PET-CF
Carbon-Fiber PET
Engineering stiffness · Premium finish
PET reinforced with chopped carbon fiber. Stiff, dimensionally stable, and matte straight off the printer — a surface that competes directly with MJF, at FDM pricing.
FDMPET-CFBlackStructural Housing
SECTION · 01
Strengths
& uses
Where the part has to be stiff, accurate, and look finished straight off the printer.
Strengths
- Tensile modulus 5481 MPa — 3.7× the stiffness of PETG
- Holds dimension even on large parts
- Industrial matte finish, uniform straight off the printer
- Heat deflection 147.5 °C at 0.45 MPa — 105 °C under a 1.8 MPa load
Common applications
- Drone arms
- Robotics structural parts
- Camera mounts
- Performance brackets
SECTION · 02
Compare with
other FDM
materials
PET-CF measured against the FDM core lineup.
SECTION · 03
Technical
Specifications
Manufacturer datasheet values. Real-world performance will vary — see disclaimer.
Mechanical
Properties
Properties
(XY) Tensile Modulus
5481 ± 224 MPa
ISO 527, GB/T 1040
(XY) Tensile Strength
65.9 ± 1.0 MPa
ISO 527, GB/T 1040
(XY) Elongation at Break
2.4 ± 0.5 %
ISO 527, GB/T 1040
(XY) Bending Modulus
4744 ± 136 MPa
ISO 178, GB/T 9341
(XY) Bending Strength
109.3 ± 2.0 MPa
ISO 178, GB/T 9341
(XY) Charpy Impact Strength (notched)
5.1 ± 0.2 kJ/m²
ISO 179, GB/T 1043
Thermal
Properties
Properties
Glass Transition Temperature
79.3 °C
DSC 10°C/min
Melting Temperature
241.3 °C
DSC 10°C/min
Crystallization Temperature
202.9 °C
DSC 10°C/min
Decomposition Temperature
434.0 °C
TGA 20°C/min
Vicat Softening Temperature
238.4 °C
ISO 306, GB/T 1633
Heat Deflection Temperature (1.8 MPa)
105 °C
ISO 75, 1.8 MPa
Heat Deflection Temperature (0.45 MPa)
147.5 °C
ISO 75, 0.45 MPa
Chemical
Resistance
Resistance
Equilibrium Water Absorption
0.53 %
* Actual part performance varies with geometry, build orientation, layer height, infill, and post-processing. For load-bearing or safety-critical applications, contact us for part-specific validation.
Source: Polymaker Fiberon PET-CF17 datasheet (V1.0) ↓PET-CF · Carbon-Fiber PET
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