eSUN PETG-CF Black Carbon Fiber Reinforced PETG Filament 1 kg
eSUN PETG-CF Black is a black engineering PETG filament reinforced with carbon fiber for FDM/FFF 3D printing of rigid, strong and functional parts. The material is also known as ePETG-CF and combines the practical properties of PETG with a matte carbon-fiber texture, increased rigidity, good dimensional stability and a clean technical appearance.
Black is a classic carbon-fiber shade for housings, brackets, holders, 3D printer parts, automotive components, RC models, drones, electronics, industrial fixtures and functional prototypes. The matte surface helps hide layer lines and makes printed parts look more professional compared with standard glossy PETG.
✅ Key advantages
- Carbon fiber reinforcement: more rigid and stable than standard PETG.
- Black technical color: universal shade for housings, brackets, holders and functional parts.
- Matte carbon-fiber texture: printed models look clean, professional and without strong gloss.
- Less visible layer lines: carbon fiber filling visually improves the printed surface.
- Higher rigidity: suitable for parts where standard PETG is too flexible.
- Chemical resistance: keeps the practical chemical resistance of PETG for technical use.
- Dimensional stability: suitable for functional prototypes and working components.
- Wear resistance: useful for parts working in mounts, assemblies and technical builds.
- Good layer adhesion: with correct settings, parts can be strong and reliable.
- 1.75 mm diameter: compatible with most modern FDM/FFF 3D printers.
📐 Technical specifications
| Property | Value |
|---|---|
| Brand | eSUN |
| Material | PETG-CF / ePETG-CF |
| Material type | PETG reinforced with carbon fiber |
| Color | Black |
| Diameter | 1.75 mm |
| Net weight | 1 kg |
| Surface | Matte carbon-fiber texture, black technical effect |
| Print technology | FDM / FFF |
| Recommended nozzle | Wear-resistant nozzle: hardened steel, ruby, tungsten carbide or another wear-resistant nozzle |
| Main applications | Housings, brackets, holders, 3D printer parts, RC models, drones, electronics, automotive elements, functional prototypes |
📊 Physical and mechanical properties
| Property | Value |
|---|---|
| Density | 1.26 g/cm³ |
| Melt flow index | 18.0 at 220 ℃ / 10 kg |
| Tensile strength Z | 28 MPa |
| Elongation at break Z | 3.6% |
| Flexural strength XY | 80.8 MPa |
| Flexural modulus XY | 2500 MPa |
| IZOD impact strength XY | 5.2 kJ/m² |
| Heat deflection temperature | 70 ℃ at 0.45 MPa |
| Material behavior | Rigid, strong, matte, chemically resistant, carbon fiber reinforced |
⚙️ Recommended Printing Parameters
| Parameter | Recommended value |
|---|---|
| Drying before printing | 65 ℃ for more than 8 hours |
| Nozzle temperature | 240–260 ℃ |
| Bed temperature | 75–90 ℃ |
| Print speed | Up to 150 mm/s after profile tuning |
| Recommended starting speed | 40–80 mm/s for functional parts |
| Fan speed | 100% as a base recommendation, tune depending on model |
| Nozzle | 0.4 / 0.6 mm, wear-resistant |
| Dry box printing | Recommended |
| Build surface | PEI, textured PEI sheet or another PETG-compatible surface |
🔧 Printing recommendations
- Dry the filament at 65 ℃ for more than 8 hours before printing.
- During long print jobs, use a dry box or a sealed filament container.
- Use a wear-resistant nozzle: hardened steel, ruby, tungsten carbide or another wear-resistant option.
- Do not use a standard brass nozzle for long printing: carbon fiber accelerates nozzle wear.
- For first tests, start at 40–80 mm/s and increase speed gradually after profile tuning.
- For strong parts, use enough walls and a high infill percentage.
- Reduce outer wall speed if a smoother matte surface is required.
- Tune retraction and travel moves to reduce marks on outer walls.
- Use Z seam alignment and choose the seam position for a cleaner appearance.
- After printing, let the part cool on the bed to reduce the risk of deformation.
🧩 Best applications
- ⚙️ Functional technical parts.
- 🔩 Brackets, mounts, fixtures, holders and installation elements.
- 🧩 Parts for 3D printers, machines and technical devices.
- 🚗 Automotive elements, decorative-technical inserts and prototypes.
- 🚁 Parts for RC models, drones and technical hobby projects.
- 📦 Electronic device housings, covers, panels and protective elements.
- ⚫ Black technical parts with matte carbon-fiber texture.
- 🏭 Industrial jigs, fixtures and templates.
- 🧪 Functional prototypes for checking shape, fit and rigidity.
- 🎨 Design elements, accessories and decorative-functional parts.
✅ 3D printer compatibility
eSUN PETG-CF Black is compatible with FDM/FFF 3D printers using 1.75 mm filament, supporting a 240–260 ℃ nozzle temperature range and a 75–90 ℃ heated bed. The material can be printed on Bambu Lab, Creality, Prusa, Anycubic, Elegoo, Sovol, QIDI, Flashforge and other 3D printers when the profile is properly tuned.
For stable printing, dry material and a wear-resistant nozzle are important. PETG-CF can usually be printed without an enclosure, but for large technical parts and stable geometry it is useful to avoid drafts and sudden temperature changes.
Why a wear-resistant nozzle is needed
PETG-CF contains carbon fiber, so the material is abrasive. During long print jobs, a standard brass nozzle can wear quickly, causing the nozzle diameter to change, surface quality to become worse, extrusion to become unstable and dimensional accuracy to decrease.
For PETG-CF, hardened steel, ruby, tungsten carbide or another wear-resistant nozzle is recommended. A 0.4 mm nozzle is suitable for most tasks, but a 0.6 mm nozzle is often convenient for more stable feeding, stronger parts and long print jobs.
📦 Storage and drying
- Store the spool in a sealed bag or container with desiccant.
- Dry the material at 65 ℃ for more than 8 hours before printing.
- Use a dry box for long print jobs.
- Do not leave the filament open in a humid room.
- If bubbles, popping or rough surface appear, dry the material again.
- After printing, return the spool to dry storage immediately.
📄 File Download: technical files and certificates
- PETG-CF Parameters for Bambu Lab & Creality — starting profiles and printing parameters.
- TDS — technical data sheet.
- MSDS/SDS — material safety data sheet.
- RoHS — restricted substances report.
- REACH — SVHC report.
🛡️ Safety during printing and post-processing
eSUN PETG-CF is not classified as a hazardous chemical under GHS, but standard safety measures should be followed during printing and post-processing. Print in a well-ventilated area and avoid overheating, open flames, sparks and hot surfaces.
When sanding, drilling, cutting or mechanically processing PETG-CF parts, safety glasses and a mask are recommended. Dust from carbon-fiber-filled materials should not be inhaled, so post-processing should be performed carefully, with ventilation and proper cleaning of the work area.
❓ FAQ
Black PETG-CF has a matte carbon-fiber texture, higher rigidity and a more technical appearance. Standard PETG is usually glossier and more flexible. It is possible for short tests, but not recommended for regular printing. Carbon fiber accelerates brass nozzle wear, so hardened steel, ruby or another wear-resistant nozzle is recommended. Yes. Drying at 65 ℃ for more than 8 hours before printing is recommended. Dry material prints more consistently and produces a better surface. PETG-CF is more demanding than standard PLA and PETG because it is abrasive and requires drying. With a wear-resistant nozzle, dry box and properly tuned profile, it can be printed successfully on most modern FDM/FFF printers. PETG-CF can usually be printed without an enclosure, but for large technical parts it is better to avoid drafts and sudden temperature changes. The material is suitable for housings, brackets, holders, 3D printer parts, automotive elements, electronic device parts, RC models, industrial fixtures and functional prototypes.How is Black PETG-CF different from standard PETG?
Can PETG-CF be printed with a standard brass nozzle?
Does eSUN PETG-CF Black need drying?
Is PETG-CF beginner-friendly?
Does it need an enclosure?
What parts is Black PETG-CF best for?
🚀 Why buy
eSUN PETG-CF Black is a strong choice for users who need a rigid, matte and technical material with a universal black carbon-fiber shade. It is suitable for functional parts, housings, brackets, RC models, drones, electronic devices, prototypes, decorative-technical elements and industrial fixtures. The carbon-fiber texture makes models visually clean, while carbon fiber reinforcement helps produce stable and rigid parts for practical applications.