Bambu Lab PAHT-CF Black
Bambu PAHT-CF is a composite material of PA12 and carbon fiber. Bambu PAHT-CF inherits the advantages of low moisture absorption from PA12 and high-performance carbon fiber, possessing excellent mechanical and thermal properties. It maintains excellent performance even when printed objects are humid. Furthermore, its superior Z-axis interlayer adhesion and flexibility make it ideal for engineering part production such as functional prototypes, processing jigs, injection molds, jigs, and small-batch production parts.
👉Click here for [3D Printing Knowledge] Carbon Fiber Printing Material Beginner's Guide: PLA-CF, PAHT-CF, PET-CF, PETG-CF Thorough Comparison
Low Water Absorption
Compared to general PA-CF, water absorption is reduced by 50%.
Bambu PAHT-CF maintains excellent mechanical performance and dimensional stability even in high-humidity environments.
Deformation from Dry to Wet State
Mechanical Performance Comparison
| Typical PA-CF | PAHT-CF | |
| Saturated Water Absorption /% (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 |
| Reduction Rate of Mechanical Properties after Water Absorption /% | 40%-45% | 12%-18% |
*Both PA-CF and PAHT-CF need to be dried at 80 °C for 12 hours before printing.
Excellent Z-axis Adhesion
Compared to general PA-CF, Bambu PAHT-CF exhibits higher adhesion in the Z-layer direction.
This makes it less prone to damage or deformation even under high impact and stress.
PA-CF vs. PAHT-CF Z-Layer Performance Comparison
| Typical PA-CF | PAHT-CF | Improvement Rate | |
| Flexural Strength - Z/MPa | 48 | 61 | 27% |
| Flexural Modulus - Z/MPa | 1470 | 1820 | 24% |
| Impact Strength - Z/(K0/m²) | 5.7 | 13.3 | 133% |
*Both PA-CF and PAHT-CF need to be dried for 12 hours at 80 °C before printing.
High Tensile Strength
Bambu PAHT-CF is engineered to meet the requirements of diverse industrial fields,
making it suitable for engineering applications where high strength and durability are critical.
High Temperature Resistance
With a heat deflection temperature of 194°C (0.45MPa)*, Bambu PAHT-CF is suitable for printing parts exposed to high-temperature environments, minimizing deformation and loss of mechanical properties.
*Long-term heat resistance relates to the model itself and its use conditions.
Reusable Spool
Bambu PAHT-CF uses a heat-resistant spool that is less prone to deformation during drying. Carrying on the philosophy of reducing plastic waste, this spool is reusable with other Bambu refills.
Accessory Compatibility
| Recommended | Not Recommended | |
| Build Plate | High-Temperature Plate, Engineering Plate | Cool Plate |
| Nozzle | Hardened Steel Hotend (0.6mm, 0.4mm, 0.8mm)* | Stainless Steel Hotend (all sizes) Hardened Steel Hotend (0.2mm) |
| Adhesive | Glue Stick | Liquid Adhesive |
*Larger nozzle diameters reduce the chances of clogging but also reduce printing quality. Therefore, using 0.6mm Hardened Steel Nozzle is recommended to avoid clogging while maintaining optimal print quality.
RFID for Smart Printing
All printing parameters are embedded in the RFID, which can be read by the AMS (Automatic Material System).
Load and print without hassle.
Parameter Comparison
For comparison between different filaments, please refer to Bambu Filament Guide >>
| PET-CF | PAHT-CF | |
| Composition | PET, Carbon Fiber | PA 12 and Long Chain PA, Carbon Fiber |
| Nozzle Compatibility | Hardened Steel 0.6 (Recommended), 0.4, 0.8 mm | |
| Build Plate Compatibility | Engineering Plate, High-Temperature Plate, Textured PEI Plate | |
| Adhesive | Glue Stick/Liquid Adhesive | 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 (Flexural Strength - XY) | 131 MPa | 125 MPa |
| Stiffness (Flexural Modulus - XY) | 5320 MPa | 4230 MPa |
| Layer Adhesion (Impact Strength - Z) | 4.5 kJ/m² | 13.3 kJ/m² |
| Heat Resistance (HDT, 0.45 MPa) | 205°C | 194°C |
| Saturated Water Absorption / % (25 °C, 55% RH) | 0.37 | 0.88 |
Printing Tips
• Drying conditions: 80℃ for 8 hours. PAHT-CF is very sensitive to moisture. Additional drying is recommended before use and after storage for optimal printing performance. For more details, please refer to our Filament Drying Guide on WIKI.
• Bambu PAHT-CF is not suitable for open-frame printers because of its high heat insulation requirements during printing.
What's in the Box
Spool & Filament*1 & Desiccant*1
Filament label*1
Package*1
| diameter | 1.75 mm |
| Net weight of wire | 500 g |
| spool material | PC+ABS (temperature resistant to 90°C ) |
| spool size | Diameter : 200 mm; Height: 67 mm |
| Pre- print drying settings | 80 °C, 8-12 hours X1 Series Printers Heated Bed: 90 - 100 °C, 12 h |
| Printing and storing humidity | < 20% RH (sealed with desiccant) |
| Nozzle temperature | 260 - 290 ̊C |
| Printing plate type | Engineering printing plates, high-temperature plates, or textured PEI plates |
| Printing plate preparation | 80 - 100 ̊C |
| Cooling fan | 0-60% |
| Printing speed | < 100 mm /s |
| Retraction length | 0.8 - 1.4 mm |
| Retraction speed | 20 - 40 mm /s |
| Internal temperature | 45 - 60 ̊C |
| Maximum overhang angle | ~70 ̊C |
| Maximum bridging length | ~40 mm |
| Supporting materials | Supports PA/PET |
physical properties
| density | 1.09 g/cm³ |
| Vicat softening temperature | 223 ̊C |
| Heat distortion temperature | 186 ̊C |
| melting temperature | 223 ̊C |
| Melt Flow Index | 6.8 ± 0.6 g/10 min |
Mechanical properties
| Tensile strength | 102 ± 7 MPa |
| Elongation at break | 5.8 ± 1.6% |
| Flexural modulus | 5460 ± 280 MPa |
| Bending strength | 151 ± 8 MPa |
| Impact strength | 40.3 ± 2.5 kJ/ m² |