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Bambu Lab PAHT-CF
High-temperature PA, carbon-fibre filledFilamentFDMBambu Lab
Quick answer
Bambu Lab PAHT-CF is a carbon-fibre-filled high-temperature polyamide filament: 92 MPa tensile strength, 3860 MPa modulus and 8.4% elongation at break in XY per Bambu's TDS, with the highest HDT of the filaments listed here at 170 °C under 1.8 MPa load — and more ductility than PA6-CF grades.
PAHT-CF is Bambu's step up from PA6-CF: a higher-temperature polyamide base (the "HT") with carbon fibre. The datasheet profile is distinctive — slightly lower strength and stiffness than its PA6-CF sibling, but notably higher elongation (8.4% vs 5.8%) and the best load-bearing heat resistance in this filament set.
That combination suits parts that live hot and take knocks: ducts, covers and components near heat sources where PA6-CF's brittleness is a liability.
Properties (manufacturer datasheet)
| Property | Value | Test method / note |
|---|---|---|
| Tensile strength (X-Y) | 92 MPa | ±7; Z: 47 MPa |
| Young's modulus (X-Y) | 3860 MPa | ±230; Z: 2180 MPa |
| Elongation at break (X-Y) | 8.4% | ±1.8; Z: 4.1% |
| HDT @ 1.8 MPa | 170 °C | ISO 75; @ 0.45 MPa: 194 °C |
| Density | 1.06 g/cm³ | ISO 1183 |
| Nozzle temperature | 260–290 °C | Manufacturer recommendation |
| Drying | 80 °C for 8–12 h | TDS, blast drying oven |
Values are reproduced from the manufacturer source(s) listed below, exactly as published. Properties the manufacturer does not publish are omitted rather than estimated — see the sourcing policy.
Processing notes
- Nozzle temperature 260–290 °C per the TDS (v3.0); hardened nozzle and extruder components required.
- Drying: 80 °C for 8–12 h in a blast drying oven; Bambu's store page summarises this as drying at 80 °C for 12 h before printing.
- Density 1.06 g/cm³ (ISO 1183) — the lightest filament in this database, reflecting the base polymer.
Typical applications
- Hot-environment covers, ducts and housings
- End-use parts needing heat resistance plus impact tolerance
- Automotive and machinery components within temperature limits
- Functional parts where PA6-CF is too brittle
Frequently asked questions
PAHT-CF or PA6-CF?
PA6-CF is stronger and stiffer on paper (102 MPa, 4430 MPa). PAHT-CF wins on elongation (8.4% vs 5.8%) and HDT at 1.8 MPa (170 vs 164 °C). Choose by failure mode: static stiffness → PA6-CF; heat plus knocks → PAHT-CF.
What polyamide is PAHT?
Bambu markets it as a high-temperature polyamide (a PA12-family-based blend in its material documentation) filled with carbon fibre. The verifiable engineering facts are the TDS values above; this page does not speculate beyond them.
Does PAHT-CF still need drying?
Yes — 80 °C for 8–12 h per the TDS. "High-temperature" describes the printed part's service behaviour, not moisture immunity; all polyamides are hygroscopic.
Last updated: November 2026