Bambu Lab Bambu Lab Black PAHT-CF Filament - 1.75mm (1kg)

Bambu Lab PAHT-CF is a black, carbon fiber-reinforced PA12 nylon filament with a 1.75mm diameter, delivering stable mechanical performance, even in wet conditions. It offers low water absorption and improved Z-layer adhesion for precise functional parts.

  • Produce dimensionally accurate parts in humid environments
  • Achieve consistent layer adhesion for durable prototypes
  • Withstand higher loads without dimensional deformation
  • Compatible with AMS systems and RFID Technology
  • Recommended use of 0.6 mm nozzles
  • Not suitable for AMS Lite or 0.2 mm nozzles
  • Hardened steel nozzle required to prevent wear
  • Best results achieved with an enclosed printer and drying filament before use
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Bambu Lab PAHT-CF Filament

Bambu Lab PAHT-CF is a high-performance formulation of nylon (PA12) and carbon fiber developed engineering applications. Combining low water absorption from PA12 with the enhanced strength from carbon fiber, this filament delivers outstanding mechanical and thermal properties that remain stable even in wet conditions. Its improved Z-layer adhesion and flexibility make it ideal for functional prototypes, machining fixtures, injection molds, jigs, and low-volume production parts.

Key Features of Bambu Lab PAHT-CF Filament:

  • Carbon fiber reinforced for enhanced stiffness and dimensional stability
  • Low water absorption inherited from PA12, maintaining precision even in humid or wet conditions
  • Enhanced Z-layer adhesion and flexibility for reliable, high-quality prints
  • Ideal for functional prototypes, machining fixtures, injection molds, jigs, and low-volume production parts
  • Compatible with RFID Technology on Bambu Lab AMS
  • Best performance an enclosed printer with a hardened steel nozzle

Moisture Resistant

Prints stay precise and strong even in wet environments, maintaining dimensional stability and mechanical performance.

  • Reduced moisture uptake for reliable printing
  • Maintains mechanical properties under high humidity
  • Ideal for precision functional parts

Enhanced Layer Strength

Improved Z-layer adhesion provides stronger bonding between layers that allow prints to withstand high stress and impact without breaking. 

  • Superior interlayer strength
  • Reduces risk of breakage under stress
  • Ensures structural integrity for complex parts

Strong and Durable

Built for demanding engineering applications, Bambu Lab PAHT-CF offers excellent mechanical strength and durability for functional prototypes and low-volume production parts.

  • Maintains structural integrity under load
  • Resists deformation under repeated stress
  • Perfect for functional prototypes and production prints

Parameters Comparison

Bambu PAHT-CF Bambu PET-CF
Composition PA 12 and other long-chain PA, carbon fiber PET, carbon fiber
Hotend Compatibility Hardened Steel 0.6 (recommended), 0.4, 0.8 mm Hardened Steel 0.6 (recommended), 0.4, 0.8 mm
Build Plate Compatibility Engineering Plate, High Temperature Plate, Textured PEI Plate Engineering Plate, High Temperature Plate, Textured PEI Plate
Glue Glue Stick Glue Stick / Liquid Glue
AMS Compatibility YES NO
Print Speed < 100 mm/s < 100 mm/s
Toughness (Impact Strength - XY) 57.5 kJ/m² 36.0 kJ/m²
Strength (Bending Strength - XY) 125 MPa 131 MPa
Stiffness (Bending Modulus - XY) 4230 MPa 5320 MPa
Layer Adhesion (Impact Strength - Z) 13.3 kJ/m² 4.5 kJ/m²
Heat Resistant(HDT, 0.45 MPa) 194  205 ℃
Saturated Water Absorption Rate / % (25 °C,55% RH) 0.88 0.37

Recommended Printing Settings

Description Value
Nozzle Temperature 260 - 290°C
Bed Temperature (with Glue) 80 - 100°C
Drying Settings before Printing 80°C, 8 - 12 hrs
Printing and Keeping Container's Humidity < 20% RH (Sealed, with Desiccant)
Printing Speed < 100 mm/s

Physical Properties

Property Value
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

Property Value
Tensile Strength 92 ± 7 MPa
Breaking Elongation Rate 8.4 ± 1.8%
Bending Modulus 4230 ± 210 MPa
Bending Strength 125 ± 7 MPa
Impact Strength 57.5 ± 3.4 kJ/m²

Printing Tips

  • Drying filament ensures consistent print quality. Find filament dryers here.
    • In a blast drying oven: 80°C for 8 - 12 hrs.
    • On an X1 printer's heatbed: 90 - 100°C for 12 hrs.
  • PAHT-CF requires high thermal insulation during printing, making it unfit for open-frame printers. An enclosed printer helps ensure strong bed adhesion and improve print quality by maintaining consistent temperatures.
  • Printing with a hardened steel nozzle is recommended to ensure long-term nozzle durability and consistent extrusion quality due to the abrasive nature of carbon fiber.
  • For models printed with supports, it is recommended to remove the support structures within 2 hours of printing to avoid sticking caused by moisture absorption. If needed, dry the model to ease removal.

What's in the Box

1 Filament with Spool & Desiccant

1 Package

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