3D Printing InfoFilament comparison
PEBA vs POM
Compare printing settings, strength, heat resistance, dated prices and sources.
2 selected · all documented properties
| Property | PEBA (polyether block amide)FLEX | POM (acetal)ENGINEERING |
|---|---|---|
| Market snapshot | ||
| Listing priceUSD/kg; dated snapshots | $60.99/kg median; $60.99–$60.99/kg across 1 dated product listings | Not documented |
| Identity & Market | ||
| Base polymer / chemistry | Polyether block amide: rigid polyamide and flexible polyether blocks.[1] | Polyoxymethylene, normally the copolymer POM-C. Apium's filament grade is POM-C with antistatic additives; no unfilled POM filament was found on sale[2][3] |
| Densityg/cm³ | 1.01 g/cm³ (GB/T 1033; eSUN manufacturer data)[1] | 1.41 (extruded POM-C stock)[2] |
| Market availability1–5 | Not documented | Special order, 1-2 makers worldwide — Apium sells a POM-C ESD filament through its own shop and states its printers are the only ones able to process POM-C; no POM filament appears in the 3DJAKE or igo3d product sitemaps, at MatterHackers or at Printed Solid[3][4][5][6] |
| Spool sizes & diameters | 1.75 mm diameter, 1 kg spool.[7] | Not documented |
| Typical applications | Manufacturer applications include footwear, sports equipment and cushioning.[1] | Gears, bushings, bearings, conveyor and food-machinery parts; Apium markets its POM-C ESD grade for semiconductor insulators, aerospace fasteners and sliding parts[2][3] |
| Printing Parameters | ||
| Nozzle temperature°C | 230–260 °C; 240 °C recommended.[1] | Not documented |
| Bed temperature°C | 60–90 °C[1] | Not documented |
| Part cooling fan | 10–50% fan recommended; mechanical-test specimens used 50–100%.[1] | Not documented |
| Bed surface & adhesion aid | PEI build plate[1] | Not documented |
| Maximum volumetric flow (mm³/s; see test conditions)mm³/s | 9 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] | Not documented |
| Extruder requirement | Not documented | Apium states that the adaptive heating system on its industrial machines is what makes POM-C printable, and that no other 3D printer can process it[3] |
| Moisture Behaviour | ||
| Moisture absorption (hygroscopicity)1–5 | Not documented | Low (0.1-0.3 %) — extruded POM-C stock takes up 0.18 % in 24 h and 0.80 % at saturation (ASTM D570)[2] |
| Drying temperature & time | 70–75 °C for 6–8 h; re-dry after receiving or extended exposure.[1] | Not documented |
| Mechanical Properties | ||
| Tensile strength (XY)MPa | >16.5 MPa printed XY, GB/T 1040; manufacturer lower bound, not an exact measurement.[1] | 66.9 at break and 64.1 at yield (extruded POM-C stock, ASTM D638; converted from 9700 and 9300 psi)[2] |
| Young's modulusMPa | Not documented | 2275 (extruded POM-C stock, ASTM D638; converted from 330,000 psi)[2] |
| Elongation at break% | >520% printed XY, GB/T 1040; manufacturer lower bound.[1] | 40 at break and 9 at yield (extruded POM-C stock, ASTM D638)[2] |
| Flexural strengthMPa | Not documented | 89.6 (extruded POM-C stock, ASTM D790; converted from 13,000 psi)[2] |
| Flexural modulusMPa | Not documented | 2758 (extruded POM-C stock, ASTM D790; converted from 400,000 psi)[2] |
| Other impact data | Not documented | Izod 53 J/m on extruded POM-C stock, converted from 1.0 ft-lb/in[2] |
| Layer adhesion / Z tensileMPa | 7.5 MPa printed Z, GB/T 1040 (manufacturer test)[1] | Not documented |
| Brittleness1–5 | Not documented | Tough — absorbs impact, yields before breaking; extruded stock elongates 40 % before failing. No printed figure is published[2] |
| Hardness (scale-specific)Shore A / Shore D / Rockwell | 90 Shore A nominal grade designation; do not compare numerically with Shore D or Rockwell.[7] | Rockwell 86 (and R120) — the source names only the R scale on extruded POM-C stock (ASTM D785)[2] |
| Wear resistance & friction | Not documented | Wear factor 65e-10 in3*min/(ft*lb*h) and a dynamic coefficient of friction of 0.21 at 40 psi and 50 fpm (ASTM D3702, extruded stock) — the properties that make acetal the default gear and bushing plastic; Apium lists good sliding properties as the reason for its grade[2][3] |
| Thermal Properties | ||
| HDT at 0.45 MPa°C | Not documented | 158 (extruded POM-C stock, ASTM D648 at 66 psi; converted from 316 °F)[2] |
| HDT at 1.8 MPa°C | Not documented | 110 (extruded POM-C stock, ASTM D648 at 264 psi; converted from 230 °F)[2] |
| Melting point / Vicat°C | 110 °C Vicat softening (GB/T 1633, 120 °C/h, 10 N); not HDT or a continuous-use rating.[1] | 165 melting (extruded POM-C stock; converted from 329 °F)[2] |
| Continuous service temperature°C | Not documented | 91 long term and 141 intermittent (extruded POM-C stock; converted from 195 °F and 285 °F)[2] |
| Thermal expansion (CTE)µm/m·K | Not documented | 84.6 (extruded POM-C stock, ASTM D696; source states 4.7e-5 in/in/°F)[2] |
| Flammability / UL 94 | Not documented | UL 94 HB on extruded POM-C stock[2] |
| Environment & Chemical | ||
| Chemical resistance | Not documented | Good chemical resistance, particularly to bases; Apium lists resistance to bases as a headline property[2][3] |
| Water / humidity resistance in service1–5 | Not documented | Good — minor absorption; 0.80 % water at saturation (ASTM D570, extruded stock)[2] |
| Electrical & ESD properties | Not documented | Volume resistance 1e14 ohm-cm, dielectric strength 500 V/mil and dielectric constant 3.7 at 60 Hz on extruded stock (ASTM D257, D149, D150); Apium's filament grade adds antistatic agents[2][3] |
| Post-Processing | ||
| Sanding & machining | Not documented | Easy to machine — Ensinger lists machinability as a headline property of POM-C stock[2] |
| Solvents & Solubility | ||
| Soluble in | Not documented | Hexafluoroisopropanol dissolves it at room temperature; NMP and DMF only when hot. Laboratory reagents.[8] |
| Softened or crazed by | Not documented | Acids, oxidants, halogens and hot concentrated zinc chloride attack it; alcohols, ketones and esters do not.[8][9] |
| Solvent welding & smoothing agent | Not documented | None — no solvent softens POM below its melting point, which is why it is bolted or heat-welded rather than glued.[8] |
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
- eSUN PEBA-90A Technical Data Sheet v1.0 (Aug 2025), checked 2026-10-17 eSUN · 2025-08 · tds
- TECAFORM AH natural (POM-C) — stock shape properties Ensinger · 2026-08 · tds
- POM-C ESD 3D printing — material page Apium 3D Technologies · 2026-08 · doc
- 3DJAKE product catalogue 3DJAKE · 2026-08 · vendor
- igo3d product sitemap (17452 product URLs) igo3d · 2026-08 · vendor
- Printed Solid product catalogue Printed Solid · 2026-08 · vendor
- eSUN PEBA-90A official product page: 1 kg price and product identity eSUN · 2026-10-17 · vendor
- Resistance of Ultramid, Ultraform and Ultradur to chemicals (TI-KTU/AS-28 e) BASF · 2000-10 · tds
- Chemical resistance — resistance of Ensinger plastics to chemicals (DIN 50 014, 23/50) Ensinger · 2026-08 · tds