POM-C ESD
also Ultraform N2320 EC
POM-C ESD is an acetal copolymer made static-dissipative with carbon black, carbon fibre or antistatic additives, for example Ultraform N2320 EC, and is stocked as ESD-CB, ESD-SD, AS, ESD-CF and ESD-PTFE compounds.
Reference datasheet — POM-C ESD is not in the instant-quote catalog. Upload your part and an engineer will quote it in this grade or suggest the closest stocked equivalent.
Values for the ESD-CB condition
POM-C ESD grades and fills
POM-C ESD is supplied in 5 conditions, soft to hard. ESD-CB is the default FabDigit quotes; the values on this page are for it.
Compare all 5 grades and fillsHide
| Grade · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness |
|---|---|---|---|---|---|
ESD + PTFE lubricated bearing grade | Choose for ESD-safe sliding/bearing parts where low friction and wear life outweigh strength. | 44 | 45 | 8 | 77 Shore D |
ESD extruded/compression stock shape (rod, plate) | Machining stock form of the conductive grade; slightly lower residual-stress and annealed for tight-tolerance CNC parts. | 49 | 50 | 10 | 79 Shore D |
ESD-CBDefault Conductive carbon-black filled | Default ESD acetal: black, truly conductive/dissipative, for tracks, guides and jigs that must bleed charge quickly. | 52 | 12 | ||
Static-dissipative carbon-modified | Choose when charge must drain slowly and controlled (no hard grounding path), e.g. wafer/PCB handling nests. | 54 | 55 | 15 | 79 Shore D |
Carbon-fibre reinforced conductive | Use where stiffness, creep resistance and low CTE matter as much as conductivity, e.g. long ESD-safe guide rails. | 95 | 3 |
Supply forms, finishes and certifications
Ways POM-C ESD is supplied — form, process route, surface or paperwork — without a datasheet of their own. The property values above apply.
| Option | What it is | Type |
|---|---|---|
AS | Permanently antistatic | Coating |
What is POM-C ESD?
POM-C ESD is an acetal copolymer made static-dissipative with carbon black, carbon fibre or antistatic additives, for example Ultraform N2320 EC, and is stocked as ESD-CB, ESD-SD, AS, ESD-CF and ESD-PTFE compounds. It keeps acetal low friction and dimensional stability for precision moving parts in electronics-handling equipment where dust attraction and static must be controlled: 1.44 g/cm³, 52 MPa tensile strength, 12 % elongation, 3.2 GPa modulus and 100 °C maximum service temperature. Elongation is lower than unfilled POM, parts are black only, and painting or plating needs pretreatment. Unfilled POM-C is the choice where static control is not required. POM-C ESD has a density of 1.44 g/cm³ (0.052 lb/in³), heavier than 85% of polymer grades. Its glass-transition temperature is -60°C (-76 °F). POM-C ESD has a yield strength of 50 MPa (7.25 ksi) and a tensile strength of 52 MPa (7.54 ksi) — stronger than 52% of polymer grades. Elongation at break is 12% and the elastic modulus is 3.2 GPa (0.464 Msi).
What is POM-C ESD used for?
- semiconductor handling components
- printer and copier mechanisms
- conveyor rollers in electronics assembly
Advantages
- Conducts heat well — 0.38 W/m·K (0.22 BTU/hr·ft·°F), better than 92% of polymer grades
- Easy to machine — 80/100, better than 84% of polymer grades
- Good UV / weathering resistance — 70/100, better than 83% of polymer grades
- Stiff — 3.2 GPa (0.464 Msi), better than 77% of polymer grades
Limitations
- Heavy — 1.44 g/cm³ (0.052 lb/in³), worse than 85% of polymer grades
POM-C ESD properties
Typical room-temperature values for POM-C ESD-ESD-CB; bars are the position among polymer grades.
Physical5
POM-C ESD has a density of 1.44 g/cm³ (0.052 lb/in³), heavier than 85% of polymer grades. Its glass-transition temperature is -60°C (-76 °F).
Mechanical16
POM-C ESD has a yield strength of 50 MPa (7.25 ksi) and a tensile strength of 52 MPa (7.54 ksi) — stronger than 52% of polymer grades. Elongation at break is 12% and the elastic modulus is 3.2 GPa (0.464 Msi).
Thermal11
POM-C ESD is rated for continuous service to 100°C (212 °F). It conducts heat at 0.38 W/m·K (0.22 BTU/hr·ft·°F), better than 92% of polymer grades. Thermal expansion is 100 µm/m·K (55.6 µin/in·°F).
Electrical3
POM-C ESD has an electrical resistivity of 10 Ω·m.
Chemical & Environmental3
Corrosion resistance is very good (72/100), worse than 70% of polymer grades. UV resistance is very good.
Sustainability4
Producing a kilogram of POM-C ESD takes about 100 MJ of energy and emits 4 kg of CO₂ — less than 61% of polymer grades. Typical recycled content is 0%.
Manufacturability8
POM-C ESD's machinability is very good (80/100, better than 84% of polymer grades); weldability fair (35/100); formability poor (25/100).
Common Calculations5
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Strength versus weight in the polymer family
Yield strength against density for every polymer grade FabDigit runs. POM-C ESD is highlighted; hover a dot for its name, or open the interactive family chart.
Working with POM-C ESD
Is POM-C ESD easy to machine?
Machines like unfilled acetal with sharp polished-flute carbide tools and high speeds; carbon black is mildly abrasive, keep chips clear and avoid heat build-up to prevent gumming.
Can POM-C ESD be welded?
Hot-plate, ultrasonic and vibration welding are feasible with joint-design care; solvent bonding is impractical and adhesives need plasma/flame or chemical pre-treatment.
Can POM-C ESD be formed, bent or molded?
Dry lightly (80 °C, 2–3 h) if wet, melt 185–210 °C, mold 80–100 °C; disperse carbon black with adequate back-pressure and expect ~1.4–2.2 % shrinkage with anisotropy in thick sections; never exceed 230 °C or hold long (formaldehyde evolution).
POM-C ESD chemical composition (wt %)
Limits by weight percent from the governing specification, written the way the spec states them — a single maximum for impurities, a range for alloying elements, and the base element as balance. Nominal is the typical mid-range value.
| Element | Spec limit (wt %) | Nominal |
|---|---|---|
| conductive carbon blacksets 10³–10⁶ Ω surface resistivity in the default grade | 4 – 15 | 8 |
| heat/formaldehyde stabilizers, acid scavproprietary additive package | 0.5 – 2 | 1 |
| polyoxymethylene copolymer (formaldehydePOM-C base resin | ≥ 82 (balance) |
What surface finishes work on POM-C ESD?
Cannot be plated or painted without pretreatment; supplied black with matte surface, so functional finishing is limited to machining, light bead-blast, or laser marking (contrast is poor on black).
Equivalent designations
Standards and trade names that resolve to POM-C ESD in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- Trade names
- Ultraform N2320 EC
How much does POM-C ESD cost?
POM-C ESD is a premium-cost polymer ($$$), cheaper than about 51% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
POM-C ESD — frequently asked
What is POM-C ESD used for?
POM-C ESD is typically used for semiconductor handling components, printer and copier mechanisms and conveyor rollers in electronics assembly. In short: static-dissipative acetal; low-friction ESD moving parts; black-only surface.
What is the yield strength of POM-C ESD?
POM-C ESD has a typical yield strength of 50 MPa (7.25 ksi) and a tensile strength of 52 MPa (7.54 ksi) — stronger than 52% of polymer grades. Strength varies by condition: see the 5 listed tempers.
Is POM-C ESD easy to machine?
Yes — machinability is rated very good (80/100, better than 84% of polymer grades). Machines like unfilled acetal with sharp polished-flute carbide tools and high speeds; carbon black is mildly abrasive, keep chips clear and avoid heat build-up to prevent gumming.
Can POM-C ESD be welded?
With care — weldability is rated fair (35/100). Hot-plate, ultrasonic and vibration welding are feasible with joint-design care; solvent bonding is impractical and adhesives need plasma/flame or chemical pre-treatment.
What surface finishes work on POM-C ESD?
Cannot be plated or painted without pretreatment; supplied black with matte surface, so functional finishing is limited to machining, light bead-blast, or laser marking (contrast is poor on black).
Can POM-C ESD be formed, bent or molded?
Dry lightly (80 °C, 2–3 h) if wet, melt 185–210 °C, mold 80–100 °C; disperse carbon black with adequate back-pressure and expect ~1.4–2.2 % shrinkage with anisotropy in thick sections; never exceed 230 °C or hold long (formaldehyde evolution).
What is the maximum service temperature of POM-C ESD?
POM-C ESD is rated for continuous use to about 100°C (212 °F), and briefly to 140°C. Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between POM-C ESD ESD-CB and POM-C ESD ESD-SD?
ESD-CB is the default condition — default ESD acetal: black, truly conductive/dissipative, for tracks, guides and jigs that must bleed charge quickly. ESD-SD: choose when charge must drain slowly and controlled (no hard grounding path), e.g. wafer/PCB handling nests. Yield strength is 50 MPa in ESD-CB versus 54 MPa in ESD-SD.
How much does POM-C ESD cost?
POM-C ESD is a premium-cost polymer ($$$), cheaper than about 51% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
Sources
- Ultraform N2320 EC (electrically conductive POM copolymer) product information — BASF (2022)
- TECAFORM AH ELS / AH SD stock shape data sheets — Ensinger (2023)
- CAMPUS plastics database — POM-C conductive and antistatic grades — CWFG/CAMPUS (2024)
- ISO 527, ISO 178, ISO 75, ISO 306, IEC 62631 test methods — ISO/IEC (2019)
- IEC 61340-5-1 Protection of electronic devices from electrostatic phenomena — IEC (2016)
- Engineered Materials Handbook Vol. 2: Engineering Plastics — ASM International (1988)
Property data is compiled from published supplier and standards handbooks and normalised for comparison; hardness values on non-Brinell scales are converted approximately for charting only. Manufacturability limits are FabDigit quote-engine defaults and may be relaxed by engineering review. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.