement enhances the base nylon’s strength, stiffness, and dimensional stability while reducing thermal expansion. The result is a material that outperforms standard nylon in nearly every mechanical dimension.
Key Properties of PA6-CF
- Tensile Strength: 70-90 MPa (vs. ~45 MPa for standard PA6)
- Flexural Modulus: 7-10 GPa (significantly stiffer than unreinforced nylon)
- Heat Deflection Temperature: 180-200°C at 0.45 MPa
- Moisture Absorption: Lower than standard PA6 due to fiber reinforcement
- Thermal Expansion: Reduced by up to 50% vs. unreinforced nylon
3D Printing Settings for PA6-CF
PA6-CF requires careful printing conditions due to its abrasive nature and moisture sensitivity:
- Nozzle Temperature: 250-280°C (recommend hardened or hardened steel nozzle due to abrasion)
- Build Plate Temperature: 80-100°C (glass plate, PEI, or carbon fiber composite plate)
- Secagem: 80-100°C for 4-6 hours before printing (moisture causes bubbling and poor layer adhesion)
- Printing Speed: 30-60 mm/s (lower speeds improve fiber alignment)
- Layer Height: 0.1-0.2 mm for best surface quality
- Enclosure: Recommended to maintain consistent ambient temperature and reduce warping
Applications of PA6-CF
Due to its excellent strength-to-weight ratio and thermal resistance, PA6-CF is used in:
- Aerospace interior brackets and non-structural components
- Automotive functional parts and testing fixtures
- Robotics components and end-effectors
- Custom jigs and fixtures for manufacturing
- Sporting goods and high-performance consumer products
PA6-CF vs. Other Carbon Fiber Materials
Compared to carbon fiber reinforced PLA (CF-PLA), PA6-CF offers significantly higher heat resistance and toughness. Compared to PETG-CF, it provides better mechanical properties but requires higher printing temperatures. Nylon 12-CF offers lower moisture absorption but at higher material cost.
Supplier Considerations
When sourcing PA6-CF filament, consider the carbon fiber content percentage, spool drying quality, consistent diameter tolerance, and the supplier’s quality certifications. Nylonplastic supplies PA6-CF filament with 15-20% carbon fiber content, vacuum-sealed with desiccant, and backed by ISO 9001 quality management.
Ready to source? Nylonplastic supplies all the materials discussed in this guide — in standard and custom grades, with IATF 16949, ISO 9001, and ISO 14001 certified quality. Request a quote →
