Descrizione
Plastic Is Not Enough. Not anymore. When the part you are printing needs to survive engine bay temperatures, resist impact at 40 below, and hold a thread under torque — PLA and PETG are not candidates. They are placeholders. The material that bridges consumer 3D printing and actual engineering is polyamide 6 (PA6, Nylon 6) reinforced with carbon fiber.
SUNLU's PA6-CF filament embeds 15% chopped carbon fiber into a nylon 6 matrix — not as a cosmetic additive, but as a structural phase change. The carbon fibers increase tensile strength by 40% over unfilled nylon, reduce thermal expansion to a quarter of pure PA6, and raise the heat deflection temperature to 180°C — high enough to survive inside a car engine bay, a motorcycle intake manifold, or the hot end of a drone frame under sustained load.
This is not a "cool material to try." It is an engineering filament that demands a hardened steel nozzle (0.4mm minimum), an enclosure at 45°C+, a bed temperature of 100°C, and a print surface that bonds to nylon — PVA glue stick or Garolite. It ships vacuum-sealed with desiccant because nylon absorbs moisture from the air at a rate that would ruin spool integrity within 48 hours if left exposed. The spool is not optional. It is part of the material handling system.
When the part must survive what the machine cannot, the filament is not a supply. It is a specification.
Key Features
- ✦ 15% Chopped Carbon Fiber Reinforcement — 40% higher tensile strength vs. unfilled PA6 nylon
- ✦ Heat Deflection Temperature: 180°C — Survives engine bay, exhaust-adjacent, and high-temp industrial environments
- ✦ Low Thermal Expansion — 75% less expansion than pure nylon; critical for dimensionally accurate functional parts
- ✦ Vacuum-Sealed with Desiccant — Nylon absorbs 2-3% moisture by weight within 48 hours of exposure; sealed packaging preserves print quality
- ✦ 1.75mm and 2.85mm Diameters — Compatible with both 1.75mm (Prusa, Bambu, Creality) and 2.85mm (Ultimaker, LulzBot) ecosystems
- ✦ Matte Carbon Finish — Printed parts exhibit an industrial matte black surface that hides layer lines
- ✦ 1KG Net Weight Spool — Cardboard spool with diameter markings; compatible with standard spool holders
Technical Specifications
- Material: PA6 (Nylon 6) + 15% Chopped Carbon Fiber
- Diameter: 1.75mm or 2.85mm (±0.05mm tolerance)
- Net Weight: 1 KG per spool
- Tensile Strength: ~85 MPa (vs. ~60 MPa for unfilled PA6)
- Flexural Modulus: ~4,800 MPa
- Heat Deflection Temperature: 180°C (HDT @ 0.45 MPa)
- Nozzle Temperature: 260°C - 290°C
- Bed Temperature: 90°C - 110°C
- Required Nozzle: Hardened steel (≥0.4mm); brass nozzles will wear within 500g
- Drying Requirement: 70°C for 6-8 hours before printing if exposed to air
Who It Serves
The mechanical engineer prototyping functional brackets that will hold 15 pounds of load at 90°C ambient. The drone builder printing frame components where a PLA part would soften mid-flight under motor heat. The automotive enthusiast fabricating custom intake components, sensor mounts, and under-hood brackets for project cars. The industrial designer creating end-use parts — jigs, fixtures, robotic end-effector components — where the printed part is the final part, not a prototype. The competitive RC racer whose car needs suspension arms that survive track impacts without shattering. PA6-CF is not the filament you buy to print figurines. It is the filament you buy when the part has to work.
Frequently Asked Questions
Q: Can I print PA6-CF with a brass nozzle?
A: No. Chopped carbon fiber is abrasive. A brass nozzle will enlarge from 0.4mm to 0.6mm+ within 500 grams of printing, destroying dimensional accuracy. You MUST use a hardened steel, ruby-tipped, or tungsten carbide nozzle. The cost of replacing a brass nozzle after every spool exceeds the cost of a hardened steel nozzle that lasts indefinitely.
Q: How do I store PA6-CF to prevent moisture absorption?
A: Keep the spool in its vacuum-sealed bag with desiccant until ready to use. During printing, use a filament dryer at 70°C. Between prints, store in an airtight container with fresh desiccant. Nylon absorbs 2-3% moisture within 48 hours of ambient exposure — wet nylon prints with steam pops, poor layer adhesion, and a rough surface texture.
Q: Does this require an enclosure?
A: Strongly recommended. Nylon warps aggressively without a stable thermal environment. An enclosure at 45°C+ and a bed at 100°C with PVA glue or Garolite surface dramatically improves first-layer adhesion. Printing PA6-CF on an open-frame printer without an enclosure is possible but will limit part size and increase the failure rate.
Q: How does PA6-CF compare to PA12-CF?
A: PA6 (Nylon 6) offers higher strength and temperature resistance but absorbs more moisture. PA12 (Nylon 12) absorbs less moisture and has slightly better chemical resistance but lower strength and HDT. For structural parts under load at temperature, PA6-CF is superior. For dimensionally stable parts in humid environments, PA12-CF is preferred.
Q: Can I paint or post-process PA6-CF prints?
A: Yes. The matte carbon surface accepts epoxy-based primers directly. For a smooth finish, sand with 400-grit wet sandpaper then apply filler primer. For maximum surface quality, use a resin coating (XTC-3D or similar) which fills the slight texture from the carbon fiber content. The material machines well — you can drill, tap, and ream printed PA6-CF parts with standard metalworking tools.
Customer Reviews
지불 및 보안
Le tue informazioni di pagamento vengono elaborate in modo sicuro. Non memorizziamo i dettagli della carta di credito né abbiamo accesso alle informazioni della tua carta di credito.