Prusament PEI 1010 Space Grade offers low outgassing, gamma-radiation resistance, great mechanical properties and very high thermal resistance. An ESA-certified laboratory issued an outgassing protocol for this material, confirming that it is a strong candidate for printing various components for space applications.
This material was designed for use in structural components applied directly in space. This includes very low outgassing (TML 0.50%, RML 0.27%, CVCM 0.00%) and very high resistance to long exposures of gamma radiation. For outgassing, a protocol was issued by an ESA-certified laboratory.
PEI 1010 Space Grade withstands temperatures of more than 200 °C and is resistant to most chemicals: alcohols, acids, bases, and other solvents. It can be dissolved only in uncommon chemicals, such as partially halogenated solvents.
PEI (in general) is a self-extinguishing material with a UL94 flame-retardancy rating of V0. The material extinguishes very quickly after a flame is removed and does not drop flaming particles.
The printed PEI 1010 Space Grade parts have tensile strength comparable to that of aluminum components. This means you can even directly replace certain metal parts in selected space applications. There are not many thermoplastic materials with such high resistance that can be printed with FFF 3D printers.
PEI 1010 Space Grade is perfect for space components. Used alongside our Prusa Pro HT90, it produces high-quality battery packs, mounting brackets and jig fixtures. In a battery pack, the printed PEI 1010 holder locates and secures each 18650 cell, keeping them spaced and electrically isolated, and because the material is outgassing tested with low outgassing, it won't contaminate nearby optics or electronics in vacuum. With 18650 cells common in satellite power systems, the HT90 and PEI 1010 Space Grade together give a seamless workflow from design to flight-ready part.
Prusament is a premium-grade material made by the same people who build the printers. Every spool is manufactured in-house with consistent color and high diameter precision. You can verify it yourself, down to the last meter.
Every Prusament color is formulated and locked to a documented spectroscopic recipe. We test every batch against the standard before it ships. The result: if you run out mid-project and order a second spool, the colors will match perfectly.
Our diameter tolerance is the maximum limit, not an average: when we say the diameter tolerance is ±0.04 mm, the real numbers are much lower. We continuously measure and record diameter and ovality across the full length of every spool and publish the actual data.
Every Prusament spool comes with the actual measured data from manufacturing: diameter readings along the entire length, weight, and ovality. We're the only filament manufacturer in the world that does this.
Our PLA filament is wound under controlled tension on precision machines. Every spool goes through a final inspection before shipping. The result is a spool that feeds smoothly from start to finish. Also, it looks great every time.
Prusament is manufactured in our facilities in the Czech Republic (Europe) and Delaware (United States). That means faster shipping, lower import duties where applicable, and a supply chain under our full control.
There's no third-party manufacturer who can quietly change a raw material supplier. No surprise batch failures from a factory you've never visited.
Read more in our announcement article. (opens in a new window)
Starting October 2025, all Prusament filaments ship on a redesigned spool with a fully rewritable NFC tag powered by the OpenPrintTag standard.
The OpenPrintTag attached to your Prusament spool contains essential data about the material and can be read with the Prusa mobile app. It works entirely offline, it is free to extend, and open for anyone to build upon.
Prusament PEI 1010 Space Grade was developed as a complementary material to the already existing Prusament PC Space Grade. PEI 1010 Space Grade is an electrical insulator well-suited for highly stressed structural components, while PC Space Grade is designed for direct contact with sensitive electronics, thanks to its electrostatic-dissipative properties. Both materials offer extremely low outgassing, making them suitable for space applications.
Everything you need to know before printing
