3D Printing Info

Filament comparison

PEBA vs PPA-CF

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

PEBA (polyether block amide) guidePPA-CF (carbon-fibre polyphthalamide) guide

2 selected · all documented properties

Open these two in the interactive comparisonMore PEBA comparisonsMore PPA-CF comparisons
PEBA vs PPA-CF — documented properties and sources
PropertyPEBA (polyether block amide)FLEXPPA-CF (carbon-fibre polyphthalamide)PA
Market snapshot
Listing priceUSD/kg; dated snapshots$60.99/kg median; $60.99–$60.99/kg across 1 dated product listings$84.99/kg median; $21.99–$266.67/kg across 7 dated product listings
Identity & Market
Base polymer / chemistryPolyether block amide: rigid polyamide and flexible polyether blocks.[1]Polyphthalamide — semi-aromatic nylon — with 10–15 wt% chopped carbon fibre; Bambu Lab lists the composition as semi-aromatic nylon plus carbon fibre, Raise3D and Siraya Tech state 15 wt%, Flashforge 10 %[2][3][4][5]
Densityg/cm³1.01 g/cm³ (GB/T 1033; eSUN manufacturer data)[1]1.15 (Raise3D) to 1.25 (Bambu Lab and IEMAI 3D), ISO 1183; Flashforge 1.21–1.23[2][3][4][6]
Typical priceUSD/kgNot documented1 kg-equivalent spools span 22–267; the middle of the market is about 85[7][8][9][10][11][12]
Price range across brandsUSD/kgNot documented22–267 across brands; CHCKX 22 on Amazon, IEMAI 3D 51, Siraya Tech 57 and 85, Bambu Lab 200 at 750 g, Raise3D 209, 3DXTech CarbonX HTN+CF 267 at 750 g[7][8][9][13][10][11][12]
Market availability1–5Not documentedAvailable from several mainstream brands[7][8][9][10][11]
Spool sizes & diameters1.75 mm diameter, 1 kg spool.[14]1.75 mm; 750 g, 1 kg, 2 kg and 2.5 kg spools[2][9][11]
Typical applicationsManufacturer applications include footwear, sports equipment and cushioning.[1]Under-bonnet automotive brackets, jigs and end-use parts that must stay stiff above the 100 °C working ceiling of PA6-CF[3][4]
Diameter tolerance± mmNot documented0.05 (Bambu Lab and Siraya Tech, 1.75 mm)[2][5]
Printing Parameters
Nozzle temperature°C230–260 °C; 240 °C recommended.[1]280–310 (Bambu Lab and CHCKX); 280–320 (Siraya Tech)[2][5][12]
Bed temperature°C60–90 °C[1]100–120 (Bambu Lab and CHCKX); Siraya Tech runs cooler at 70–90[2][5][12]
Enclosure / chamber requirement1–5Not documentedEnclosure required (passive) — Bambu Lab specifies a 50–80 °C chamber and Siraya Tech requires an enclosure, while Flashforge states its LUVOCOM-based grade prints on machines with no heated chamber[2][4][9]
Recommended chamber temperature°CNot documented50–80 (Bambu Lab); specimens were printed at a 52 °C chamber and Bambu Lab notes 70–80 °C raises Z properties[2]
Part cooling fan10–50% fan recommended; mechanical-test specimens used 50–100%.[1]Bambu Lab turns the part fan on; Siraya Tech runs it off[2][5]
Bed surface & adhesion aidPEI build plate[1]Smooth or textured PEI plate with a glue stick, or a PVP glue coating[2][5]
Maximum volumetric flow (mm³/s; see test conditions)mm³/s9 mm³/s maximum in eSUN spiral-vase test; mechanical specimens used 2 mm³/s. Linear recommendation 25–110 mm/s is a separate quantity.[1]8–12 mm³/s at 300–320 °C (Siraya Tech)[5]
Overall printing difficulty1–5Not documentedAdvanced — enclosure, hardware upgrades, tuning; a 320 °C hot end and a hardened nozzle are the entry requirements[2][5]
Hardware Wear & Reliability
Nozzle hardness required1–4Not documentedHardened steel required — Siraya Tech and CHCKX specify hardened steel or better, Raise3D warns brass wears quickly[3][5][12]
Abrasiveness1–5Not documentedHighly abrasive — standard CF/GF composites and glow fills[3][5]
Nozzle clog risk1–5Not documentedModerate — needs dry filament and a clean nozzle; Siraya Tech states nozzles below 0.4 mm will clog[5][9]
Moisture Behaviour
Moisture absorption (hygroscopicity)1–5Not documentedHigh (0.8–2 %) — 1.30 % saturated at 25 °C / 55 % RH for Bambu Lab and IEMAI 3D against 2.35 % for the same makers' PA6-CF, which is the whole reason to pay for PPA[2][6][15]
Equilibrium moisture content at ~50 % RH%Not documented1.30 saturated at 25 °C / 55 % RH (Bambu Lab and IEMAI 3D) against 2.35 for their PA6-CF; Siraya Tech 1.37 and 1.09 by ISO 62, Raise3D 0.6 by ISO 62 Method 1, Flashforge below 0.1 at 23 °C / 24 h[2][3][4][5][16][6][15]
Drying temperature & time70–75 °C for 6–8 h; re-dry after receiving or extended exposure.[1]100–140 °C for 8–12 h (Bambu Lab, hotter is better within that range); Siraya Tech 100 °C for 4–6 h; Raise3D 80–100 °C for 6–12 h[2][3][5]
Storage requirementNot documentedSealed below 20 % RH with desiccant (Bambu Lab); Raise3D keeps the spool in a dry box throughout the print[2][3]
Mechanical Properties
Tensile strength (XY)MPa>16.5 MPa printed XY, GB/T 1040; manufacturer lower bound, not an exact measurement.[1]95–168 (printed XY, ISO 527): Siraya Tech 95, Flashforge 108–112, Siraya Tech Core 112, Raise3D 122 conditioned and annealed, Bambu Lab and IEMAI 3D 168[2][3][4][5][16][6]
Young's modulusMPaNot documented7100–11800 (printed XY): Flashforge 7100–8000, Raise3D and Siraya Tech 7800, Siraya Tech Core 9300, Bambu Lab and IEMAI 3D 11800[2][3][4][5][16][6]
Elongation at break%>520% printed XY, GB/T 1040; manufacturer lower bound.[1]1.9–5 at break (printed XY): Raise3D 1.9, Siraya Tech 2, Siraya Tech Core 2.25, Bambu Lab and IEMAI 3D 3.2, Flashforge 3.5–5[2][3][4][5][16][6]
Flexural strengthMPaNot documented145–221 (printed XY, ISO 178): Siraya Tech 145, Siraya Tech Core 178, Raise3D 190, Bambu Lab and IEMAI 3D 208, Flashforge 210–221[2][3][4][5][16][6]
Flexural modulusMPaNot documented6500–9860 (printed XY, ISO 178): Flashforge 6500–7000, Siraya Tech 6800, Raise3D 8510, Siraya Tech Core 8700, Bambu Lab and IEMAI 3D 9860[2][3][4][5][16][6]
Charpy impact, notchedkJ/m²Not documented6.5 notched Charpy XY (Bambu Lab and IEMAI 3D, ISO 179); Raise3D 7.8 and Siraya Tech 11 by ISO 179 without stating notched[2][3][5][6]
Other impact dataNot documentedBambu Lab and IEMAI 3D unnotched Charpy 41.7 kJ/m² XY against 4.3 in Z; Flashforge Izod 9–11 kJ/m² XY against 2.5–3 in Z[2][4][6]
Layer adhesion / Z tensileMPa7.5 MPa printed Z, GB/T 1040 (manufacturer test)[1]57 printed Z (Bambu Lab and IEMAI 3D, ISO 527); Raise3D measures 30.2 by a custom mono-layer method[2][3][6]
Brittleness1–5Not documentedBrittle — snaps with little warning; 2–3 % elongation at break is typical[2][3][5]
Hardness (scale-specific)Shore A / Shore D / Rockwell90 Shore A nominal grade designation; do not compare numerically with Shore D or Rockwell.[14]Not documented
Creep resistance / sustained load1–5Not documentedGood — Flashforge cites outstanding creep resistance at high temperature and Raise3D high creep resistance, both against other nylons[3][4]
Elasticity / flexibility1–5Not documentedRigid[2]
Z strength as % of XY%Not documented34 (Bambu Lab and IEMAI 3D, Z against XY tensile, ISO 527)[2][6]
Thermal Properties
HDT at 0.45 MPa°CNot documented188–227 (ISO 75 at 0.45 MPa): Raise3D 188, Flashforge 220, Bambu Lab and IEMAI 3D 227; Siraya Tech reaches 192–199 only after annealing, 84.5–97 unannealed[2][3][4][5][16][6]
HDT at 1.8 MPa°CNot documented113–196 (ISO 75 at 1.8 MPa): Raise3D 113, Bambu Lab and IEMAI 3D 196; Siraya Tech reaches 119–126 only after annealing, 82.5–84 unannealed[2][3][5][16][6]
Glass transition (Tg)°CNot documented80 (Siraya Tech, ASTM D3418) to 85 (Bambu Lab and IEMAI 3D, DSC)[2][5][6]
Melting point / Vicat°C110 °C Vicat softening (GB/T 1633, 120 °C/h, 10 N); not HDT or a continuous-use rating.[1]Melting point 231 (Raise3D) to 258 (Bambu Lab and IEMAI 3D); Vicat softening 230–238 (ISO 306)[2][3][5][16][6]
Continuous service temperature°CNot documented120 (Flashforge, IEC 60216, LUVOCOM PPA-CF)[4]
Annealing responseNot documentedBambu Lab anneals at 120–140 °C for 6–12 h; Raise3D at 80–100 °C for 8 h and warns of up to 0.5 % Z shrinkage. On Siraya Tech's grades annealing lifts HDT at 0.45 MPa from 84.5 to 192 °C while notched Charpy falls from 11 to 6.3 kJ/m²[2][3][5]
Flammability / UL 94Not documentedFlammable; Bambu Lab lists water, carbon oxides and nitrogen oxides as combustion products. No UL 94 rating is published for the filament grades surveyed[2]
Environment & Chemical
Chemical resistanceNot documentedBetter than general nylon against weak acids, weak alkalis, most organic solvents and most oils and greases (Bambu Lab); not resistant to strong acids or strong alkalis[2]
Water / humidity resistance in service1–5Not documentedGood — minor absorption; 1.3 % saturated moisture is roughly half what PA6-CF takes up[2][15]
Electrical & ESD propertiesNot documentedFlashforge's data sheet gives a surface resistance of 10³ Ω or below (IEC 60093) for its LUVOCOM-based PPA-CF — the carbon loading makes it conductive rather than merely dissipative[4]
Health & Safety
Dust & fibre handling hazardNot documentedChopped carbon fibre; dry sanding and cutting release respirable fibre-laden dust[17]
Post-Processing
Support material pairingNot documentedBambu Lab pairs it with Support for PA/PET; Raise3D warns that PPA-CF used as its own support bonds permanently to the model once it takes up moisture, so supports must come off before annealing[2][3]
Solvents & Solubility
Soluble inNot documentedFormic acid, phenol, m-cresol and hexafluoroisopropanol dissolve the matrix at 23 °C, leaving the fibre; laboratory reagents.[18]
Softened or crazed byNot documentedZinc chloride solutions stress-crack the nylon matrix, alcoholic calcium chloride dissolves it, mineral acids attack it.[18]
Solvent welding & smoothing agentNot documentedNone — nylon's only solvents (formic acid, phenol, HFIP) degrade the part, and the fibre blocks surface flow anyway.[18]

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. eSUN PEBA-90A Technical Data Sheet v1.0 (Aug 2025), checked 2026-10-17 eSUN · 2025-08 · tds
  2. Bambu Filament Technical Data Sheet V1.0 — PPA-CF Bambu Lab · 2026-08 · tds
  3. Raise3D Industrial PPA CF Technical Data Sheet V2.0 Raise3D · 2022-04 · tds
  4. Flashforge PPA-CF Filament Technical Data Sheet (LUVOCOM PPA-CF, 10 % carbon fibre) Flashforge · 2026-08 · tds
  5. Siraya Tech Fibreheart PPA-CF Technical Data Sheet Siraya Tech · 2026-08 · tds
  6. IEMAI 3D CF-PPA Technical Data Sheet IEMAI 3D · 2025-04 · tds
  7. PPA-CF — Bambu Lab US Store Bambu Lab · 2026-08 · vendor
  8. Raise3D Industrial PPA CF Filament 1.75 mm (1 kg) — product listing MatterHackers · 2026-08 · vendor
  9. Fibreheart PPA-CF Filament — product page Siraya Tech · 2026-08 · vendor
  10. IEMAI 3D CF-PPA 3D Printing Filament — store page IEMAI 3D · 2026-08 · vendor
  11. CARBONX HTN+CF — product page 3DXTech · 2026-08 · vendor
  12. CHCKX PPA-CF 3D Printing Filament Matte Black 1 kg 1.75 mm 10 % Carbon Fiber — Amazon listing Amazon.com · 2026-08 · vendor
  13. Siraya Tech Fibreheart PPA-CF Core Filament — product page Siraya Tech · 2026-08 · vendor
  14. eSUN PEBA-90A official product page: 1 kg price and product identity eSUN · 2026-10-17 · vendor
  15. Bambu Filament Technical Data Sheet V3.0 — PA6-CF Bambu Lab · 2026-08 · tds
  16. Siraya Tech Fibreheart PPA-CF Core Technical Data Sheet Siraya Tech · 2026-08 · tds
  17. PET-CF / PPA-CF / PPS-CF / PA6-CF carbon fibre filament usage guide Bambu Lab Wiki · 2026-08 · doc
  18. Ultramid Nylon Chemical Resistance guide (unmodified PA6 B27E and PA66 A27E) BASF · 2026-08 · tds