PPS-GF20 vs PEEK: reading process guidance and limits

Two references and documents with different scopes

The 3DXTECH THERMAX PEEK page gives several conflicting values. Descriptive copy lists 360–450 °C at the nozzle, 120–160 °C at the bed and a 70–150 °C chamber; its recommendations block lists 400–480 °C, 140–180 °C and 70–140 °C. Image alt text adds 365–390 °C, 140–160 °C and drying at 65 °C for 4 h, against 120 °C for 4 h in the prose. The linked TDS gives separate specimen conditions. Ask 3DXTECH which instruction applies to your grade and profile before deciding printer compatibility.

For Fiberon PPS-GF20, Polymaker lists 310–350 °C at the nozzle and 90 °C at the bed. TDS V1.1 repeats 310–350 °C and lists an 80–90 °C bed. For THERMAX PEEK, conflicting values across product copy, recommendation block, image alt text and TDS prevent one thermal comparison. Compare documents grade by grade without turning this table into a performance ranking.

Keep in mind that these figures apply to one grade from one supplier. A different PEEK, or an unfilled PPS, may publish different ranges. The method does not change: start from the data sheet of the exact grade you intend to buy, the same way you would check print temperatures for an everyday filament.

Check your hotend's published maximum first

THERMAX PEEK TDS Rev3.0 describes FDM/FFF specimens on an open-source printer: 0.4 mm nozzle, 0.25 mm layers, 100% infill at ±45°, XY-flat specimen orientation, 380–400°C extrusion and 130–140°C bed. Infill angle and XY orientation are separate fields. This TDS supplies no chamber temperature. Those conditions do not resolve the product-page recommendation ranges or constitute a complete profile for a particular printer. Keep them as printed-specimen preparation rather than silently substituting them for a general process instruction.

The 3DXTECH page does not give one consistent envelope: descriptive copy, the recommendation block and image alt text show different nozzle and bed ranges. The linked TDS adds specimen conditions, which do not resolve commercial print recommendations. Do not automatically select the highest value or an image value; ask the manufacturer which instruction applies to the grade and process, then compare it with the printer spec.

Check the published hotend and filament-path limits for the exact printer; the product page does not confirm compatibility for any specific printer model. Do not infer full compatibility from nozzle material alone.

Bed and chamber: also read the instruction’s status

The PEEK descriptive copy calls for a fully enclosed actively heated chamber at 70–150°C. Its recommendation block uses different wording: 70–140°C recommended if possible. Preserve both the range and status differences rather than merging them into one requirement. The page also says most standard desktop machines cannot maintain the described conditions; that supplier statement does not classify every printer model on the market. The linked TDS gives no chamber setting that could settle the difference.

The THERMAX PEEK recommendations block lists a 140–180 °C bed; descriptive copy lists 120–160 °C. The page does not support turning these figures into claims about consumer printers or beds generally. Confirm which range applies with the filament maker and check the printer manufacturer’s limit.

The Polymaker page does not mention a heated chamber; the PPS-GF20 TDS lists room temperature in its recommended printing conditions. This applies to Fiberon PPS-GF20 V1.1, not all PPS. Check the exact grade and revision.

Drying and annealing: what is documented and what is not

The THERMAX PEEK page lists drying at 120 °C/4 h in prose, but its recommendation image has alt text 65 °C/4 h. These values conflict; the linked TDS does not resolve them. For PPS-GF20, TDS V1.1 lists 100 °C/10 h. Do not transfer one grade’s value to another and confirm the PEEK instruction with 3DXTECH before using a dryer or oven.

For PPS-GF20 V1.1, the PDF lists drying at 100°C for ten hours and storage/use below 20% RH. It recommends 310–350°C nozzle, 80–90°C bed, room-temperature chamber and cooling off, with speed up to 250 mm/s. These are that reference's settings. Check equipment and profile ranges without transferring the PEEK guidance, whose page drying values remain inconsistent. A maximum stated speed is not a measured duration or a guaranteed outcome for your model.

PPS-GF20 TDS V1.1 lists recommended annealing at 130°C for ten hours and declares that treatment for its specimens. It also distinguishes HDT after a 130°C anneal from another state annealed at 230°C; the note supplies no duration for the latter here and mentions deeper coloration. Do not infer ten hours at 230°C. Those results give no universal service temperature; the reviewed PEEK TDS supplies no annealing protocol. A documented specimen result is not a universal thermal acceptance criterion for a finished assembly.

Abrasive nozzle wear, purging and other process conditions

Polymaker describes PPS-GF20 as PPS with 20% glass fiber. The page warns of rapid brass wear; its PDF highly recommends a wear-resistant nozzle such as hardened steel or ruby. Record that guidance before purchasing and check the parts supported by the hotend. The availability of tungsten-carbide nozzles in a catalog proves neither the selected model's compatibility with your setup nor its suitability for this filament. No measured nozzle lifetime is established here.

The THERMAX PEEK page says “No special concerns” for nozzle specs, while an image alt text says “0.4mm diameter minimum.” Its TDS also describes specimens made with a 0.4 mm nozzle. These statements differ and do not prove compatibility of a specific nozzle or hotend. For PPS-GF20, Polymaker calls for a wear-resistant nozzle, such as hardened steel or ruby.

The PEEK page also notes that 3DXTECH's 750 g reels fit the size requirements of popular multi-material systems. That dimensional fit says nothing about whether those systems can feed a hotend at these temperatures: check the feeder system's own documentation separately.

A screening method before you order

Before deciding to buy, record product-page ranges separately from TDS test conditions. For THERMAX PEEK, do not reduce the decision to the conflicting temperature ranges; for PPS-GF20, include the drying and annealing listed in TDS V1.1. Then compare each confirmed requirement with the exact printer and dryer documentation.

3DXTECH presents PEKK, ULTEM and PPS as processing alternatives on its THERMAX PEEK page; this is the supplier’s suggestion, not an equivalence of properties or use. Compare the exact material sheet with the part requirements before substituting a grade.

To organize equipment selection, record confirmed guidance, inconsistent ranges and missing information in separate columns. The professional-printer guide and budget tool help record the actual models and costs selected. This suggested checklist validates no machine and calculates no purchase budget until the corresponding references, options and prices are supplied. Keep material requirements separate from specimen conditions so a plausible-looking overlap of temperatures is not mistaken for complete process compatibility.

Sources and limits

• 3DXTECH — THERMAX PEEK product page and differing recommendation blocks
• PPS-GF20 – Fiberon 3D Printing Filament by Polymaker
• Polymaker Fiberon — PPS-GF20 TDS V1.1, linked original PDF
• 3DXTECH — ThermaX PEEK TDS Rev3.0, linked original PDF

We organize manufacturer and community documentation; we have not measured these products ourselves. The manual for your exact model takes precedence over general guidance.