# Fiberon™ PPS-GF20

**Print Electrically Insulative, Flame-Retardant Parts with Fiberon™ PPS-GF20**\
Designed for engineers who demand the best in thermal resistance, dimensional stability, and dielectric insulation. This glass fiber–reinforced PPS filament is the go-to choice for high-performance applications across electronics, aerospace, and industrial environments.

**Insulation Where It Matters**\
Fiberon PPS-GF20 offers 6.05 kV/mm dielectric strength and a low dielectric constant (2.71 @ 1MHz), making it perfect for electrical housings, ADAS sensor enclosures, and structural components in 5G base stations.

Want to learn more about how the insulative properties work?  Read all about [Electrical Insulation Properties in 3D Printing Materials](../../../the-basics/fun-3d-printing-facts/electrical-insulation-properties-in-3d-printing-materials).

**Built to Withstand Extreme Heat**\
Engineered to maintain structural integrity in temperatures up to 236.3 °C (HDT @ 0.45 MPa after annealing). Whether you're building parts for high-temp enclosures, hot-air equipment, or vehicle under-hood use, this filament won’t warp under pressure.

**Glass Fiber–Reinforced for Strength**\
With 20% glass fiber reinforcement, PPS-GF20 delivers exceptional strength and stiffness—up to 4552 MPa Young’s modulus and 102 MPa bending strength in XY—ideal for brackets, antenna mounts, and chemically exposed parts.

**Flame-Retardant & Chemically Resistant**\
UL94 V0 certified at 1.5mm and resistant to acids, bases, oils, and solvents. A trusted option for mission-critical environments such as chemical labs, factory floors, and automotive housings.

**Precise, Reliable, Print-Ready**\
Supports high-speed printing (up to 250 mm/s) with minimal warping and stable Z-axis strength. Recommended for hardened steel nozzles. Available in neutral gray for reduced heat absorption and post-processing flexibility.

**AMS Compatible, Moisture & Tangle Free**\
Delivered vacuum-sealed and neatly wound, this filament is compatible with Bambu AMS systems. Low moisture absorption (0.11%， 70%RH, 23°C) ensures reliable print quality, even in humid environments.

#### Printing Recommendations

| Nozzle temperature        | 310 - 350°C   |
| ------------------------- | ------------- |
| Build plate temperature   | 80 - 90°C     |
| Environmental temperature | 25 - 80°C     |
| Fan speed                 | 0%            |
| Printing speed            | Up To 250mm/s |

## Printing Tips

This material requires a hotend that can reach 310˚C - 350˚C and a hardened nozzle due to abrasiveness.

* Print a bit slower if experiencing any layer adhesion issues.
* Keep cooling fan off.
* Anneal the print at 130˚ for 10h for the best layer adhesion and temperature resistance.
* Filament may also easily break, so it is highly recommended to have a filament path that does not have extreme bends or turns.

## FAQ

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<summary><strong>What is Fiberon™ PPS-GF20 used for?</strong></summary>

Fiberon™ PPS-GF20 is designed for high-temperature, high-performance applications that demand exceptional heat resistance, electrical insulation, and UL94 V0 flame retardant. Common use cases include electronic housings, sensor enclosures, antenna mounts, and parts exposed to harsh industrial environments.

</details>

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<summary><strong>Is PPS-GF20 electrically insulating?</strong></summary>

Yes. Unlike carbon fiber composites, PPS-GF20 is electrically insulating. It offers a dielectric strength of 6.05 kV/mm and low dielectric constants, making it suitable for moderate voltage insulation and high-frequency electronic applications.

</details>

<details>

<summary><strong>Do I need a hotend that can reach above 300˚C?</strong></summary>

Yes -we definitely recommend printing with a hotend that can reach at least 310˚C. It might be possible to print at 300˚C, but you will need to print very slowly and you run the risk of having reduced layer adhesion.

</details>

<details>

<summary><strong>What’s the difference between PPS-GF20 and PPS-CF10?</strong></summary>

PPS-GF20 replaces the conductive carbon fiber with insulating glass fiber—solving the electrical conductivity issue in PPS-CF10. It retains similar thermal and mechanical properties while being more affordable and chemically resistant.

</details>

<details>

<summary><strong>Is PPS-GF20 UL94 certified/flame retardant?</strong></summary>

Yes. It is UL94 V0 rated at 1.5 mm, making it suitable for electrical enclosures, automotive parts, and safety-critical applications requiring certified flame resistance.

</details>

<details>

<summary><strong>Is PPS-GF20 supposed to be brittle on the spool?</strong></summary>

Yes - PPS-GF is brittle on the spool and can easily be snapped. We recommend a clear filament path to the extruder with not a lot of sharp twists and turns.

</details>

<details>

<summary><strong>How heat resistant is PPS-GF20?</strong></summary>

Extremely. When annealed at 130 °C for 10 hours, the material achieves a heat deflection temperature (HDT) of over 230 °C at 0.45 MPa—ideal for high-heat industrial parts and enclosures. At 230 °C annealing, it offers even higher resistance under load (up to 219.6 °C @ 1.8 MPa).

</details>

<details>

<summary><strong>Do I need to anneal PPS-GF20 to achieve its full heat resistance?</strong></summary>

While the material performs well unannealed, annealing at 130 °C or 230 °C significantly boosts thermal performance. The 130 °C anneal is suitable for most users, while 230 °C offers maximum heat resistance for demanding environments.

</details>

<details>

<summary><strong>What printers and settings work best for PPS-GF20?</strong></summary>

PPS-GF20 prints reliably on desktop level 3D printers like the QIDI Plus4 or Bambu H2D. Recommended settings include a 310–350 °C nozzle, 80–90 °C bed, fan off, and hardened steel nozzle. For best results, use PolySupport™ for PA12 and anneal after printing.

</details>

<details>

<summary><strong>Does PPS-GF20 absorb moisture?</strong></summary>

No. The material has low moisture sensitivity, with an equilibrium water absorption rate of just 0.11%(70%RH, 23°C). This ensures consistent dimensional accuracy even in humid environments. Nevertheless, moisture adhering to the filament surface can easily cause defects on the surface of the printed part when printing at high temperatures. When using the filament, please pay attention to moisture protection. If you find that the material is damp, please dry it at 100 degrees for 10h before printing.

</details>

<details>

<summary><strong>How strong is PPS-GF20?</strong></summary>

Very strong. It offers up to 102 MPa bending strength and 64 MPa tensile strength (XY), with a Young’s modulus of over 4500 MPa. These specs make it ideal for structural parts that require stiffness and dimensional stability.

</details>

<details>

<summary><strong>What is annealing?</strong></summary>

You can find out more about annealing [HERE](#what-is-annealing).

</details>

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<summary><strong>Will the spools work in an AMS?</strong></summary>

Yes. Fiberon™ PPS-GF20 works well with Bambu AMS systems. However, due to the stiffness of glass fiber filament, performance may vary on other AMS-like devices depending on tube length and curvature.

</details>

<details>

<summary><strong>Can you make Fiberon spools in 1KG?</strong> </summary>

Unfortunately we are not offering 1KG Fiberon™ options and this has to do with the increased chance of carbon fiber and glass fiber filament snapping on the spool.

Since carbon fiber and glass fiber filament is more brittle, we spool these with a larger core. This larger core means that 1KG of filament will not fit on a 1KG spool. 3KG options of all Fiberon™ spools are available though.

</details>

## **Printing Requirements**

* High temp hotend 310˚C+
* Hardened nozzle
* Annealing post printing
* Clear filament path as this material is brittle on the spool

## [Printing Profiles](../../printer-profiles/pps/fiberon-tm-pps-gf20)

## Documents

[TDS](../../more-about-our-products/documents/technical-data-sheets/pps/fiberon-tm-pps-gf20)

[SDS](../../more-about-our-products/documents/safety-data-sheets/pps/fiberon-tm-pps-gf20)

[Other Docs](../../more-about-our-products/documents/certifications-and-declarations)

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