ePET-CF
eSUN PET-CF is a high-performance 3D printing filament that combines the durability of PET with the structural reinforcement of chopped carbon fibers. Designed for demanding industrial applications, this filament delivers exceptional rigidity, dimensional stability, and wear resistance — making it an ideal material for functional parts and prototypes.
Product Features
Features
- Ultra-Low Moisture Absorption
- Good Chemical Resistance
- Excellent Printability
- High Heat Resistance
- Dimensional Stability
Shipping Weight
- 1.400 Kg
Description
eSUN PET-CF Black – Carbon Fiber Reinforced PET Filament
Built for Strength. Engineered for Precision.
eSUN PET-CF is an industrial-grade, carbon fiber-reinforced PET filament developed to meet the growing demand for functional, high-performance 3D printed parts. By combining the chemical resistance and durability of polyethylene terephthalate (PET) with the structural reinforcement of chopped carbon fibers, this filament offers a powerful balance of strength, stiffness, and stability.
Designed for engineers, product developers, and manufacturers, eSUN PET-CF excels in environments where mechanical performance and dimensional accuracy are critical. Its enhanced rigidity and wear resistance make it particularly well-suited for producing functional prototypes, end-use parts, and tooling components that must endure repeated stress or long-term load.
What sets PET-CF apart from other engineering filaments is its ultra-low moisture absorption, which ensures stable material properties even in humid or water-prone environments. This makes it a strong candidate for outdoor applications and mechanical systems that face environmental exposure. Additionally, PET-CF exhibits excellent chemical resistance, giving it the resilience needed for demanding industrial settings, including those involving acids, bases, or organic solvents.
Despite its advanced properties, PET-CF is highly printable. The inclusion of carbon fibers helps minimize warping and improves layer adhesion during the printing process. It does not require a heated chamber and performs well with a heated bed set at 70–80°C, making it compatible with many professional desktop 3D printers.
Whether you are developing automotive components, functional jigs and fixtures, or high-strength structural parts, eSUN PET-CF delivers the mechanical performance and reliability needed to take your 3D printing to an industrial level.
Key Features
Reinforced Strength and Stiffness
eSUN PET-CF is engineered with chopped carbon fibers embedded in a PET matrix, significantly increasing the material's rigidity and mechanical strength. This results in a superior strength-to-weight ratio, making it ideal for applications where structural performance is critical.
Ultra-Low Moisture Absorption
Unlike many engineering filaments, PET-CF exhibits exceptionally low moisture absorption. This ensures consistent mechanical and dimensional performance even in humid environments or when exposed to water over time. It is particularly well-suited for outdoor use or applications with variable environmental conditions.
Superior Chemical Resistance
PET-CF retains the inherent chemical resistance properties of PET, providing strong resistance against acids, alkalis, and most organic solvents. This makes it a reliable choice for use in electronics, industrial equipment, and other chemically exposed applications.
High Heat Resistance
PET-CF offers excellent thermal stability and maintains its performance at elevated temperatures. When subjected to post-print annealing, the material’s temperature resistance can be further enhanced, making it suitable for high-temperature applications such as tooling, jigs, and engine-related components.
Excellent Printability
The inclusion of carbon fibers not only strengthens the material but also helps to minimize warping during printing. PET-CF can be printed without the need for a heated chamber and only requires a heated print bed set between 70–80°C. Its consistent flow and layer adhesion make it user-friendly for experienced makers and professionals alike.
Dimensional Stability
PET-CF demonstrates low creep and high modulus, which ensures parts retain their shape and mechanical integrity under long-term stress. Compared to nylon-based carbon fiber filaments, PET-CF offers greater stability and less deformation over time.
Specification
Parameter Information

