Essentium PCTG


New product

29 Items

40,00 €
40,00 €

Ask for information

General use PCTG, great impact strength and chemical resistance. Suitable for biomedicine and manufacturing.

Essentium is a company with headquarters in the USA and branches in Asia and Europe. In their product portfolio they have industrial 3D printers and technical filament. They are revolutionizing the 3D printing world with their innovative solutions and ushering many companies into Industry 4.0. Essentium has helped many manufacturers to prototype and manufacture in-house, upscale their production with excellent quality but in a quick and affordable way. Essentium has numerous high-end technical filaments in their product range, mostly polymers and blends optimized for exceptional strength, flexibility and high mechanical performance in the most challenging industrial conditions. The Essentium filaments have many applications across numerous disciplines, such as aerospace and defense, automotive, biomedical, contract manufacturing, consumer goods, and electronic manufacturing.

Innovative versatile filament

The PCTG is one of Essentium’s hightech materials and it belongs to the family of general purpose materials (variety of uses). It is composed of >99 % copolyester and <1 % additives.

PCTG is an entry-level high-performance engineering polymer. To become PCTG, PET is subjected to the process of glycosylation by adding the CHDM glycol. When more than 50 % of the ethylene glycol units of PET are replaced with CHDM, PCTG is created. The extra dose of CHDM units gives PCTG its increased mechanical properties and improved chemical resistance. PCTG is a semi-crystalline copolyester but it crystallizes very slowly. This means that most parts 3D printed with a PCTG filament will be in the amorphous state at first, which will result in excellent optical clarity and toughness. The downside is that amorphous polymers usually have lower heat deflection temperature, lower tensile strength, lower elastic modulus and decreased chemical resistance.

Those properties can be changed by annealing the amorphous PCTG to cold-crystallize it, by putting the prints in an oven at above the glass transition temperature for a few hours. A piece subjected to that crystallization process will have improved thermomechanical properties due to increased crystallinity. The ability to be both amorphous and semi-crystalline depending on the thermal conditions is unique to PCTG. It makes it a highly versatile material since it allows the user to choose the processing method to obtain an amorphous or semi-crystalline state of PCTG, depending on the application the final piece is going to have. PCTG is mostly used in the biomedical industry to print medical devices such as prosthetics, as well as in manufacturing to make jigs and fixtures.

A prosthetic printed with Essentium PCTG

Image 1: A prosthetic printed with Essentium PCTG. Source: Essentium.

Improved properties

The Essentium PCTG is characterized by its excellent surface finish and clear transparency (in its natural form). It is easy to print (can be printed in open air and over a big temperature range), machine and postprocess, and it is not affected by humidity.

This filament has a similar strength and stiffness as PETG but greater impact strength and chemical resistance. The excellent impact strength of PCTG is demonstrated by the result of the Izod impact test, in which the Essentium PCTG achieved the highest mark - the no-break condition. Moreover, the impact resistance of the Essentium PCTG is bigger than that of polycarbonate, the material that bulletproof glass is made of. The Essentium PCTG also boasts great thermal and chemical resistance (by annealing).

The Essentium PCTG subjected to the Izod impact test

Image 2: The Essentium PCTG subjected to the Izod impact test. Source: Essentium.

All those qualities make the Essentium PCTG an easy-to-use, qualified, versatile and low-cost option for many applications. The manufacturer recommends it for the biomedical industry and rapid prototyping. Some example uses for the Essentium PCTG would be handheld tools, part trays, gauges, location fixtures, general assembly fixtures and check sockets for prosthetics.

Impact strength (KJ/m2) 7
Elongation at break (%) 130
Tensile strength (MPa) 44
Tensile modulus (MPa) 1810
Flexural strength (MPa) 72
Flexural modulus (MPa) 1780
Softening temperature (ºC) 76
Hide color variations (Hide color variations)

The Essentium PCTG is characterized by low moisture absorption. Nevertheless, it is crucial to keep the spool in a vacuum sealed packaging before and during printing, or in a drying cabinet or case, such as the Fiber Three drying case, available in the version F3 Safe Light or F3 Safe Long Run. It is recommended to also use the Slice Engineering filament drying capsule inside of the spool for even better results. If the material does absorb more than 600ppm moisture, it should be dried in a low dew point oven or vacuum oven at 65 – 70˚C for 4 – 8 hours. More care instructions can be found in the technical datasheet in the downloads section.

The manufacturer recommends avoiding touching filament with bare fingers or introducing oils to the filament before printing. The recommended printing surface is G-10/FR4 or glass, and the recommended bed adhesion method is to use Dimafix or Magigoo HT.

To see the exact printing parameters and manufacturer recommendations for this product, see the technical datasheet in the downloads section.

General information
Manufacturer Essentium
Material PCTG
Format Spool of 750g
Density 1.23 g/cm3
Diameter of filament 1.75 mm, 2.85 mm
Diameter tolerance -
Filament length

±253.5 m (1.75 mm, 750g)
±95.6 m (2.85 mm, 750g)

Color Natural, white, black
RAL/Pantone -
Print settings
Printing temperature 250 - 270 ºC
Print bed temperature 70 - 80 ºC
Chamber temperature -
Cooling fan 25 - 50 %
Recommended printing speed 40 - 80 mm/s
Recommended printing surface G-10/FR4 or Glass
Recommended bed adhesion method  Dimafix® or Magigoo® HT
Mechanical properties
Izod impact strength (ISO 180/A) XY 7.5 kJ/m2
45/45 5.4 kJ/m2
YX 6.1 kJ/m2
ZX 4.7 kJ/m2
Charpy impact strength -
Elongation at break (ISO 527-2) XY 130 %
45/45 2.6 %
YX 4.9 %
ZX 3.9 % 
Tensile strength (ISO 527-2) XY 44.0  MPa
45/45 40.4 MPa
YX 43.5 MPa
ZX 45.0 MPa
Tensile Modulus (ISO 527-2) XY 1810 MPa
45/45 1710 MPa
YX 1720 MPa
ZX 1860 MPa
Flexural strength (ISO 178) XY 72.7 MPa
45/45 70.1 MPa
YX 63.1 MPa
ZX 71.5 MPa
Flexural modulus (ISO 178) XY 1780 MPa
45/45 1690 MPa
YX 1570 MPa
ZX 1720 MPa
Surface hardness  -
Thermal properties
Softening temperature (ISO 75) 76 ºC
Melting temperature (ASTM D3418) 202 ºC
Glass transition temperature (ASTM D3418) 76 ºC
Specific properties
Transparency (ASTM D1003) -
Additional Information
HS Code 3916.9

* 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 recommend confirming the results and final properties with own tests. For more information you should consult the technical data sheet of the product.


30 other products in the same category: