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PEI (Ultem)

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Relevant for:
HT90
Last updated 5 months ago
This article is also available in following languages: 
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Basic info

Ultem, also known as PEI (Polyetherimide), is a high-performance thermoplastic material ideal for 3D printing. Its extreme resistance to heat and chemicals makes it an excellent choice for demanding applications. With a temperature range from -70°C to over 200°C, Ultem offers high stability and strength across a wide range of environments. While it requires stable printing conditions and specialized equipment, the results are precise and durable. Ultem is particularly suitable for the automotive, aerospace, medical device industries, and prototyping, handling the challenges of even the most demanding environments.

Recommended nozzle temperature: 370 - 420 °C
 
Recommended bed temperature: 150 - 155 °C
 
Recommended chamber temperature: 85 - 90 °C
 
Recommended drying temperature: 130 - 150 °C (ensure the filament spool can withstand these temperatures)

For precise temperature settings, please follow the manufacturer's guidelines.
 

Description

PEI 9085 and PEI 1010

Pros

Cons

✔ High-temperature resistance (over 200°C)

✖ Higher cost

✔ Exceptional chemical resistance

✖ Susceptible to warping

✔ Radiation resistance

✖ Square objects are prone to warping.

✔ Suitable as an insulating material

✖ Highly hygroscopic (absorbs moisture) – requires
drying and use of a dry box for storage and during printing.

✔ Self-extinguishing

✖ Requires adhesives for better adhesion to the print
bed

✔ Dimensional stability during printing

✖ Support removal can be difficult

 

Tips for successful printing

Clean and calibrate the printer.
Use a drybox to keep the filament dry.

Speed: Slower than usual.
Adhesion: 2-3 layers of Magigoo HT and use a brim.

Use a brim to enhance first layer adhesion.

Monitor the print closely.
Remove print quickly to avoid stress.
Remove supports while warm.

 

Sample prints

 

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