Carbon fibre filament in nine base polymers, from easy printing PLA-CF and PETG-CF to high heat PA6-CF, PET-CF, PPA-CF and PPS-CF. Choose the base that suits your part, then check your printer: every grade here calls for a hardened nozzle.
1.75 mm ASA-CF Filament - 1 KG
4 colours available
Every carbon fibre filament in our range starts with a familiar plastic and adds short chopped fibres. The fibres make parts noticeably stiffer, reduce warping and shrinkage, and leave a matte surface that hides layer lines. What they do not change is the personality of the base polymer: PLA-CF still softens early, ASA-CF is still the outdoor option and the nylon grades still demand careful drying. So the useful question is not which CF grade is strongest, but which base polymer suits the part and whether that part needs to be stiffer.
Reinforcement has costs as well. Carbon fibre is abrasive and wears brass nozzles, a filled grade can be less tough on impact than its unfilled version, and the high heat grades need more printer than many hobby machines offer. The table runs from easiest to most demanding, so you can stop at the first grade that does the job. If you just want stiff, good looking PLA-CF or PETG-CF parts, our knowledge base article Carbon Fibre for the Rest of Us is a good primer.
| Filament | Nozzle (recommended) | HDT | Printer needs |
|---|---|---|---|
| PLA-CF | 200-230°C (210°C) | 60°C | Hardened nozzle, 30-60°C bed |
| PETG-CF | 230-250°C (240°C) | 70°C | Hardened nozzle, 50-80°C bed |
| ASA-CF | 250-280°C (270°C) | 88°C | Enclosure, 100-120°C bed |
| PA12-CF | 260-280°C (270°C) | 90°C | Enclosure, 12 hour drying |
| PC-CF | 260-300°C (280°C) | 125°C | Enclosure, 100-120°C bed |
| PA6-CF | 270-290°C (280°C) | 200°C | Enclosure, 12 hour drying |
| PET-CF | 260-290°C (280°C) | 205°C | 100°C drying, 70-100°C bed |
| PPA-CF | 255-275°C (270°C) | 220°C | 120°C drying, 80-100°C bed |
| PPS-CF | 300-350°C (320°C) | 245°C | High temperature enclosed printer |
Heat deflection temperature (HDT) is the point at which a test bar deforms under a set load, so treat it as a ceiling rather than a working temperature. Where the data sheet states the method, as it does for PET-CF, the load is 0.455 MPa to ISO 75. Most grades have a downloadable technical data sheet on the product page with the full mechanical figures.
Fit a hardened steel nozzle before the first roll goes on. Our product pages call it recommended for PLA-CF and required for PA6-CF, and the fibres are abrasive in every grade. Treat 0.4mm as the smallest nozzle to use. A 0.6mm nozzle is the more forgiving choice because fibres pass through with more room and partial clogs are less likely, and our ASA-CF page names 0.6mm as ideal. For help picking one, read Hardened Nozzles: Ruby, Tungsten, and Steel Compared.
The nylon based grades absorb moisture quickly, so dry them just before printing and feed from a dry box on long jobs. Confirm your dryer's maximum temperature before ordering PET-CF or PPA-CF.
PLA-CF and PETG-CF do not need an enclosure. ASA-CF, PC-CF and both nylon grades should be printed enclosed to control warping, with the room well ventilated, since ASA, PC and nylon all release fumes at printing temperature. PPS-CF needs a printer that can safely hold its nozzle, bed and chamber temperatures. PA6-CF, PA12-CF, PET-CF and PPA-CF also recommend annealing for 3 hours at 80-100°C after printing.
Check the product page before loading an automatic material system. PETG-CF can run through a Bambu Lab AMS with extra care and setup, ASA-CF suits a standard AMS (not AMS Lite) with a hardened nozzle, and PLA-CF may be used where the system is approved for abrasive materials. Manual feeding from an external spool holder or dry box is recommended for PA6-CF and PA12-CF, and PPS-CF is not recommended for AMS or AMS Lite.
All nine grades come as 1kg rolls of 1.75mm filament, dispatched from our Perth and Melbourne warehouses. Volume pricing counts any mix of 1kg rolls, so a PETG-CF roll for everyday parts and a PA6-CF roll for a hot one add up together: 3 or more rolls take 5% off, 6 or more 10%, 12 or more 15%, and a full carton of 12 in one colour and material 20%. Orders over $299 after discounts ship free Australia-wide, excluding PO Boxes.
Stiffer, yes. Stronger, not always. Chopped fibre raises rigidity and dimensional stability, but it can cost some toughness, so a CF part may crack under a sharp knock where the unfilled version would bend. Our own figures show both sides: PA6-CF lists 60-65 MPa tensile strength against 55-58 MPa for plain PA6, while PC-CF lists 38 MPa against 40-45 MPa for plain PC. Choose CF when flex, creep or warping is the real problem.
Yes. The PLA base prints easily, but the carbon fibre in it is still abrasive, and our product page recommends a hardened steel nozzle because fibre causes extra wear on brass. A worn nozzle loses its shape and extrusion becomes inconsistent, often before you notice any damage. Use 0.4mm or larger, with 0.6mm the more forgiving size for fibre filled filament.
ASA-CF is the grade built for it. ASA is UV resistant, and the fibre adds stiffness and cuts warping, so brackets, housings and automotive parts keep their shape and resist fading outdoors. It lists an HDT of 88°C and needs an enclosure and a 100-120°C bed. The high heat grades go further on temperature, but UV resistance is only listed for ASA-CF, so test them before long sun exposure.
Both are 85% nylon and 15% carbon fibre, both dry at 80°C for at least 12 hours, and both recommend an enclosed printer. PA6-CF prints hotter (270-290°C) and lists a 200°C HDT with 60-65 MPa tensile strength. PA12-CF prints at 260-280°C with a 90°C HDT, and is described as absorbing less moisture than standard nylon, with better dimensional stability. Our PA-CF setup guide covers both.
An enclosed printer with a hardened nozzle, a hotend that holds 280°C (PC-CF can run up to 300°C) and a bed that reaches 90°C for the nylon grades or 110°C for PC-CF. You also need a dryer that holds 80°C for 12 hours, because nylon and PC both absorb moisture. If your machine is open framed, PETG-CF is the most demanding CF grade we would suggest.
Seal each opened roll in an airtight bag or container with desiccant, and keep it somewhere cool, dark and dry. For long term storage our data sheets recommend drying the roll first, then sealing it in a vacuum bag with desiccant. The fibres do not stop the base polymer absorbing moisture, so a nylon CF roll left out in humid weather still needs a full drying cycle before it prints well.
