> For the complete documentation index, see [llms.txt](https://wiki.polymaker.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://wiki.polymaker.com/polymaker-products/polymaker-filaments/prime-materials/functional-pla/ht-pla-gf.md).

# HT-PLA-GF

**Built for serious performance, Polymaker™ HT-PLA-GF** combines high-temperature stability with enhanced strength and durability. Withstands up to **150°C** without sagging or losing form - perfect for functional parts that need to endure the heat. 

**Effortless Printing, Supercharged**\
Prints beautifully with **standard PLA settings** and supports speeds up to **350mm/s**. Just load and go - no specialized tuning required.

**Reinforced with Glass Fiber**\
Tougher. Stronger. Smarter. HT-PLA-GF is **glass fiber-reinforced**, delivering higher stiffness and durability for demanding applications.

*Note: This material is abrasive - use a hardened steel or ruby nozzle for best results.*

**Anneal for ABS-Like Heat Deflection**\
Need even more thermal resilience? **Anneal at 80–100°C for 30 minutes** (we recommend 100°C) 

**9 Striking Colors**\
Available in **9 bold shades**, HT-PLA-GF brings serious strength and style to your prints.

Looking for more color options? Check out [**Polymaker HT-PLA**](/polymaker-products/polymaker-filaments/prime-materials/functional-pla/ht-pla.md) 

| Parameter               |                  |
| ----------------------- | ---------------- |
| Nozzle temperature      | 210 – 230 (℃)    |
| Build plate temperature | 25 - 60 (˚C)     |
| Cooling fan             | ON               |
| Printing speed          | up to 350 (mm/s) |
| Retraction distance     | 1 - 3 (mm)       |
| Retraction speed        | 20 - 40 (mm/s)   |
| Closure Chamber         | No               |

For higher temperature stability, you can anneal this material for 30 minutes @ 80-90°C.

<details>

<summary><strong>Can you anneal HT-PLA-GF?</strong></summary>

Yes you can anneal HT-PLA-GF for better heat stability and better HDT properties.

Please refer to the annealing guidelines for 3D-printed PLA parts.

* First, choose a suitable heating device for annealing. The best option is a temperature-uniform heating chamber, such as a forced-air drying oven. If you use a household oven, the side facing the heating elements may overheat and soften too much. To reduce this risk, wrap the part in aluminum foil. You can also use a water bath or oil bath, but avoid contact with the bottom of the container to prevent overheating and softening.
* Second, preheat the heating device to 100 °C. Once the target temperature is reached, preheating is complete.
* If space allows, keep the part attached to the printer bed and place the full assembly into the oven. Make sure the bed is at the bottom and the part faces upward.
* Annealing time depends on the thickness of the printed part:\
  Less than 4 mm: 30-60 min\
  6 mm: 1-2 hours\
  8 mm: 2-4 hours\
  10 mm: 3-6 hours
* After the required annealing time, let the part cool down in the oven before removal.\
  The annealing process is then complete.
* The expected dimensional change after annealing is 0.3-0.6%, with slight differences between the XY and Z axes.
* If space is limited and the part must be removed from the build plate, do not remove the support structures. Place the part in the oven in its original printing orientation.
* Large or thick-walled parts are more challenging to anneal. Use a programmable oven where possible. First hold the part at 60 °C until the internal temperature is uniform, then heat quickly to 100 °C, or transfer it directly to a preheated 100 °C oven to reduce the risk of permanent deformation.

More [Annealing Tips](/printing-tips/post-processing/annealing/annealing-tips.md)

</details>

<details>

<summary><strong>What is High Temperature Stability?</strong></summary>

The ability to withstand temperatures without deformation while not under a load.

</details>

<details>

<summary><strong>Is it hygroscopic?</strong></summary>

Similar hygroscopic properties to PLA.

</details>

<details>

<summary><strong>Is it UV / Weather resistance?</strong></summary>

Similar to generic PLA, no material-modification for UV/weather resistance, we need further testing.

</details>

<details>

<summary><strong>What is the shrinkage rate?</strong></summary>

Very minimal, similar to generic PLA.

</details>

<details>

<summary><strong>Is it dishwasher safe? (Food safety, water steam)</strong></summary>

This depends on the 3D print and how sturdy it is. If you have thin walls they may be subject to warping due to the harsher environment.

</details>

<details>

<summary><strong>Can it print with PLA settings?</strong></summary>

Yes! This material prints great with generic PLA settings.  You will just need a hardened nozzle

</details>

<details>

<summary><strong>Is it abrasive?</strong></summary>

Polymake&#x72;**™** HT-PLA-GF has glass fibers so you will need a hardened nozzle.

</details>

<details>

<summary><strong>Can you print with a smaller nozzle?</strong></summary>

Yes, you can use a smaller nozzle, such as 0.2mm nozzle.

</details>

<details>

<summary><strong>What is the highest speed you can print at?</strong></summary>

HT-PLA-GF can print up to 350mm/s.

</details>

<details>

<summary><strong>Do all of the color have the same heat resistance?</strong></summary>

Yes, all of the colors and variations have the same heat resistance.

</details>

<details>

<summary><strong>Is it biodegradable?</strong></summary>

The resin matrix of HT-PLA contains only a small amount of non-biodegradable components. Therefore, we consider it to be a material with good biodegradability similar to polylactic acid.

</details>

<details>

<summary><strong>What is in HT-PLA-GF?</strong></summary>

HT-PLA-GF is a kind of PLA-based multiphase composites, it's main structure is PLA materials.

</details>

<details>

<summary><strong>Is it strong?</strong></summary>

The layer adhesion is fairly low, not recommended for single wall prints.

</details>

<details>

<summary><strong>Does it has fumes when printing?</strong></summary>

Similar to standard PLA.

</details>

<details>

<summary><strong>Can I anneal HT-PLA-GF in boiling water?</strong></summary>

Yes you can, however if you have hard water with high mineral content, boiling your part can cause the minerals to form a white dust coasting on the surface.

</details>

<details>

<summary><strong>Is this PLA also based on NatureWorks?</strong></summary>

Yes

</details>

<details>

<summary><strong>Does HT-PLA have similar chemical resistance as regular PLA?</strong></summary>

Yes

</details>

<details>

<summary><strong>What percentage of glass fiber will be in the HT-PLA-GF composition?</strong></summary>

12%

</details>

<details>

<summary><strong>Could CoPE work well as a support material?</strong></summary>

Yes

</details>

<details>

<summary><strong>Do you have to remove the annealed parts out of the oven immediately or let it cool</strong><br><strong>down in the oven after annealing?</strong></summary>

No, you can remove them immediately if needed.

</details>

## [Printing Profiles](/polymaker-products/printer-profiles/legacy-profiles-by-material/pla/ht-pla-gf.md)

## Documents

[TDS](/polymaker-products/more-about-our-products/documents/technical-data-sheets/pla/ht-pla-gf.md)

[SDS](/polymaker-products/more-about-our-products/documents/safety-data-sheets.md)

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

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