Long-chain carbon-fibre nylon reaching 194 °C HDT at 0.45 MPa and 170 °C at 1.8 MPa, with saturated moisture uptake of 0.88 % — a third of the same maker's PA6-CF.
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Under-bonnet and near-motor parts needing 170 °C-plus heat deflection with less humidity drift than PA6
Long-chain carbon-fibre nylon reaching 194 °C HDT at 0.45 MPa and 170 °C at 1.8 MPa, with saturated moisture uptake of 0.88 % — a third of the same maker's PA6-CF.
PAHT-CF and related long-chain carbon-filled nylons are selected for rigid machine parts that encounter both warmth and changing humidity. Compared with PA6 composites, the long-chain matrix reduces moisture-driven changes while the fibres maintain bending stiffness. Polymaker and Amesos used PA612-CF for agricultural-drone water-pump mounting plates, where the mounting had to accommodate the pumps and withstand their mechanical loading.
The category name covers different formulations rather than a single resin specification. Bambu PAHT-CF and Polymaker PA612-CF15 have different thermal and conditioned-property results, which changes how each should be sized for a warm, loaded component. Lower moisture sensitivity does not mean none, and the loaded heat-deflection figures should not be read as a continuous service temperature. Layer orientation still governs weak attachment features.
FDM · Polymaker PolyMide PA612-CF, a PA612 carbon-fibre filament · Documented case
Amesos designed and tested mounting plates for agricultural-drone pumps; Polymaker selected PolyMide PA612-CF for the required rigidity and mechanical and thermal performance. The case concerns this long-chain nylon composite, not all products sold as PAHT-CF.
A modified drone with printed PAHT-CF frame and motor housings. The yellow toroidal propellers are HIPS, according to the uploader, and are separate from the nylon example.
Listing note: “I printed the frame and housings in PAHT-CF”
Printables listing uploaded by blake3dcake · CC BY-SA 4.0Original listing · Checked 2026-10-17. This is an uploader report, not an independent material test.Source image · Image bytes unchanged; displayed in full. ShareAlike applies to adaptations.
Representative catalog values. Check the exact grade and its linked conditions before using a setting.
260–290 (Bambu Lab)
260–290 (Bambu Lab)
—
—
—Enclosure required (passive)
Enclosure required (passive) — Bambu Lab specifies a 45–60 °C chamber
80 °C for 8–12 h (Bambu Lab)
80 °C for 8–12 h (Bambu Lab)
Open a topic to explore the complete data. Each value keeps its original conditions, units and dated sources.
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Base polymer / chemistry | High-temperature carbon-fibre nylon. Bambu Lab's PAHT-CF and Polymaker's PA612-CF15 both use a long-chain polyamide matrix for lower moisture uptake than PA6 | 2 sources
|
| Density (g/cm³) | 1.03 (Polymaker PA612-CF15) and 1.06 (Bambu Lab), ISO 1183 | 2 sources
|
| Typical price (USD/kg) | 1 kg-equivalent spools cluster near 60 | 2 sources
|
| Price range across brands (USD/kg) | 50–70 across brands; Bambu Lab 50, Polymaker Fiberon PA612-CF15 70 | 2 sources
|
| Market availability (1–5) | Available from several mainstream brands | 2 sources
|
| Spool sizes & diameters | 1.75 mm; 0.5 and 1 kg spools | 2 sources
|
| Typical applications | Under-bonnet and near-motor parts needing 170 °C-plus heat deflection with less humidity drift than PA6 | 2 sources
|
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Nozzle temperature (°C) | 260–290 (Bambu Lab) | 1 source
|
| Enclosure / chamber requirement (1–5) | Enclosure required (passive) — Bambu Lab specifies a 45–60 °C chamber | 1 source
|
| Recommended chamber temperature (°C) | 45–60 (Bambu Lab) | 1 source
|
| Bed surface & adhesion aid | PEI sheet with a glue stick, or a dedicated adhesive such as Magigoo | 2 sources
|
| Maximum volumetric flow (mm³/s; see test conditions) (mm³/s) | 8 at Bambu Lab's 100 mm/s cap on a 0.4 mm nozzle at 0.2 mm layer | 2 sources
|
| Bed-adhesion difficulty (1–5) | Needs a specific surface plus adhesive | 1 source
|
| Stringing / oozing tendency (1–5) | Moderate — retraction tuning needed | 1 source
|
| Overall printing difficulty (1–5) | Expert / industrial hardware only | 2 sources
|
| Extruder requirement | 0.6 mm nozzle recommended by Bambu Lab; 0.4 and 0.8 also supported | 1 source
|
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Nozzle hardness required (1–4) | Hardened steel required — Polymaker measures brass nozzle life at about 9 h on PA612-CF15 and recommends hardened steel or ruby | 1 source
|
| Abrasiveness (1–5) | Highly abrasive — standard CF composite; Polymaker puts brass nozzle life at roughly 9 h on PA612-CF15 | 1 source
|
| Nozzle clog risk (1–5) | High — jams from moisture, heat creep or particles | 1 source
|
| Heat-creep / jam sensitivity (1–5) | Moderate — good heatbreak cooling needed | 1 source
|
| Hotend requirement | May require an all-metal hot end (Simplify3D) | 1 source
|
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Moisture absorption (hygroscopicity) (1–5) | High (0.8–2 %) — 0.88 % saturated at 25 °C / 55 % RH for Bambu Lab PAHT-CF, a third of its PA6-CF; Polymaker's PA612-CF15 reaches 2.2 % equilibrium | 3 sources
|
| Equilibrium moisture content at ~50 % RH (%) | 0.88 saturated at 25 °C / 55 % RH (Bambu Lab PAHT-CF); 2.2 equilibrium (Polymaker PA612-CF15) | 2 sources
|
| Drying temperature & time | 80 °C for 8–12 h (Bambu Lab) | 1 source
|
| Effect of moisture on strength | Polymaker publishes dry and wet printed blocks for PA612-CF15 itself: at 2.57 % moisture tensile falls only 91.9 → 83.1 MPa and modulus 5137 → 3991 MPa — the PA612 backbone absorbs far less than PA6 | 2 sources
|
| Storage requirement | Sealed below 20 % RH with desiccant | 1 source
|
| Hydrolysis at melt temperature | Polymaker specifies an 80–100 °C dry and storage below 20 % RH; no molecular-weight loss figure is published, and the wet data it does publish is conditioning rather than melt hydrolysis | 2 sources
|
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Tensile strength (XY) (MPa) | 92 ± 7 (Bambu Lab) and 91.9 ± 2.0 (Polymaker PA612-CF15, dry/annealed) printed XY, ISO 527; the Polymaker grade only falls to 83.1 ± 2.2 conditioned to 2.57 % moisture | 2 sources
|
| Young's modulus (MPa) | 3860 ± 230 (Bambu Lab) and 5137 ± 192 (Polymaker PA612-CF15, dry) printed XY, ISO 527; Polymaker 3991 ± 137 conditioned | 2 sources
|
| Elongation at break (%) | 2.6 ± 0.2 dry (Polymaker PA612-CF15) to 8.4 ± 1.8 (Bambu Lab) printed XY, ISO 527; Polymaker 4.1 ± 0.3 conditioned | 2 sources
|
| Flexural modulus (MPa) | 4230 ± 210 printed XY, ISO 178 (Bambu Lab) | 1 source
|
| Charpy impact, notched (kJ/m²) | 8.1 ± 0.8 printed XY dry and 7.7 ± 0.5 conditioned, ISO 179 notched (Polymaker PA612-CF15) | 1 source
|
| Other impact data | Charpy unnotched 57.5 ± 3.4 and notched 22.8 ± 1.8 printed XY (Bambu Lab, ISO 179) | 1 source
|
| Layer adhesion / Z tensile (MPa) | 47 ± 5 (Bambu Lab) and 48.3 ± 3.9 (Polymaker PA612-CF15, dry) printed Z, ISO 527; Polymaker 35.6 ± 3.0 conditioned | 2 sources
|
| Brittleness (1–5) | Moderate | 1 source
|
| Hardness (scale-specific) (Shore A / Shore D / Rockwell) | Rockwell M88 / R117 on extruded PA66-GF30 stock (ASTM D785); no figure is published for a carbon-fibre long-chain nylon filament | 1 source
|
| Creep resistance / sustained load (1–5) | Good. Ensinger rates its PA66-CF30 compound for sustained static and dynamic load with 110 °C continuous service; the long-chain PA612 matrix takes up 0.88 % at saturation, a third of the same maker's PA6-CF, so it holds dimension better | 2 sources
|
| Fatigue / repeated-flex resistance (1–5) | Good. Ensinger states carbon-filled PA66 compounds have improved fatigue strength in tension, flexure and compression | 1 source
|
| Elasticity / flexibility (1–5) | Rigid | 1 source
|
| Z strength as % of XY (%) | 51 (Bambu Lab) to 53 (Polymaker PA612-CF15), printed | 2 sources
|
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| HDT at 0.45 MPa (°C) | 175 (Polymaker PA612-CF15) and 194 (Bambu Lab), ISO 75 at 0.45 MPa | 2 sources
|
| HDT at 1.8 MPa (°C) | 114 (Polymaker PA612-CF15) and 170 (Bambu Lab), ISO 75 at 1.8 MPa | 2 sources
|
| Glass transition (Tg) (°C) | 70 (Bambu Lab, DSC) | 1 source
|
| Melting point / Vicat (°C) | 210 (Polymaker PA612-CF15) and 225 (Bambu Lab) melting, DSC; Vicat 206 (Polymaker) | 2 sources
|
| Flammability / UL 94 | Flammable; no UL 94 rating published for the grades surveyed | 1 source
|
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| UV resistance (1–5) | Months outdoors before embrittlement — unstabilised polyamide yellows under UV | 1 source
|
| Chemical resistance | Withstands oils, fuels and alkalis | 1 source
|
| Water / humidity resistance in service (1–5) | Absorbs water, properties shift — less than PA6 but more than PA12 | 2 sources
|
| Food contact | Not food-contact certified as filament | 1 source
|
| Biodegradability / compostability | Not biodegradable | 1 source
|
| Recyclability | Not accepted in household plastic collection | 1 source
|
| Electrical & ESD properties | Surface resistivity above 10¹² ohm — insulating (Polymaker PA612-CF15, ANSI/ESD S11.11) | 1 source
|
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Fume toxicity (1–5) | Moderate — measurable VOCs and UFPs, ventilation advised | |
| VOC emission rate (µg/min) | Up to 180 caprolactam, the dominant VOC from nylon and the largest single-VOC rate in the study | |
| Ultrafine-particle emission rate (particles/min) | ≈2 × 10⁸ median for nylon — low for particles despite the highest VOC mass measured | |
| Hazardous species emitted | Caprolactam, at up to 180 µg/min from nylon filament | |
| Ventilation / filtration requirement (1–5) | Ventilated room or enclosure recommended | |
| Dust & fibre handling hazard | Fibre is bound in the matrix; sanding dust should not be inhaled | 1 source
|
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Sanding & machining | Sands poorly — gums rather than powders | 1 source
|
| Gluing & solvent welding | Cyanoacrylate; no common solvent welds polyamide | 1 source
|
| Vapour / chemical smoothing | No practical vapour smoothing | 1 source
|
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Soluble in | Formic acid, phenol, m-cresol and hexafluoroisopropanol dissolve the matrix at 23 °C, leaving the fibre; laboratory reagents. | 1 source |
| Softened or crazed by | Zinc chloride solutions stress-crack the nylon matrix, alcoholic calcium chloride dissolves it, mineral acids attack it. | 1 source |
| Solvent welding & smoothing agent | None — nylon's only solvents (formic acid, phenol, HFIP) degrade the part, and the fibre blocks surface flow anyway. | 1 source |
Values describe representative grades, not every spool. Manufacturer datasheets and independent tests retain their source labels and dates. Printed orientation, test method, conditioning and formulation can change results. Unknown values are —. A listed use is not a certification. Shore A, Shore D and Rockwell hardness are separate scales.
Historical USD/kg snapshots. Read each listing’s sale/from qualifiers, spool mass, source date, shipping and tax notes. Product figures are separate from the material summary.
$49.99 / 1 kg spool, us.store.bambulab.com, Aug 2026
HDT 194 °C at 0.45 MPa and 170 °C at 1.8 MPa; saturated water absorption 0.88 %, a third of Bambu Lab's PA6-CF.
Open product listing ↗| Density (g/cm³) | 1.06 (ISO 1183) |
|
|---|---|---|
| Nozzle temperature (°C) | 260–290 |
|
| Bed temperature (°C) | 80–100 |
|
| Equilibrium moisture content at ~50 % RH (%) | 0.88 saturated at 25 °C / 55 % RH |
|
| Tensile strength (XY) (MPa) | 92 ± 7 (printed XY, ISO 527); Z 47 |
|
| Young's modulus (MPa) | 3860 ± 230 (printed XY, ISO 527); Z 2180 |
|
| Elongation at break (%) | 8.4 ± 1.8 (printed XY, ISO 527); Z 4.1 |
|
| Flexural strength (MPa) | 125 ± 7 (printed XY, ISO 178); Z 61 |
|
| Flexural modulus (MPa) | 4230 ± 210 (printed XY, ISO 178); Z 1820 |
|
| Charpy impact, notched (kJ/m²) | 22.8 ± 1.8 (printed XY, ISO 179, notched) |
|
| Other impact data | Charpy unnotched 57.5 kJ/m² XY, 13.3 kJ/m² Z (printed, ISO 179) |
|
| Layer adhesion / Z tensile (MPa) | 47 ± 5 (printed Z, ISO 527) |
|
| Z strength as % of XY (%) | 51 (printed Z 47 vs XY 92, ISO 527) |
|
| HDT at 0.45 MPa (°C) | 194 (ISO 75, 0.45 MPa) |
|
| HDT at 1.8 MPa (°C) | 170 (ISO 75, 1.8 MPa) |
|
| Glass transition (Tg) (°C) | 70 (DSC) |
|
| Melting point / Vicat (°C) | 225 melting (DSC); Vicat 220 (ISO 306) |
|
$34.99 / 0.5 kg spool = $69.98/kg, Polymaker product catalogue, Aug 2026
Handle fiberon-pa612-cf. 15 wt% carbon fibre on a PA612 matrix; Young's modulus 5137 MPa printed XY.
Open product listing ↗| Density (g/cm³) | 1.03 (ISO 1183) |
|
|---|---|---|
| Nozzle temperature (°C) | 250–300 |
|
| Bed temperature (°C) | 40–50 |
|
| Equilibrium moisture content at ~50 % RH (%) | 2.2 equilibrium water absorption |
|
| Tensile strength (XY) (MPa) | 91.9 ± 2.0 (printed XY, ISO 527) |
|
| Young's modulus (MPa) | 5136.7 ± 192.2 (printed XY, ISO 527) |
|
| Elongation at break (%) | 2.6 ± 0.2 dry (printed XY, ISO 527); Z 2.1 |
|
| Flexural strength (MPa) | 138.0 ± 2.2 dry (printed XY, ISO 178); Z 73.5 |
|
| Flexural modulus (MPa) | 4583.5 ± 62.7 dry (printed XY, ISO 178); Z 2264.8 |
|
| Charpy impact, notched (kJ/m²) | 8.1 ± 0.8 dry (printed XY, ISO 179, notched) |
|
| Other impact data | Charpy unnotched 29.9 kJ/m² XY, 12.6 kJ/m² Z (printed dry, ISO 179) |
|
| Layer adhesion / Z tensile (MPa) | 48.3 ± 3.9 dry (printed Z, ISO 527); 35.6 wet |
|
| Z strength as % of XY (%) | 53 (printed Z 48.3 vs XY 91.9 dry, ISO 527) |
|
| HDT at 0.45 MPa (°C) | 175 (ISO 75, 0.45 MPa) |
|
| HDT at 1.8 MPa (°C) | 114 (ISO 75, 1.8 MPa) |
|
| Melting point / Vicat (°C) | 210 melting (DSC); Vicat 206.2 (ISO 306) |
|
| Flammability / UL 94 | UL 94 HB at 1.5 mm |
|
| Electrical & ESD properties | Surface resistivity >10^12 Ω (ANSI/ESD S11.11) |
|
Compare High-temperature CF nylon (PAHT-CF) with another filament
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