The classic gear and bearing plastic, and still all but absent from the filament market: no POM filament appears in 3DJAKE's 8228-product catalogue, igo3d's 17452, MatterHackers or Printed…
Open in interactive comparisonGears, bushings, bearings, conveyor and food-machinery parts; Apium markets its POM-C ESD grade for semiconductor insulators, aerospace fasteners and sliding parts
The classic gear and bearing plastic, and still all but absent from the filament market: no POM filament appears in 3DJAKE's 8228-product catalogue, igo3d's 17452, MatterHackers or Printed Solid, and Apium states its own machines are the only ones that print it. Property data below is from extruded POM-C stock, not from printed parts.
POM, or acetal, is widely used for gears, sliding guides, bushings and other moving mechanisms. Its stiffness, dimensional stability, resilience and inherent sliding behavior help components retain their shape while moving against another surface. Celanese markets Hostaform POM for gears; its tribologically modified SlideX compounds are listed for gear-shift mechanisms, furniture slides, roller shutters and stabilizer joints, where wear, friction and noise are central design concerns.
Grade selection matters: low-wear additives target sliding contacts, impact modifiers change toughness, and antistatic compounds change electrical behavior. POM filament and compatible printing systems are relatively scarce. A printed gear or bushing needs its own wear, fit and load assessment rather than dimensions derived from stock-shape properties alone. Acids and oxidants also restrict service even when oils or bases are compatible.
Process not specified in the application announcement · Tribologically modified Hostaform SlideX acetal copolymer; not generic POM filament · Manufacturer-listed applications
Celanese lists these moving-contact applications for the specially modified SlideX POM family because reducing friction and wear can improve operation and reduce noise.
Check the model’s material and process notes before choosing a filament.
Representative catalog values. Check the exact grade and its linked conditions before using a setting.
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—Open a topic to explore the complete data. Each value keeps its original conditions, units and dated sources.
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Base polymer / chemistry | 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 sources
|
| Density (g/cm³) | 1.41 (extruded POM-C stock) | 1 source
|
| Market availability (1–5) | 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 | 4 sources
|
| Typical applications | Gears, bushings, bearings, conveyor and food-machinery parts; Apium markets its POM-C ESD grade for semiconductor insulators, aerospace fasteners and sliding parts | 2 sources
|
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Extruder requirement | 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 | 1 source
|
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Moisture absorption (hygroscopicity) (1–5) | Low (0.1-0.3 %) — extruded POM-C stock takes up 0.18 % in 24 h and 0.80 % at saturation (ASTM D570) | 1 source
|
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Tensile strength (XY) (MPa) | 66.9 at break and 64.1 at yield (extruded POM-C stock, ASTM D638; converted from 9700 and 9300 psi) | 1 source
|
| Young's modulus (MPa) | 2275 (extruded POM-C stock, ASTM D638; converted from 330,000 psi) | 1 source
|
| Elongation at break (%) | 40 at break and 9 at yield (extruded POM-C stock, ASTM D638) | 1 source
|
| Flexural strength (MPa) | 89.6 (extruded POM-C stock, ASTM D790; converted from 13,000 psi) | 1 source
|
| Flexural modulus (MPa) | 2758 (extruded POM-C stock, ASTM D790; converted from 400,000 psi) | 1 source
|
| Other impact data | Izod 53 J/m on extruded POM-C stock, converted from 1.0 ft-lb/in | 1 source
|
| Brittleness (1–5) | Tough — absorbs impact, yields before breaking; extruded stock elongates 40 % before failing. No printed figure is published | 1 source
|
| Hardness (scale-specific) (Shore A / Shore D / Rockwell) | Rockwell 86 (and R120) — the source names only the R scale on extruded POM-C stock (ASTM D785) | 1 source
|
| Wear resistance & friction | 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 sources
|
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| HDT at 0.45 MPa (°C) | 158 (extruded POM-C stock, ASTM D648 at 66 psi; converted from 316 °F) | 1 source
|
| HDT at 1.8 MPa (°C) | 110 (extruded POM-C stock, ASTM D648 at 264 psi; converted from 230 °F) | 1 source
|
| Melting point / Vicat (°C) | 165 melting (extruded POM-C stock; converted from 329 °F) | 1 source
|
| Continuous service temperature (°C) | 91 long term and 141 intermittent (extruded POM-C stock; converted from 195 °F and 285 °F) | 1 source
|
| Thermal expansion (CTE) (µm/m·K) | 84.6 (extruded POM-C stock, ASTM D696; source states 4.7e-5 in/in/°F) | 1 source
|
| Flammability / UL 94 | UL 94 HB on extruded POM-C stock | 1 source
|
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Chemical resistance | Good chemical resistance, particularly to bases; Apium lists resistance to bases as a headline property | 2 sources
|
| Water / humidity resistance in service (1–5) | Good — minor absorption; 0.80 % water at saturation (ASTM D570, extruded stock) | 1 source
|
| Electrical & ESD properties | 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 sources
|
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Sanding & machining | Easy to machine — Ensinger lists machinability as a headline property of POM-C stock | 1 source
|
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Soluble in | Hexafluoroisopropanol dissolves it at room temperature; NMP and DMF only when hot. Laboratory reagents. | 1 source |
| Softened or crazed by | Acids, oxidants, halogens and hot concentrated zinc chloride attack it; alcohols, ketones and esters do not. | 2 sources |
| Solvent welding & smoothing agent | None — no solvent softens POM below its melting point, which is why it is bolted or heat-welded rather than glued. | 1 source |
Values describe representative grades, not every spool. Manufacturer datasheets and independent tests retain their source labels and dates. Printed orientation, test method, conditioning and formulation can change results. Unknown values are —. A listed use is not a certification. Shore A, Shore D and Rockwell hardness are separate scales.
Historical USD/kg snapshots. Read each listing’s sale/from qualifiers, spool mass, source date, shipping and tax notes. Product figures are separate from the material summary.
No specific product listings are recorded yet. The sourced material properties remain available above.
Compare specific grades and connect test results to part design.
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