Prusament · Space-Grade Filament
PC Space Grade Black
An ESD-safe, ultra-low-outgassing polycarbonate developed with Czech space company TRL Space — engineered to meet European Space Agency outgassing limits, yet printable on a desktop Prusa.
0.25%
Total Mass Loss (TML) · ESA limit 1%
0.00%
Collected Volatile Condensable Material (CVCM) · ESA limit 0.1%
75MPa
Tensile strength · FEM target 70 MPa
137.6°C
Heat deflection (HDT) at 0.45 MPa
The collaboration
Built for orbit, with TRL Space
Developed with TRL Space — a Brno-based company delivering turnkey space missions in cooperation with the European Space Agency — PC Space Grade Black was benchmarked against a Finite Element Method simulation of a single-unit CubeSat, and cleared every minimum mechanical target that simulation set.
It is the first Prusament for which Prusa Research has filed a patent application; the highest polymer classification — which would allow structural use such as CubeSat frames — is still pending test results.
Prototypes photographed at TRL Space facilities. Source: Prusa Research announcement, Sep 2025.
75 MPa
Tensile strength
CubeSat FEM target: 70 MPa
3.7 GPa
Tensile modulus
CubeSat FEM target: 2 GPa
18 MPa
Interlayer adhesion
CubeSat FEM target: 10 MPa
137.6 °C
HDT at 0.45 MPa
CubeSat FEM target: 100 °C
Why it matters in vacuum
Outgassing that meets ESA limits
Under vacuum, polymers release residual monomers and degradation products that can contaminate optics, throw off precise sensors, and degrade the part itself. Meeting low-outgassing limits is normally the preserve of expensive industrial materials like PEKK and PEEK — materials that need costly industrial machines. This polycarbonate does it on a desktop Prusa — verified on 3D-printed samples at an ESA-affiliated laboratory (Aerospace & Advanced Composites GmbH).
0.25%
TML — Total Mass Loss
ESA limit: ≤ 1.0%
0.00%
CVCM — Collected Volatile Condensable Material
ESA limit: < 0.1%
0.12%
RML — Recovered Mass Loss
ESA limit: ≤ 1.0%
CubeSat structure prototypes designed and 3D-printed by TRL Space.
Electrostatic dissipation
ESD-safe, straight off the bed
Carbon additives place the material squarely in the dissipative range (10⁴–10¹¹ Ω). Measured on printed samples with no post-processing — no annealing, no sanding:
2.2×10⁴
Volume resistivity
Ω·m
6×10⁷
Surface resistivity
Ω/sq
Where it goes to work
Industries & applications
From flight hardware to the ESD-sensitive bench, the same spool serves space, aerospace and defense teams.
Space
Development hardware for satellites and CubeSats — electronics housings, wire holders, deployer components and other lower-stress parts destined for the vacuum of space.
Aerospace & Defense
ESD-safe jigs, fixtures and enclosures for handling sensitive electronics, plus heat-tolerant functional parts that survive elevated temperatures without an enclosure.
Advanced engineering
Anyone working with electronics: ESD-safe device housings, custom PC cases and precision components — printed and put straight into use, no post-processing required.
Prusa is targeting the highest polymer classification — which would allow use in structural components such as CubeSat frames — but several test results are still pending. Today the material is validated for less-demanding, lower-stress space applications (housings, wire holders, deployer parts).
Traceable, end to end
The entire manufacturing process of a component is traceable from start to finish — from filament data to print telemetry.
Made in-house
Prusa Research is the only 3D-printer manufacturer producing its own filament. PC Space Grade Black is made in-house to a guaranteed diameter tolerance.
Per-spool data
Every Prusament spool ships with published manufacturing data — diameter consistency, weight, length, ovality and standard deviation — checkable by scanning the spool.
Smart, offline spools
New spools carry a rewritable NFC tag on the open OpenPrintTag standard: essential material data stored on the tag, read entirely offline — no cloud, no vendor lock-in.
The whole workflow, from one supplier
Printer, nozzle, material — validated together
No industrial system required. Nozzle 290 ±10 °C, heatbed 120 ±10 °C, a hardened nozzle (the carbon additives are abrasive) and no enclosure necessary. Models up to 200×200 mm print with little to no warping. Prusa makes the printer, the nozzle and the filament, so the machine profile and the material are tuned to one another.
01 · The machine
Original Prusa CORE One L+
Larger-format enclosed CoreXY with the headroom for bigger CubeSat structures, ESD-safe fixtures and enclosures. In the US catalog today.
Buy the CORE One L+ →+
02 · The nozzle
Original Prusa Hardened Nozzle
The carbon additives that make this polycarbonate dissipative are abrasive, so a hardened nozzle is required. Nickel plating aids heat transfer and holds up at high temperatures — rated to 300 °C, above this material’s 290 ±10 °C target.
Buy the hardened nozzle →+
03 · The material
Prusament PC Space Grade Black
ESD-safe, ultra-low-outgassing polycarbonate, made in-house to a guaranteed diameter tolerance. Not yet listed for direct purchase in the US — we scope quantity, lead time and pricing with you.
Talk to an Expert →= one validated ESD-safe, low-outgassing workflow — sourced, supported and warrantied through a single US-based team.
PC Space Grade Black also runs on the Original Prusa CORE One+ (Gen 2) and the industrial Prusa Pro HT90.
Scoping a space or ESD-safe program?
PC Space Grade Black is a premium, made-in-house material. Send us the part that’s slowing you down — our US-based team will map the right material, machines and pricing for your program. Safety data sheets, material certifications and origin documentation are available on request.