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Carbon Fiber PET

PET CF filament is a carbon fiber-reinforced polyethylene terephthalate (PET) material designed for producing stiff, lightweight, and dimensionally stable FDM parts. By combining PET's chemical resistance and durability with chopped carbon fibers, the material delivers improved rigidity, reduced warping, and enhanced structural performance compared to standard PET or PETG. PET CF offers good layer adhesion, strong mechanical performance, and resistance to moisture and many chemicals. It is well suited for structural parts, jigs, fixtures, brackets, and lightweight mechanical components where stiffness and strength-to-weight ratio are priorities. Overall, PET CF filament is ideal for functional prototypes and end-use parts requiring increased stiffness, reduced warping, and improved dimensional stability compared to standard PET-based materials.

Print with Carbon Fiber PET

Mechanical Properties

Tensile strength60–80 MPa

Tensile modulus4500–8000 MPa

Elongation1–5 %

Flexural strength90–120 MPa

Flexural modulus5000–9000 MPa

Density1.35 g/cm³

Print Constraints

Maximum build volume

300 × 300 × 600 mm

Available finishes

Each finish can be combined with the available colors at checkout.

Standard

1 color

Standard as-printed PET CF parts feature a matte dark gray surface with visible FDM layer lines, offering high stiffness, dimensional stability, and lightweight strength for functional applications.

Sanded

1 color

Sanded PET CF parts feature a smoother matte surface with reduced layer lines while maintaining the material’s high stiffness, dimensional stability, and lightweight strength.

All materials