3D Printing Info

Filament comparison

PAHT-CF vs HT soluble

Compare printing settings, strength, heat resistance, dated prices and sources.

High-temperature CF nylon (PAHT-CF) guideHigh-temperature support guide

2 selected · all documented properties

Open these two in the interactive comparisonMore PAHT-CF comparisonsMore HT soluble comparisons
PAHT-CF vs HT soluble — documented properties and sources
PropertyHigh-temperature CF nylon (PAHT-CF)PAHigh-temperature supportSUPPORT
Market snapshot
Listing priceUSD/kg; dated snapshots$59.98/kg median; $49.99–$69.98/kg across 2 dated product listings$209.00/kg median; $100.00–$290.00/kg across 4 dated product listings
Identity & Market
Base polymer / chemistryHigh-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[1][2]Break-away support compounded to survive high-temperature print chambers; 3DXTech sells separate grades for PC/ABS and for the PAEK and PEI class[3][4]
Densityg/cm³1.03 (Polymaker PA612-CF15) and 1.06 (Bambu Lab), ISO 1183[1][2]1.37 (3DXTech THERMAX HTS1, ISO 1183)[3]
Typical priceUSD/kg1 kg-equivalent spools cluster near 60[1][5]1 kg-equivalent spools cluster near 168[6]
Price range across brandsUSD/kg50–70 across brands; Bambu Lab 50, Polymaker Fiberon PA612-CF15 70[1][5]100–290 across grades; 3DXTech THERMAX MTS1 100 at 2 kg, HTS2 168 at 250 g, HTS1 250 at 500 g, IEMAI 3D HT-SP 290 at 1 kg[6][7]
Market availability1–5Available from several mainstream brands[1][5]Niche, a handful of specialist brands[6][7]
Spool sizes & diameters1.75 mm; 0.5 and 1 kg spools[5][1]1.75 mm; 250 g, 500 g, 1 kg and 2 kg spools[6]
Typical applicationsUnder-bonnet and near-motor parts needing 170 °C-plus heat deflection with less humidity drift than PA6[1][2]Support for PEEK, PEI and PC-class prints, where PVA and PLA-based supports would decompose[3][4]
Printing Parameters
Nozzle temperature°C260–290 (Bambu Lab)[1]Not documented
Enclosure / chamber requirement1–5Enclosure required (passive) — Bambu Lab specifies a 45–60 °C chamber[1]Actively heated chamber required — it is used inside high-temperature builds[3]
Recommended chamber temperature°C45–60 (Bambu Lab)[1]Not documented
Bed surface & adhesion aidPEI sheet with a glue stick, or a dedicated adhesive such as Magigoo[8][9]Not documented
Maximum volumetric flow (mm³/s; see test conditions)mm³/s8 at Bambu Lab's 100 mm/s cap on a 0.4 mm nozzle at 0.2 mm layer[1][10]Not documented
Bed-adhesion difficulty1–5Needs a specific surface plus adhesive[8]Not documented
Stringing / oozing tendency1–5Moderate — retraction tuning needed[9]Not documented
Overall printing difficulty1–5Expert / industrial hardware only[1][11]Expert / industrial hardware only[3]
Extruder requirement0.6 mm nozzle recommended by Bambu Lab; 0.4 and 0.8 also supported[1]A dual-extruder machine rated for high-temperature materials; 3DXTech states the grade is intended for dual-extruder printers designed to print high-temp materials[12]
Hardware Wear & Reliability
Nozzle hardness required1–4Hardened steel required — Polymaker measures brass nozzle life at about 9 h on PA612-CF15 and recommends hardened steel or ruby[2]Brass fine indefinitely[3]
Abrasiveness1–5Highly abrasive — standard CF composite; Polymaker puts brass nozzle life at roughly 9 h on PA612-CF15[2]Non-abrasive[3]
Nozzle clog risk1–5High — jams from moisture, heat creep or particles[11]Moderate — needs dry filament and a clean nozzle; 3DXTech lists no special nozzle concerns but a mandatory 120 °C pre-dry for HTS1 and 80 °C for MTS1[12][13]
Heat-creep / jam sensitivity1–5Moderate — good heatbreak cooling needed[8]Not documented
Hotend requirementMay require an all-metal hot end (Simplify3D)[8]Not documented
Moisture Behaviour
Moisture absorption (hygroscopicity)1–5High (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[1][2][14]Not documented
Equilibrium moisture content at ~50 % RH%0.88 saturated at 25 °C / 55 % RH (Bambu Lab PAHT-CF); 2.2 equilibrium (Polymaker PA612-CF15)[1][2]Not documented
Drying temperature & time80 °C for 8–12 h (Bambu Lab)[1]Not documented
Effect of moisture on strengthPolymaker 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][15]No dry-versus-conditioned figures are published; 3DXTech mandates a 120 °C, 4 h pre-dry for HTS1 and 80 °C for MTS1 because trapped water flashes to steam at these nozzle temperatures[12][13]
Storage requirementSealed below 20 % RH with desiccant[11]Not documented
Hydrolysis at melt temperaturePolymaker 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[16][17]Not documented
Mechanical Properties
Tensile strength (XY)MPa92 ± 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[1][2]Not documented
Young's modulusMPa3860 ± 230 (Bambu Lab) and 5137 ± 192 (Polymaker PA612-CF15, dry) printed XY, ISO 527; Polymaker 3991 ± 137 conditioned[1][2]Not documented
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[1][2]Not documented
Flexural modulusMPa4230 ± 210 printed XY, ISO 178 (Bambu Lab)[1]Not documented
Charpy impact, notchedkJ/m²8.1 ± 0.8 printed XY dry and 7.7 ± 0.5 conditioned, ISO 179 notched (Polymaker PA612-CF15)[2]Not documented
Other impact dataCharpy unnotched 57.5 ± 3.4 and notched 22.8 ± 1.8 printed XY (Bambu Lab, ISO 179)[1]Not documented
Layer adhesion / Z tensileMPa47 ± 5 (Bambu Lab) and 48.3 ± 3.9 (Polymaker PA612-CF15, dry) printed Z, ISO 527; Polymaker 35.6 ± 3.0 conditioned[1][2]Not documented
Brittleness1–5Moderate[1]Not documented
Hardness (scale-specific)Shore A / Shore D / RockwellRockwell M88 / R117 on extruded PA66-GF30 stock (ASTM D785); no figure is published for a carbon-fibre long-chain nylon filament[18]Not documented
Creep resistance / sustained load1–5Good. 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[19][2]Not documented
Fatigue / repeated-flex resistance1–5Good. Ensinger states carbon-filled PA66 compounds have improved fatigue strength in tension, flexure and compression[19]Not documented
Elasticity / flexibility1–5Rigid[1]Not documented
Z strength as % of XY%51 (Bambu Lab) to 53 (Polymaker PA612-CF15), printed[1][2]Not documented
Wear resistance & frictionNot documented3DXTech marks tensile strength, modulus and elongation as not applicable for its support grades — they are not characterised as structural materials[3]
Thermal Properties
HDT at 0.45 MPa°C175 (Polymaker PA612-CF15) and 194 (Bambu Lab), ISO 75 at 0.45 MPa[1][2]Not documented
HDT at 1.8 MPa°C114 (Polymaker PA612-CF15) and 170 (Bambu Lab), ISO 75 at 1.8 MPa[1][2]205 (THERMAX HTS1, printed XY, ISO 75 at 1.8 MPa)[3]
Glass transition (Tg)°C70 (Bambu Lab, DSC)[1]225 (3DXTech THERMAX HTS1, DSC) — high enough to stay solid inside a PEI or PEEK build[3]
Melting point / Vicat°C210 (Polymaker PA612-CF15) and 225 (Bambu Lab) melting, DSC; Vicat 206 (Polymaker)[1][2]Not documented
Flammability / UL 94Flammable; no UL 94 rating published for the grades surveyed[16]Not documented
Environment & Chemical
UV resistance1–5Months outdoors before embrittlement — unstabilised polyamide yellows under UV[9]Not documented
Chemical resistanceWithstands oils, fuels and alkalis[9]Not documented
Water / humidity resistance in service1–5Absorbs water, properties shift — less than PA6 but more than PA12[15][1]Not documented
Food contactNot food-contact certified as filament[9]Not documented
Biodegradability / compostabilityNot biodegradable[9]Not documented
RecyclabilityNot accepted in household plastic collection[9]Not documented
Electrical & ESD propertiesSurface resistivity above 10¹² ohm — insulating (Polymaker PA612-CF15, ANSI/ESD S11.11)[2]Surface resistance above 10^13 ohm/sq on all three THERMAX support grades (ASTM D257) — insulating[3][20][4]
Health & Safety
Fume toxicity1–5Moderate — measurable VOCs and UFPs, ventilation advised[21]Low hazard — minimal VOC and particle emission; none of these materials was in the chamber study[21]
VOC emission rateµg/minUp to 180 caprolactam, the dominant VOC from nylon and the largest single-VOC rate in the study[21]Not documented
Ultrafine-particle emission rateparticles/min≈2 × 10⁸ median for nylon — low for particles despite the highest VOC mass measured[21]Not documented
Hazardous species emittedCaprolactam, at up to 180 µg/min from nylon filament[21]Not documented
Ventilation / filtration requirement1–5Ventilated room or enclosure recommended[21]Open a window / occasional ventilation[21]
Dust & fibre handling hazardFibre is bound in the matrix; sanding dust should not be inhaled[16]Not documented
Post-Processing
Sanding & machiningSands poorly — gums rather than powders[8]Not documented
Gluing & solvent weldingCyanoacrylate; no common solvent welds polyamide[8]Not documented
Vapour / chemical smoothingNo practical vapour smoothing[8]Not documented
Support material pairingNot documentedThis is the support material. MTS1 is matched to PC/ABS and PC; HTS1 and HTS2 to the higher-temperature classes[4][3]
Solvents & Solubility
Soluble inFormic acid, phenol, m-cresol and hexafluoroisopropanol dissolve the matrix at 23 °C, leaving the fibre; laboratory reagents.[22]Aqueous alkali, not water: IEMAI specifies an alkaline bath in an ultrasonic cleaner until the support dissolves.[7]
Softened or crazed byZinc chloride solutions stress-crack the nylon matrix, alcoholic calcium chloride dissolves it, mineral acids attack it.[22]Not documented
Solvent welding & smoothing agentNone — nylon's only solvents (formic acid, phenol, HFIP) degrade the part, and the fibre blocks surface flow anyway.[22]None — the alkaline bath dissolves the support rather than welding anything.[7]

Material entries describe families or representative grades, not an interchangeable specification for every spool. Test methods, orientations and conditions may differ. Unknown values are marked “Not documented”. Prices and source dates remain historical snapshots; check the linked guide for product details. Differences highlight text, not a universal winner.

Sources for this comparison

  1. Bambu Filament Technical Data Sheet — PAHT-CF Bambu Lab · 2026-08 · tds
  2. Fiberon PA612-CF15 Technical Data Sheet V1.1 Polymaker · 2024-12 · tds
  3. THERMAX HTS1 Break Away Support Technical Data Sheet v1.0 3DXTech · 2026-08 · tds
  4. THERMAX MTS1 Break Away Support Technical Data Sheet v1.0 3DXTech · 2026-08 · tds
  5. Polymaker product catalogue Polymaker · 2026-08 · vendor
  6. 3DXTech product catalogue 3DXTech · 2026-08 · vendor
  7. IEMAI 3D HT-SP alkaline-soluble support filament — store page IEMAI 3D · 2026-08 · vendor
  8. Nylon — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  9. PA (Nylon) — material basics Polymaker Wiki · 2026-08 · doc
  10. Max volumetric speed Prusa Knowledge Base · 2026-08 · doc
  11. Wet Filament — signs, causes and drying Polymaker Wiki · 2026-08 · doc
  12. THERMAX HTS1 — product page 3DXTech · 2026-08 · vendor
  13. THERMAX MTS1 — product page 3DXTech · 2026-08 · vendor
  14. Bambu Filament Technical Data Sheet — PA6-CF Bambu Lab · 2026-08 · tds
  15. Moisture Conditioning — effect on printed nylon properties Polymaker Wiki · 2026-08 · doc
  16. Fiberon PA6-CF20 Technical Data Sheet V1.1 Polymaker · 2024-12 · tds
  17. PolyMide CoPA Technical Data Sheet V5.4 (dry and wet status blocks) Polymaker · 2024-11 · tds
  18. TECAMID 66 GF30 black (PA66-GF30) — stock shape properties Ensinger · 2026-08 · tds
  19. TECACOMP PA66 CF30 black — injection-moulding compound Ensinger · 2026-08 · tds
  20. THERMAX HTS2 Break Away Support Technical Data Sheet v1.0 3DXTech · 2026-08 · tds
  21. Emissions of Ultrafine Particles and Volatile Organic Compounds from Commercially Available Desktop Three-Dimensional Printers with Multiple Filaments (Azimi et al.) Environmental Science & Technology 50(3) 1260-1268 · 2016-01 · paper
  22. Ultramid Nylon Chemical Resistance guide (unmodified PA6 B27E and PA66 A27E) BASF · 2026-08 · tds