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Bambu Lab PA6-CF
PA6, carbon-fibre filledFilamentFDMBambu Lab
Quick answer
Bambu Lab PA6-CF is a carbon-fibre PA6 filament tuned for the Bambu ecosystem: 102 MPa tensile strength and 4430 MPa Young's modulus in XY, HDT of 164 °C at 1.8 MPa, per Bambu's TDS — with a gentler drying spec than most PA6-CF grades: 80 °C for 8–12 h.
Bambu's PA6-CF trades a little of the Polymaker grade's extreme stiffness for a broader printing window (260–290 °C) and Bambu's usual spool/AMS integration. Its datasheet is unusually complete, publishing XY and Z values with tolerances for every property.
As with all PA-CF filaments, the Z column is the design constraint: 48 MPa strength and 3.7% elongation across layers versus 102 MPa and 5.8% within them.
Properties (manufacturer datasheet)
| Property | Value | Test method / note |
|---|---|---|
| Tensile strength (X-Y) | 102 MPa | ±7; Z: 48 MPa |
| Young's modulus (X-Y) | 4430 MPa | ±310; Z: 2170 MPa |
| Elongation at break (X-Y) | 5.8% | ±1.6; Z: 3.7% |
| HDT @ 1.8 MPa | 164 °C | ISO 75; @ 0.45 MPa: 186 °C |
| Density | 1.09 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 required for carbon fibre.
- Drying: 80 °C for 8–12 h in a blast drying oven per the TDS (Bambu also lists heatbed drying at 90–100 °C for 12 h on its printers).
- Density 1.09 g/cm³ (ISO 1183).
Typical applications
- Structural desktop-printed components
- Brackets, mounts and enclosures needing heat resistance
- Functional prototypes in the Bambu Lab ecosystem
- End-use parts where PA6-CF properties suffice without powder-bed processing
Frequently asked questions
Bambu PA6-CF or Polymaker PA6-CF?
On datasheet numbers, Polymaker's grade is stiffer (8636 vs 4430 MPa modulus) and stronger in XY (109.3 vs 102 MPa), but demands 280–300 °C and a 100 °C / 10 h dry. Bambu's prints cooler and dries gentler (80 °C, 8–12 h). Test methods are both ISO-based, but specimen setups differ — treat the gap as indicative.
Can it go in the AMS?
Carbon-fibre filaments are abrasive and comparatively brittle on the spool path; follow Bambu's current guidance for your specific AMS model, and expect to need hardened extruder gears and nozzle.
How dry is dry enough?
Bambu specifies 80 °C for 8–12 h before printing. PA6-CF that has sat out should be re-dried; printing from a dry box preserves the investment.
Sources
Last updated: November 2026