PLA CF

3D Printing in PLA CF

PLA CF (Polylactic Acid with Carbon Fiber reinforcement) is a high-stiffness composite filament designed for enhanced rigidity, improved dimensional stability, and professional surface finish. The addition of chopped carbon fiber to PLA results in a lightweight material with reduced warping, lower thermal expansion, and excellent strength-to-weight ratio.

This material is well-suited for prototypes and end-use parts that must maintain shape and dimensional precision under load, such as structural brackets, tooling components, and aesthetic engineering models. PLA CF offers a step up from standard PLA in both performance and appearance, while remaining cost-effective.

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PLA CF Summary

Use PLA CF for stiff, dimensionally stable parts with a professional carbon finish

PLA CF combines the printability of PLA with enhanced stiffness from carbon fiber reinforcement. It’s a strong, low-distortion material suitable for lightweight structural parts, covers, and models where mechanical rigidity and surface quality matter. It’s a high-performance option that bridges the gap between basic PLA and engineering polymers like PETG or ABS.

PLA CF Material Properties

PLA CF is ideal for moderately loaded applications where dimensional accuracy and stiffness are critical. The added carbon fibers reduce shrinkage and warping while increasing rigidity and tensile modulus. The surface finish is matte and professional, with minimal layer visibility—ideal for visible parts or functional prototypes.

Though not as impact-resistant as ABS or PETG, PLA CF excels in applications where high stiffness, low weight, and good aesthetics are valued. It is commonly used for inspection fixtures, mounting plates, housings, and presentation-grade concept models.

PLA CF
Tensile Strength
38 MPa
Elongation at Break
8.4%
Impact Strength
23.2 kJ/m²
Heat Deflection Temperature
55 °C
Bending Strength (X-Y)
89 MPa
Bending Strength

(Z - between layers)
49 MPa
Finish
Matte
UV Resistance
Poor
Water Resistance
Adequate
Available Colours
Relative Cost
££
£££

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