Essentium PET-CF View larger

Essentium PET-CF


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75,00 €
75,00 €

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Strong, stiff and light CF-reinforced PET. Excellent heat, solvent, warping and moisture resistance.

Essentium is a manufacturer of industrial 3D printers and filament. They have headquarters in Europe, Asia and in the USA. Their products are revolutionizing the 3D printing market and ushering it into Industry 4.0.

The solutions offered by Essentium have made it easier for many companies to prototype and manufacture reliable large scale products in-house, in a quick and cost-effective fashion. Essentium’s material catalogue contains many specialistic and innovative filaments, mostly polymers and blends designed to provide strength, flexibility and high mechanical performance in the most demanding industrial circumstances. The Essentium filaments have multiple applications across numerous disciplines, such as the automotive, electronics, aerospace and defense, biomedical, contract manufacturing, and consumer goods industries. Essentium currently has over 150 pending patents.

Essentium has several reinforced filaments in its catalogue, such as the PET CF, composed of a PET base reinforced with 15 % of chopped carbon fiber.

PET (Polyethylene terephthalate) belongs to the copolyesters family, itself being a semi crystalline thermoplastic polyester. Copolyesters are characterized by great tolerance to high tensile stresses, exceptional durability and chemical resistance, and excellent inter-layer adhesion. PET has its origins in 1941, when it was invented and patented as an equivalent to cotton fibres in the textile industry. In the following decades, PET took the world by storm with many new applications, for example in food packaging, plastic film, or rigid water, fizzy drink and beer bottles. Nowadays it is mostly used in the manufacturing of beverage and condiment bottles. PET is lightweight, resistant to alcohols, oils and acids, and a good barrier for moisture and bacteria.

Filaments with specialistic applications are frequently enriched with the addition of carbon fibres or glass fibres to condition the filament for the application it is going to have. Adding carbon fibre (CF) makes the prints more rigid, stiff, more dimensionally stable, and lighter (which makes an ideal substitute for metal parts). Those features make plastic reinforced with CF perfect for the automotive industry (high tensile strength and modulus, and high temperature tolerance) and the aerospace industry (weight reduced up to 50 % with preserved functionality).

Essentium’s multilayer technology used in their carbon enriched filaments

Image 1: Essentium’s multilayer technology used in their carbon enriched filaments. Source: Essentium.

Advanced features

PET CF is a filament made by Essentium, and based on Lehvoss Group’s Luvocom 3F resin. Essentium’s PET CF is composed of > 80 % of PET and 15 % chopped carbon fiber, which makes it stiff, strong, resistant to common solvents and to heat when annealed to > 155 ºC. Moreover, this PET CF filament is characterized by low warping and very low moisture absorption, which makes it easy to print and reduces the potential complications during the printing process that tend to occur with some other plastics.

Pieces printed with the Essentium PET CFPieces printed with the Essentium PET CF
Image 2: Pieces printed with the Essentium PET CF. Source: Essentium.

The properties of the PET CF make it perfect for the manufacturing of jigs, fixtures and tooling, functional prototypes, component housings, brackets and automotive parts. The manufacturer recommends this filament for the 3D printing of consumer products and tools, and in contract manufacturing.

Impact strength (KJ/m2) 5
Tensile strength (MPa) 70
Tensile modulus (MPa) 9380
Flexural strength (MPa) 131
Flexural modulus (MPa) 8060
Softening temperature (ºC) 155
Fiber reinforced Fiber reinforced
Chemical resistance Chemical resistance
Hide color variations (Hide color variations)

Filaments reinforced with carbon fibre tend to wear down the nozzle more than basic filaments. That is why the use of wear-resistant nozzles (of at least 0.25 mm in diameter) is highly recommended to avoid nozzle degradation and the deterioration of printing quality. Some great options are hardened steel nozzles, the Olsson Ruby Nozzle, the Vanadium nozzle or the Tungsten carbide nozzle.

This PET CF is only slightly hygroscopic but it should still be preserved in proper conditions to ensure optimal performance and avoid problems in the printing process. The manufacturer recommends storing this filament in a vacuum sealed packaging until needed. Another way of keeping filament dry are drying boxes, such as the Fiber Three drying cases available in the F3 Safe Light and F3 Safe Long Run versions. If the filament absorbs moisture anyway (more than 50 ppm), it should be dried in an oven. The detailed care instructions can be found in the technical datasheet in the downloads section.

General information
Manufacturer Essentium
Material PET-CF
Format 750 g Coil
Density 1.4 g/cm3
Filament diameter 1.75 or 2.85 mm
Diameter tolerance -
Filament length ±222,7 m (Ø 1.75 mm - 0.75 kg)
±84,0 m (Ø 2.85 mm - 0.75 kg)
Color Black
RAL/Pantone  -
Print properties
Printing temperature 265 - 285 ºC
Base / bed temperature 60 - 80 ºC
Chamber temperature -
Layer fan 0 - 25 %
Print speed 20 - 80 mm/s
Raft Separation -
Retraction -
Maximum cantilever manufacturing angle -
Recommended support material
Mechanical properties
Izod impact resistance (ISO 180/A) XY 5.6 kJ/m2
45/45 2.9 kJ/m2
YX 2.0 kJ/m2 
ZX 1.9 kJ/m2
Charpy impact resistance Charpy (ASTM D256) -
Elongation at break (ASTM D638) -
Tensile Strength (ISO 527-2) XY 70.7 MPa
45/45 49.7 MPa
YX 17.7 MPa
ZX 41.1 MPa
Traction module (ISO 527-2) XY 9380 MPa
45/45 4560 MPa
YX 3250 MPa
ZX 2990 MPa
Flexural Strength (ISO 178) XY 131 MPa
45/45 81.2 MPa
YX 53.3 MPa
ZX 96.3 MPa
Flexural modulus (ISO 178) XY 8060 MPa
45/45 3800 MPa
YX 3480 MPa
ZX 2890 MPa
Surface hardness -
Thermal properties
Softening temperature 155 ºC
Melting temperature 248 ºC
Specific properties
Transparency Opaque
Additional Information
HS Code 3916.9
Reel diameter (outer) -
Reel diameter (inner hole) -
Reel width -

* The typical values detailed in this table should be considered as a reference. Actual values may vary depending on the 3D printer model used, part design and printing conditions. We advise to confirm the final results and properties with our own tests. For more information you should consult the product data sheet.


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