If you need 3D-printed parts that survive engine bays, chemical baths, or electrical enclosures rated for fire safety, standard PLA or PETG simply won't cut it. This is where Polymaker Fiberon PPS-CF10 comes in — a carbon-fiber-reinforced Polyphenylene Sulfide (PPS) filament built for professionals who need metal-like stiffness, extreme heat resistance, and long-term chemical durability from a desktop or industrial FDM printer.
At Woj.Tech Solutions, we work with advanced engineering filaments like PPS-CF10 for functional prototypes, tooling, and end-use industrial parts. In this guide, we break down everything currently known about this material: its composition, mechanical properties, correct printing parameters, and where it genuinely makes sense to use it.
What Is Polymaker PPS-CF10?
Fiberon™ PPS-CF10 is a Polyphenylene Sulfide (PPS) filament reinforced with 10% chopped carbon fiber, part of Polymaker's Fiberon engineering material line. PPS on its own is a high-performance thermoplastic known for exceptional heat and chemical resistance; adding carbon fiber further boosts stiffness, dimensional stability, and reduces warping — all while keeping the material printable without a fully enclosed, heated-chamber printer.
Unlike many high-temperature composites, Polymaker designed PPS-CF10 to be printable on open-bed, high-temperature-capable desktop printers, not just industrial machines — provided the hotend and nozzle can handle the demands described below.
Key Properties at a Glance
| Property | Typical Value | Test Standard |
|---|---|---|
| Density | 1.29 g/cm³ | ISO 1183 |
| Heat Deflection Temp. (0.45 MPa) | ~252.5 °C | ISO 75 |
| Heat Deflection Temp. (1.8 MPa) | ~133 °C | ISO 75 |
| Vicat Softening Temperature | ~267.5 °C | — |
| Tensile Strength (X-Y) | ~59.4 MPa | ISO 527 |
| Tensile Strength (Z) | ~32.0 MPa | ISO 527 |
| Young's Modulus (Z) | ~2790 MPa | ISO 527 |
| Flexural Strength (X-Y) | ~94.3 MPa | ISO 178 |
| Flexural Modulus (X-Y) | ~4647 MPa | ISO 178 |
| Charpy Impact, notched (X-Y) | ~5.3 kJ/m² | ISO 179 |
| Elongation at Break (Z) | ~1.6% | ISO 527 |
| Moisture Absorption (23°C/70% RH) | ~0.225% | — |
| Flame Behavior | Formulated to V0-level performance (UL94 criteria, per Polymaker's internal test report) | — |
These figures come from printed and, where noted, annealed test specimens — actual part performance depends on geometry, print orientation, and post-processing.
Two things stand out immediately: the HDT of over 250 °C — well beyond what PETG, ABS, or even most nylons can offer — and the pronounced anisotropy between the X-Y and Z tensile strength, which is typical for fiber-reinforced FDM materials and something to account for in part orientation.
Note on flame retardancy: Polymaker has not pursued formal UL94 certification for PPS-CF10 at this time, but publishes an internal test report showing the material meeting V0-level criteria on printed specimens. If your application requires certified flame ratings, request the documentation and verify against your compliance needs.
Recommended Print Settings
PPS-CF10 is not a beginner material — it demands a printer capable of sustained high temperatures and abrasion-resistant hardware.
| Parameter | Recommended Setting |
|---|---|
| Nozzle Temperature | 310–350 °C |
| Nozzle Type | Hardened steel or ruby (standard brass wears out quickly) |
| Build Plate Temperature | 80–90 °C |
| Chamber / Ambient Temperature | 25–80 °C (heated chamber not required) |
| Cooling Fan | 0% (off) |
| Print Speed | 30–300 mm/s (slower helps with layer adhesion) |
| Filament Path | Short and straight — avoid tight bends, PTFE tube loops, or AMS-style routing |
| Drying | 100 °C for 10 hours before printing |
| Storage Humidity | Below 20% RH |
Why the Filament Path Matters
PPS-CF10 is notably brittle on the spool before it's melted. Sharp turns in the filament path — including tight PTFE tubing bends or multi-tool AMS systems — can snap the strand mid-print. Polymaker explicitly recommends a direct, minimally curved path from spool to hotend, and generally advises against routing it through AMS-type multi-material units.
Annealing for Full Performance
To reach the published heat-resistance figures (HDT ~252.5 °C), parts should be annealed at 125 °C for 16 hours after printing. The material does print with usable properties straight off the plate, but annealing is what unlocks the full thermal performance the material is known for — essential if the part will see sustained heat in service.
Why Choose PPS-CF10 Over Other Engineering Filaments?
- Vs. ABS/ASA: Dramatically higher heat resistance and chemical resistance; ABS starts to soften well below 100 °C, while PPS-CF10 holds shape past 250 °C.
- Vs. Nylon-CF (PA-CF): PPS-CF10 offers superior chemical resistance to fuels, acids, and solvents, plus lower moisture sensitivity — nylons are notoriously hygroscopic and need constant drying.
- Vs. PEEK: PPS-CF10 approaches PEEK-like stiffness and heat performance at a fraction of the cost and without requiring a fully enclosed, high-temperature industrial printer — though PEEK still leads in extreme continuous-use temperature and chemical range.
- Vs. PPS-GF20 (glass fiber variant): PPS-CF10 trades some of the GF20's raw HDT ceiling for lower density, higher stiffness-to-weight, and better electrical/thermal conductivity properties typical of carbon fiber.
Real-World Applications
Given its heat resistance, chemical durability, and flame behavior, PPS-CF10 is a strong fit for:
- Automotive: under-hood brackets, sensor housings, jigs and fixtures near engine heat
- Aerospace: lightweight structural components and low-flammability interior parts
- Electronics: connector housings, insulating brackets, and enclosures near heat-generating components
- Industrial tooling: jigs, fixtures, and molds exposed to solvents or elevated temperatures
- Chemical-processing equipment: components exposed to acids, alkalis, and fuels
Things to Know Before You Print
- You need real hardware. A hotend that tops out at 260–280 °C won't cut it — you need genuine 310 °C+ capability and a hardened nozzle.
- It's not cheap. Engineering-grade PPS-CF filaments sit at the premium end of the market — plan your prints and settings carefully to avoid wasted material.
- 1 kg spools are rare. Because the filament is brittle, Polymaker mainly offers PPS-CF10 in 500 g and 3 kg spool formats rather than the usual 1 kg.
- Support material: Polymaker recommends PolySupport™ (PA12-based) for multi-material setups requiring support structures.
Final Thoughts
Polymaker Fiberon PPS-CF10 sits in a rare sweet spot: near-PEEK thermal and chemical performance, printable on high-temperature desktop machines, without requiring a fully enclosed industrial chamber system. It's not a filament for casual prints — it demands the right hardware, careful drying, and a proper annealing step — but for functional, heat- and chemical-resistant industrial parts, it's one of the most capable materials currently available on the FDM market.
Need a part printed in PPS-CF10 or another engineering-grade material? Woj.Tech Solutions offers 3D printing services alongside full-stack development and IoT hardware work — get in touch to discuss your project's requirements, from material selection to post-processing.
Sources: Polymaker Fiberon PPS-CF10 Technical Data Sheet and official Polymaker Wiki product documentation. Values are typical figures from printed/annealed test specimens; actual performance depends on print settings, geometry, and post-processing.