Bambu Lab PAHT-CF Black

SKU: N04-K0-1.75-1000-spl
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Bambu Lab PAHT-CF Black

This isn’t your average 3D printing filament. The Bambu Lab PAHT-CF Black is an advanced polyamide composite that laughs in the face of humidity and breakage. Upgraded from the standard PA-CF, this filament boasts a 50% lower water absorption rate, so your prints retain their precision and form even when the weather turns tropical. Not only is PAHT-CF as dimensionally stable as filaments come, it’s also as tough as nails. Thanks to increased adhesion between layers, parts printed in PAHT-CF can withstand impacts and stresses that would shatter normal prints.

Whether you’re prototyping parts for a drone, car components or anything else that demands both high performance and high durability, Bambu Lab PAHT-CF delivers where typical filaments fall short. This filament may be black, but it’s anything but basic. For 3D printing that pushes the limits of technology and tenacity, choose PAHT-CF.

Bambu Lab PAHT-CF is a composite of PA12 and carbon fiber. Inheriting the advantages of low water absorption from PA12 and high-performance carbon fiber, Bambu PAHT-CF offers excellent mechanical and thermal properties that can be maintained well even when the prints get wet. Higher Z adhesion layers and flexibility make it ideal for creating engineering parts such as functional prototypes, machining fixtures, injection molds, jigs, and low-volume production parts.


Low water absorption

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

Deflection from Dry to Wet


Mechanical Properties Comparison

Saturated Water Absorption Rate/% ( 25 °C, 55% RH ) 1.89 0.88
Bending Strength - XY/MPa (Dry) 141 140
Bending Strength - XY/MPa (Wet) 76 115
Bending Strength - Z/MPa (Dry) 47 70
Bending Strength - Z/MPa (Wet) 34 58
Bending Modulus - XY/MPa (Dry) 4480 4120
Bending Modulus - XY/MPa (Wet) 2210 3640
Bending Modulus - Z/MPa (Dry) 1470 1700
Bending Modulus - Z/MPa (Wet) 770 1480
Decline rate of mechanical properties after absorbing water/% 40%-45% 12%-18%

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


Exceptional Z-bonding

Bambu PAHT-CF shows much higher adhesion in Z layers compared to normal PA-CF,bringing it the ability to withstand high levels of impact or stress without breaking or deforming.


Z-layer Performance

Normal PA-CF PAHT-CF Improved %
Bending Strength - Z/MPa 47 70 49%
Bending Modulus - Z/MPa 1470 1700 16%
Impact Strength - Z/(kJ/m²) 5.7 13.3 133%

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

High tensile strength

Bambu PAHT-CF is designed to meet the demands of various industrial and engineering applications where high strength and durability are required.

Designed for high-temperature resistance

The heat deflection temperature of Bambu PAHT-CF is up to 194℃ (0.45MPa)*, making it useful in applications where the printed parts may be exposed to high temperatures without deforming or losing their strength.

*The long-term temperature resistance is related to the structure and usage scenario of the model itself.

Reusable spool

Bambu PAHT-CF comes with a high-temperature resistant spool, which is not prone to deformation in the drying process. Continuing our concept of reducing plastic waste, the spool can also be reused with other Bambu refills.


Accessory Compatibility

Recommended Not Recommended
Build Plate High Temperature Plate Engineering Plate Cool Plate
Hotend Hotend with Hardened Steel Nozzle (0.6 mm, 0.4 mm, 0.8 mm)* Hotend with Stainless Steel Nozzle (all size)
Hotend with Hardened Steel Nozzle (0.2 mm)
Glue Glue Stick Liquid Glue

*As the nozzle size increases, the probability of clogging decreases, but the print quality also decreases. Therefore, it is recommended to use a 0.6 mm Hardened Steel nozzle to avoid clogging while maintaining optimal print quality.

RFID for Intelligent Printing

All printing parameters are embedded in RFID, which can be read through our AMS (Automatic Material System).Load and print! No more tedious setting steps.


Printing Tips

• Bambu PAHT-CF needs proper drying before printing: recommended drying temperature is 80 ℃ for 5 hours in filament dryer, or 90 ℃ for 10 hours on heat bed. (Do not exceed 100 ℃ because the spool may melt). For more details please refer to: Printing tips for Engineering materials on WIKI.

• Bambu PAHT-CF has high thermal insulation requirements during the printing process, making it unsuitable for use with open-frame printers.

• For better print results, please refer to: Printing tips for Engineering materials on WIKI.


What's in the Box

Filament with Spool*1 & Desiccant*1

Filament Label*1



*Test Conditions

Specimen Size 150 mm (L) * 10 mm (W) * 2.5 mm (H)
Loading Weight 1.02 KG
Printing Settings All specimens were printed at a nozzle temperature of 280℃, bed temperature of 100℃, and printing speed of 100mm/s.
Filament States
•Dry specimens were annealed and dried at 80°C for 12 hours before testing.
• Wet specimens were placed under the environment conditions of 25℃, 55% RH and reached the saturated water absorption rate.

Parameters Comparison

Learn more different filaments comparison on Bambu Filament Guide >>

Price/kg $129.99 AUD $144.99 AUD
Composition PET, carbon fiber PA 12 and other long-chain PA, carbon fiber
Hotend Compatibility Hardened Steel 0.6 (recommended), 0.4, 0.8 mm
Build Plate Compatibility Engineering Plate, High Temperature Plate, Textured PEI Plate
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) 149 MPa 140 MPa
Stiffness (Bending Modulus – XY) 5080 MPa 4120 MPa
Layer Adhesion (Impact Strength – Z) 4.5 kJ/m² 13.3 kJ/m²
Heat Resistant(HDT, 0.45 MPa) 205 °C 194 °C
Saturated Water Absorption Rate / % (25 °C,55% RH) 0.37 0.89
Recommended Printing Settings
Drying Settings before Printing 80 °C, 8 – 12 h
Printing and Keeping Container’s Humidity < 20% RH (Sealed, with Desiccant)
Nozzle Temperature 260 – 290 °C
Bed Temperature (with PVP Glue) 80 – 100 °C
Printing Speed < 100 mm/s


Physical Properties
Density 1.06 g/cm³
Vicat Softening Temperature 220 °C
Heat Deflection Temperature 194 °C
Melting Temperature 225 °C
Melt Index 14.4 ± 2.0 g/10 min


Mechanical Properties
Tensile Strength 88 ± 7 MPa
Breaking Elongation Rate 10.4 ± 0.7 %
Bending Modulus 4120 ± 290 MPa
Bending Strength 140 ± 8 MPa
Impact Strength 57.5 ± 3.4 kJ/m²

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