3D Printing Info

Filament comparison

PEEK-CF vs PPS-CF

Compare printing settings, strength, heat resistance, dated prices and sources.

Fibre-reinforced PEEK guideFibre-reinforced PPS guide

2 selected · all documented properties

Open these two in the interactive comparisonMore PEEK-CF comparisonsMore PPS-CF comparisons
PEEK-CF vs PPS-CF — documented properties and sources
PropertyFibre-reinforced PEEKHIGHTEMPFibre-reinforced PPSHIGHTEMP
Market snapshot
Listing priceUSD/kg; dated snapshots$597.50/kg median; $448.00–$695.00/kg across 5 dated product listings$139.98/kg median; $119.98–$174.17/kg across 5 dated product listings
Identity & Market
Base polymer / chemistryShort-fibre reinforced PEEK. 3DXTech's CarbonX grade is nominally 10 wt% carbon and its FibreX grade 20 wt% glass; LEHVOSS Luvocom 3F PEEK CF 9676 is 15 wt% carbon; Ensinger's machining stock runs to 30 wt% carbon[1][2][3][4]Carbon-fibre reinforced PPS — Polymaker's Fiberon grade is nominally 10 wt%[5]
Densityg/cm³1.39 (ISO 1183)[1]1.29 (Fiberon PPS-CF10) and 1.36 (Fiberon PPS-GF20), ISO 1183[5][6]
Typical priceUSD/kg1 kg-equivalent spools span 448–972; the middle of the market is about 598[2][3][7]1 kg-equivalent spools span 93–174; the middle of the market is about 140[8][9][3][10]
Price range across brandsUSD/kg448-972 across formats and filler types; IEMAI 3D CF-PEEK and GF-PEEK 448 at 1 kg, 3DXTech CarbonX PEEK+CF10 598 at 2 kg and FibreX PEEK+GF20 695 at 1 kg, Luvocom 3F PEEK CF 9676 648 at 2 kg[2][3][7][11]93-174 across brands and formats; Polymaker Fiberon PPS-GF20 93 at 3 kg, IEMAI 3D CF-PPS 131 at 750 g, LEHVOSS Luvocom 3F PPS CF 9938 164 at 2.3 kg, Bambu Lab PPS-CF 174 at 750 g[8][9][3][10]
Market availability1–5Niche, a handful of specialist brands[2][3]Available from several mainstream brands[8][9][3]
Spool sizes & diameters1.75 and 2.85 mm; 200 g to 2 kg spools[2][3]1.75 mm; 0.5 kg spools[8]
Typical applicationsStiff aerospace and oil-and-gas parts where PEEK alone is not rigid enough[1]Chemical and automotive parts needing PPS chemistry with structural stiffness[5]
Printing Parameters
Enclosure / chamber requirement1–5Actively heated chamber required[12][13]Enclosure required (passive) — Polymaker states its Fiberon PPS-CF10 needs no heated chamber, unlike the unfilled sulfones and PAEKs[5]
Warping tendency1–5Moderate — needs adhesion aid or draught shield; the fibre cuts PEEK's crystallisation shrinkage[1]Not documented
Overall printing difficulty1–5Expert / industrial hardware only[12][13]Expert / industrial hardware only[5]
Hardware Wear & Reliability
Nozzle hardness required1–4Hardened steel required[1]Hardened steel required[5]
Abrasiveness1–5Highly abrasive — standard CF composite[1]Highly abrasive — standard CF composite[5]
Nozzle clog risk1–5High — jams from moisture, heat creep or particles; 3DXTech adds a hardened 0.4 mm minimum nozzle and 0.25 mm layers to the mandatory 120 °C pre-dry[14][15]High — jams from moisture, heat creep or particles; Polymaker specifies hardened steel or ruby nozzles for carbon-filled PPS and Prusa lists composites as a higher clogging risk[16][15]
Moisture Behaviour
Moisture absorption (hygroscopicity)1–5Not documentedLow (0.1–0.3 %) — 0.225 % equilibrium for Fiberon PPS-CF10 and 0.11 % for PPS-GF20[5][6]
Equilibrium moisture content at ~50 % RH%0.06 in 24 h on extruded CF30 stock (ASTM D570)[4]0.225 equilibrium (Fiberon PPS-CF10); 0.11 (PPS-GF20)[5][6]
Effect of moisture on strengthNo dry-versus-conditioned figures are published; 3DXTech mandates a 120 °C, 4 h pre-dry before every print because trapped water flashes to steam at these nozzle temperatures[14]No dry-versus-conditioned figures are published; equilibrium uptake is 0.225 % and Polymaker specifies a 100 °C, 10 h dry[5]
Mechanical Properties
Tensile strength (XY)MPa105 at break (printed XY, ISO 527, CF10); 121 at yield on extruded CF30 stock (ASTM D638)[1][4]59.4 ± 1.3 (PPS-CF10) and 64.1 ± 2.1 (PPS-GF20) printed XY, ISO 527[5][6]
Young's modulusMPa8100 (printed XY, ISO 527, CF10) — more than double unfilled PEEK; 6343 on extruded CF30 stock (ASTM D638)[1][4]5446.7 ± 149.0 (PPS-CF10) and 4552.0 ± 54.6 (PPS-GF20) printed XY, ISO 527[5][6]
Elongation at break%3 at break (printed XY, ISO 527), against 28 for unfilled PEEK[1][17]1.4 ± 0.1 (PPS-CF10) and 2.0 ± 0.2 (PPS-GF20) printed XY, ISO 527 — the lowest elongation in the dataset[5][6]
Flexural strengthMPa136 (printed XY, ISO 178, CF10); 193 on extruded CF30 stock (ASTM D790)[1][4]Not documented
Flexural modulusMPa8300 (printed XY, ISO 178, CF10); 7171 on extruded CF30 stock (ASTM D790)[1][4]Not documented
Charpy impact, notchedkJ/m²Not documented5.3 ± 0.2 printed XY for PPS-CF10 and 7.3 ± 0.2 for PPS-GF20, ISO 179 notched[5][6]
Other impact dataIzod notched 61.9 J/m on extruded CF30 stock, converted from 1.16 ft-lb/in (ASTM D256)[4]Not documented
Layer adhesion / Z tensileMPaNot documented32.0 ± 5.1 (PPS-CF10) and 22.9 ± 0.8 (PPS-GF20) printed Z, ISO 527[5][6]
Brittleness1–5Brittle — snaps with little warning; elongation falls from 28 % to 3 %[1][17]Very brittle — cracks or shatters easily; elongation at break 1.4 %[5]
Hardness (scale-specific)Shore A / Shore D / RockwellRockwell M107 on extruded PEEK-CF30 stock (ASTM D785), against M100 unfilled[4][18]Rockwell 105 (and R124) on extruded unfilled PPS stock (ASTM D785); no figure is published for a fibre-filled PPS filament[19]
Creep resistance / sustained load1–5Excellent — holds load for years. Ensinger rates carbon-fibre PEEK stock as very highly creep resistant and specifies 260 °C continuous service[4]Excellent — holds load for years. Ensinger lists high creep resistance for unfilled PPS stock and Spectrum states creep resistance is unchanged under continuous load at high temperature; the fibre raises heat deflection to 252 °C at 0.45 MPa[19][20][5]
Fatigue / repeated-flex resistance1–5Good. Victrex rates PEEK for long-term fatigue as well as creep; the fibre cuts elongation at break from 28 % to 3 %, which limits repeated large-strain flexing[21][1][17]Not documented
Elasticity / flexibility1–5Rigid[1]Rigid[5]
Z strength as % of XY%Not documented54 (PPS-CF10) and 36 (PPS-GF20), printed[5][6]
Thermal Properties
HDT at 0.45 MPa°C265 (printed XY, ISO 75 at 0.45 MPa, CarbonX PEEK+CF10) against 140 for unfilled PEEK[1][17]252.5 (PPS-CF10) and 236.3 (PPS-GF20), printed, ISO 75 at 0.45 MPa[5][6]
HDT at 1.8 MPa°C316 on extruded CF30 stock, converted from 600 °F at 264 psi (ASTM D648)[4]133 (PPS-CF10) and 125.8 (PPS-GF20), printed, ISO 75 at 1.8 MPa[5][6]
Glass transition (Tg)°C143 (DSC, CarbonX PEEK+CF10) — the fibre does not move the glass transition[1]97.7 (PPS-CF10) and 95.0 (PPS-GF20), DSC[5][6]
Melting point / Vicat°C334 melting on extruded CF30 stock, converted from 633 °F[4]279.7 (PPS-CF10) and 279.6 (PPS-GF20) melting, DSC; Vicat 267.5 and 272.5 (ISO 306)[5][6]
Continuous service temperature°C260 long-term on extruded CF30 stock, converted from 500 °F; 300 short term[4]170 long-term service on extruded PPS stock, converted from 338 °F; no figure published for the carbon-filled grade[19]
Thermal expansion (CTE)µm/m·K14.4 (extruded PEEK-CF30 stock, ASTM D696; source states 0.80e-5 in/in/°F) — about a third of unfilled PEEK[4][18]Not documented
Flammability / UL 94UL 94 V-0 on the base resin; Ensinger lists extruded PEEK-CF30 stock as inherently flame resistant[17][4]Not documented
Environment & Chemical
Chemical resistanceNot documentedOutstanding — PPS resists essentially all solvents below 200 °C[16]
Electrical & ESD propertiesSurface resistance above 10⁹ ohm/sq — not static-dissipative (ASTM D257)[1]Surface resistivity above 10¹² ohm — insulating (ANSI/ESD S11.11)[5][6]
Health & Safety
Fume toxicity1–5Moderate — measurable VOCs and UFPs, ventilation advised. None of these polymers was in the chamber study, and all are processed far above the temperatures it covered[22]Moderate — measurable VOCs and UFPs, ventilation advised. None of these polymers was in the chamber study, and all are processed far above the temperatures it covered[22]
Ventilation / filtration requirement1–5Ventilated room or enclosure recommended[22]Ventilated room or enclosure recommended[22]
Dust & fibre handling hazardCarbon fibre is bound in the matrix; sanding dust should not be inhaled[1]Fibre is bound in the matrix; sanding dust should not be inhaled[5]
Solvents & Solubility
Soluble in95–98 wt% sulphuric acid dissolves the matrix at 40–70 °C and leaves the fibre. Nothing else touches PEEK.[23][24]None — PPS does not dissolve in any known solvent below 200 °C.[25][24]
Softened or crazed byConcentrated nitric, hydrofluoric, hydrobromic and hydriodic acids attack it; DCM, DMSO and THF swell thin-walled sections.[26][24]Nothing at 23 °C; Ensinger rates it only conditionally resistant to benzene, dichloromethane, toluene and pyridine.[24]
Solvent welding & smoothing agentNone — no solvent softens PEEK, so parts are joined thermally or mechanically, never chemically.[26][24]None — no solvent welds or smooths PPS.[25]

Material entries describe families or representative grades, not an interchangeable specification for every spool. Test methods, orientations and conditions may differ. Unknown values are marked “Not documented”. Prices and source dates remain historical snapshots; check the linked guide for product details. Differences highlight text, not a universal winner.

Sources for this comparison

  1. CarbonX Carbon Fiber PEEK Technical Data Sheet v3 3DXTech · 2026-08 · tds
  2. 3DXTech product catalogue 3DXTech · 2026-08 · vendor
  3. 3D4Makers product catalogue 3D4Makers · 2026-08 · vendor
  4. TECAPEEK CF30 black (PEEK-CF30) — stock shape properties Ensinger · 2026-08 · tds
  5. Fiberon PPS-CF10 Technical Data Sheet V1.1 Polymaker · 2025-07 · tds
  6. Fiberon PPS-GF20 Technical Data Sheet V1.1 Polymaker · 2025-07 · tds
  7. IEMAI 3D CF-PEEK 3D Printing Filament — store page IEMAI 3D · 2026-08 · vendor
  8. Polymaker product catalogue Polymaker · 2026-08 · vendor
  9. Bambu Lab PPS-CF Black, spool (750 g) 3DJAKE · 2026-08 · vendor
  10. IEMAI 3D CF-PPS 3D Printing Filament — store page IEMAI 3D · 2026-08 · vendor
  11. IEMAI 3D GF-PEEK 3D Printing Filament — store page IEMAI 3D · 2026-08 · vendor
  12. Prusament PEI 1010 Technical Datasheet v1.0 Prusa Polymers · 2024-09 · tds
  13. Prusament PEI 1010 — material page Prusa Polymers · 2026-08 · doc
  14. CARBONX PEEK+CF10 — product page (print recommendations) 3DXTech · 2026-08 · doc
  15. Composite materials filled with carbon, kevlar or glass Prusa Knowledge Base · 2026-08 · doc
  16. PPS — material basics Polymaker Wiki · 2026-08 · doc
  17. ThermaX PEEK Technical Data Sheet v3 3DXTech · 2026-08 · tds
  18. TECAPEEK natural (PEEK) — stock shape properties Ensinger · 2026-08 · tds
  19. TECATRON natural (PPS) — stock shape properties Ensinger · 2026-08 · tds
  20. Spectrum PPS AM230 Technical Data Sheet Spectrum Filaments · 2022-04 · tds
  21. PEEK polymers — product overview Victrex · 2026-08 · doc
  22. Emissions of Ultrafine Particles and Volatile Organic Compounds from Commercially Available Desktop Three-Dimensional Printers with Multiple Filaments (Azimi et al.) Environmental Science & Technology 50(3) 1260-1268 · 2016-01 · paper
  23. The Effects of Sulfonated Poly(ether ether ketone) Ion Exchange Preparation Conditions on Membrane Properties Yee, Zhang & Ladewig, Membranes 3(3) 182–195 · 2013-07 · paper
  24. Chemical resistance — resistance of Ensinger plastics to chemicals (DIN 50 014, 23/50) Ensinger · 2026-08 · tds
  25. PPS (Polyphenylene sulfide) — Knowledge Base Prusa Research · 2026-08 · doc
  26. What solvents are not compatible with PEEK? — fluidics technical FAQ IDEX Health & Science · 2026-08 · doc