Bambu Lab PAHT-CF

Product features

• Low moisture absorption

• Excellent mechanical properties and layer adhesion

• High tensile strength

• Comes with reusable high-temperature coil

• Diameter: 1.75mm +/- 0.03mm

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Caution when using

• 0.6 mm nozzle recommended

• 0.2mm nozzle is not compatible

• Stainless steel nozzle not recommended

• Dry before use

• AMS compatible

• AMS Lite not compatible

• Printer with cabinet required

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Note: PAHT-CF is an upgraded version of PA-CF (PA-CF has been discontinued).

Bamboo PAHT-CF

Bambu PAHT-CF is a composite of PA12 and carbon fiber. It inherits the low water absorption properties of PA12 and the high performance qualities of carbon fiber. Bambu PAHT-CF offers excellent mechanical and thermal properties that are maintained even when the printed parts get wet. The higher Z-layer adhesion and flexibility make the material ideal for creating technical components such as functional prototypes, machining fixtures, molds, jigs and low-volume production parts.

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Low water absorption

With a 50% lower water absorption rate compared to regular PA-CF,
Bambu PAHT-CF maintains excellent mechanical properties and dimensional stability even when exposed to high humidity.

Deformation from dry to wet

Comparison of mechanical properties

Property	Normal PA-CF	PAHT-CF
Saturated water absorption rate / % (25 °C, 55 % RH)	1.70	0.88
Flexural strength – XY / MPa (dry)	128	125
Flexural strength – XY / MPa (wet)	76	115
Flexural strength – Z / MPa (dry)	48	61
Flexural strength – Z / MPa (wet)	34	49
Flexural modulus – XY / MPa (dry)	4420	4230
Flexural modulus – XY / MPa (wet)	2210	3640
Flexural modulus – Z / MPa (dry)	1470	1820
Flexural modulus – Z / MPa (wet)	770	1480
Decrease in mechanical properties after water absorption / %	40%–45%	12%–18%

Both PA-CF and PAHT-CF must be dried at 80 °C for 12 hours before printing.

Excellent Z-binding

Bamboo PAHT-CF shows significantly higher layer adhesion in the Z-direction compared to regular PA-CF,
which gives the material the ability to withstand high levels of impact or strain without cracking or deforming.

Z-layer Performance

Property	Normal PA-CF	PAHT-CF	Improved %
Bending strength – Z/MPa	48	61	27%
Flexural modulus – Z/MPa	1470	1820	24%
Impact strength – Z/(kJ/m²)	5.7	13.3	133%

*Both PA-CF and PAHT-CF must be dried at 80°C for 12 hours before printing.

High tensile strength
Bambu PAHT-CF is designed to meet the requirements of various industrial and technical applications where high strength and durability are required.

Designed for high temperature resistance
Bambu PAHT-CF has a heat distortion temperature of up to 194℃ (0.45 MPa)*, making it useful in situations where the printed parts can be exposed to high temperatures without deforming or losing strength.

*Long-term temperature resistance depends on the model structure and usage scenario.

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Reusable spool
The Bambu PAHT-CF comes with a high-temperature resistant coil that is not easily deformed during the drying process. In line with our concept of reducing plastic waste, the coil can also be reused with other Bambu refills.

Accessory compatibility

Recommended	Not recommended
Building board	Smooth PEI sheet, Textured PEI sheet
Hotend	Hotend with hardened steel 0.4 mm / 0.6 mm (recommended) / 0.8 mm*
Glue	Glue stick

Increasing the nozzle size reduces the likelihood of clogging, but also reduces print quality. Therefore, it is recommended to use a 0.6mm hardened steel nozzle to avoid clogging while maintaining optimal print quality.

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RFID for intelligent printing

All print parameters are embedded in RFID, which can be read via our AMS (Automatic Material System).

Load and print! No more time-consuming setup processes.

Comparison of parameters

Learn more about the comparison of different filaments in the Bambu Filament Guide >>

Property	PET-CF	PAHT-CF
Composition	PET, carbon fiber	PA 12 and other long-chain PA, carbon fiber
Hotend compatibility	Hotend with hardened steel 0.4 mm / 0.6 mm (recommended) / 0.8 mm	Hotend with hardened steel 0.4 mm / 0.6 mm (recommended) / 0.8 mm
Build plate compatibility	Cool Plate SuperTack, Smooth PEI Plate, Textured PEI Plate	Smooth PEI sheet, Textured PEI sheet
Glue	Glue stick / Liquid glue	Glue stick
AMS compatibility	No	Yes
Print speed	< 100 mm/s	< 100 mm/s
Toughness (Impact Strength – XY)	36.0 kJ/m²	57.5 kJ/m²
Strength (Bending Strength – XY)	131 MPa	125 MPa
Stiffness (Flexural Modulus – XY)	5320 MPa	4230 MPa
Layer Cohesion (Impact Strength – Z)	4.5 kJ/m²	13.3 kJ/m²
Heat resistance (HDT, 0.45 MPa)	205 °C	194 °C
Saturated water absorption rate / % (25 °C, 55% RH)	0.37	0.88

Recommended print settings

Drying settings (Blast Drying Oven): 80 °C, 8–12 hours
Humidity in container during printing and storage: < 20% RH (sealed, with desiccant)
Nozzle temperature: 260–290 °C
Build plate temperature (with glue): 80–100 °C
Print speed: < 100 mm/s

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Physical properties

• Density: 1.06 g/cm³

• Vicat softening temperature: 220 °C

• Heat distortion temperature: 194 °C

• Melting temperature: 225 °C

• Melt Index: 14.4 ± 2.0 g/10 min

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Mechanical properties

• Tensile strength: 92 ± 7 MPa

• Elongation at break: 8.4 ± 1.8%

• Flexural modulus: 4230 ± 210 MPa

• Bending strength: 125 ± 7 MPa

• Impact strength: 57.5 ± 3.4 kJ/m²

Downloads

• Filament TDS

• Filament MSDS

• Filament RoHS

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Printing tips

• Drying conditions: 80 °C for 8 hours. PAHT-CF is very sensitive to moisture. For optimal printing performance, additional drying is recommended before use and after storage. For more details, please refer to: Filament drying instructions on WIKI.

• Bambu PAHT-CF requires high thermal insulation during the printing process, making it unsuitable for open printers.

• For better printing results, see: Printing tips for Engineering materials on WIKI .

• When printing with support, it is recommended to remove support structures within 2 hours of printing to prevent them from sticking after absorbing moisture. If sticking occurs, dry the model to facilitate removal.

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Test conditions

Filament modes:

• Dry samples: were annealed and dried at 80 °C for 12 hours before testing.

• Wet samples: were placed under environmental conditions of 25 °C, 55% RH and reached saturated water absorption rate.