POM-C FR (Flame-retardant grade)
Flame-retardant grade
ASTM D4181-POM0110 · ISO POM · also Celcon, Duracon
Niche halogen-free FR copolymer grades for electrical parts; markedly lower toughness and processing latitude than standard POM-C.
Values for the FR condition
Other POM-C grades and fills
POM-C is listed in 10 conditions; see the grade overview at POM-C.
Compare all 10 grades and fillsHide
| Grade · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness |
|---|---|---|---|---|---|
elastomer-toughened POM-C | Pick for snap-fits, clips and parts seeing shock or low-temperature impact, at the cost of stiffness and heat resistance. | 45 | 46 | 120 | 60 HRM |
~20% PTFE lubricated bearing grade | Choose for dry-running bearings, slides and wear parts needing the lowest friction and stick-slip-free motion. | 47 | 48 | 15 | 78 Shore D |
X-ray/metal-detectable food-contact grade (blue) | Specify for food, pharma and packaging machinery parts that must be found by inline metal detectors or X-ray if a fragment breaks off. | 50 | 50 | 8 | 82 Shore D |
FRThis page Flame-retardant grade | Niche halogen-free FR copolymer grades for electrical parts; markedly lower toughness and processing latitude than standard POM-C. | 50 | 52 | 8 | 82 Shore D |
Antistatic / static-dissipative | Use for handling tooling, wafer/electronics fixtures and fuel-contact parts where charge build-up must be bled off (10⁴–10⁹ Ω surface). | — | 52 | 10 | 80 HRM |
oil/silicone/PE-wax internally lubricated | For quiet, self-lubricating gear trains and window/seat mechanisms where PTFE cost or colour is an issue. | 53 | 55 | 25 | 79 Shore D |
Molybdenum disulphide lubricated | Low-cost wear grade with slightly higher stiffness and better wear against steel than natural POM-C; MoS2 also nucleates a finer crystalline structure. | 58 | 60 | 18 | 82 Shore D |
UV Stabilized | Use for outdoor or lamp-adjacent parts; carbon black plus HALS/UV absorber greatly slows chalking and surface embrittlement. | 63 | 65 | 30 | 81 Shore D |
25% glass-fiber reinforced | Use where stiffness, creep resistance and elevated-temperature load bearing matter more than toughness or wear on mating parts. | — | 120 | 3 | 88 HRM |
30% glass-fiber reinforced | Highest-stiffness standard POM-C grade for structural brackets, pump housings and load-bearing gears at 80–110 °C. | — | 130 | 2.5 | 90 HRM |
What is POM-C FR?
POM-C FR is POM-C in the FR grade — niche halogen-free FR copolymer grades for electrical parts; markedly lower toughness and processing latitude than standard POM-C. POM-C FR 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 8% and the elastic modulus is 3 GPa (0.435 Msi). POM-C FR has a density of 1.5 g/cm³ (0.0542 lb/in³), heavier than 88% of polymer grades. Its glass-transition temperature is -60°C (-76 °F).
Advantages
- Conducts heat well — 0.33 W/m·K (0.191 BTU/hr·ft·°F), better than 89% of polymer grades
- Easy to machine — 78/100, better than 81% of polymer grades
Limitations
- Needs corrosion protection — 55/100, worse than 94% of polymer grades
- Heavy — 1.5 g/cm³ (0.0542 lb/in³), worse than 88% of polymer grades
POM-C FR properties
Typical room-temperature values for POM-C FR; 28 are specific to this condition. Other listed values are POM-C reference data and may not represent this condition. Bars are the position among polymer grades.
Physical6
POM-C FR has a density of 1.5 g/cm³ (0.0542 lb/in³), heavier than 88% of polymer grades. Its glass-transition temperature is -60°C (-76 °F).
Mechanical17
POM-C FR 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 8% and the elastic modulus is 3 GPa (0.435 Msi).
Thermal11
POM-C FR is rated for continuous service to 95°C (203 °F). It conducts heat at 0.33 W/m·K (0.191 BTU/hr·ft·°F), better than 89% of polymer grades. Thermal expansion is 110 µm/m·K (61.1 µin/in·°F).
Electrical7
POM-C FR is an electrical insulator with a dielectric strength of 20 kV/mm (508 V/mil) and a resistivity of 1×10¹² Ω·m.
Chemical & Environmental3
Corrosion resistance is good (55/100), worse than 94% of polymer grades. UV resistance is poor.
Sustainability4
Producing a kilogram of POM-C FR takes about 100 MJ of energy and emits 3.9 kg of CO₂ — less than 61% of polymer grades. Typical recycled content is 0%.
Manufacturability8
POM-C FR's machinability is very good (78/100, better than 81% of polymer grades); weldability poor (20/100); formability poor (20/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with POM-C FR
Is POM-C easy to machine?
Excellent — sharp positive-rake tools, high speed and light feed give chip-free, mirror-like surfaces; anneal (140–150 °C, slow cool) before finish cuts on thick or tight-tolerance parts.
Can POM-C be welded?
Poor to fair — hot-plate, ultrasonic, vibration and spin welding work with a joint design; solvent bonding is impossible and adhesives need flame/plasma or chromic-acid surface activation.
Can POM-C be formed, bent or molded?
Injection mould at 190–210 °C melt (never above ~230 °C or 20 min residence — decomposes to formaldehyde), mould 80–100 °C, generous gates and 2 % shrink allowance; extrusion of rod/plate needs slow, controlled cooling to avoid centre voids.
What surface finishes work on POM-C?
Machined or moulded surfaces are naturally low-friction and can be buffed; paint, print and plating require pre-treatment (etch/primer) because POM is chemically inert and non-polar.
POM-C 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 |
|---|---|---|
| comonomer (ethylene oxide / 1,3-dioxolanC–C linkages that block unzipping and give alkali/hot-water resistance | 1 – 4 | 2 |
| stabilizers (antioxidant, formaldehyde shindered phenol + amine/nitrogen scavenger package | 0.2 – 1 | 0.5 |
| pigment / carbon blackblack and UV grades only | 0 – 2 | 0.3 |
| oxymethylene (–CH2O–) unitsfrom trioxane polymerization | ≥ 96 (balance) | — |
POM-C FR — frequently asked
What is POM-C FR used for?
POM-C FR is typically used for chemical-resistant gears, bearings and bushings, slide plates and wear guides, valve bodies and seats, pump housings and impellers and conveyor chain components. In short: strong precise copolymer.
What is the yield strength of POM-C FR?
POM-C FR 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 10 listed tempers.
Is POM-C FR easy to machine?
Yes — machinability is rated very good (78/100, better than 81% of polymer grades). Excellent — sharp positive-rake tools, high speed and light feed give chip-free, mirror-like surfaces; anneal (140–150 °C, slow cool) before finish cuts on thick or tight-tolerance parts.
Can POM-C FR be welded?
Not readily — weldability is rated poor (20/100). Poor to fair — hot-plate, ultrasonic, vibration and spin welding work with a joint design; solvent bonding is impossible and adhesives need flame/plasma or chromic-acid surface activation.
What surface finishes work on POM-C FR?
Machined or moulded surfaces are naturally low-friction and can be buffed; paint, print and plating require pre-treatment (etch/primer) because POM is chemically inert and non-polar.
Can POM-C FR be formed, bent or molded?
Injection mould at 190–210 °C melt (never above ~230 °C or 20 min residence — decomposes to formaldehyde), mould 80–100 °C, generous gates and 2 % shrink allowance; extrusion of rod/plate needs slow, controlled cooling to avoid centre voids.
What is the maximum service temperature of POM-C FR?
POM-C FR is rated for continuous use to about 95°C (203 °F), and briefly to 140°C. Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
Can FabDigit make parts in POM-C FR?
Yes — POM-C FR is available for CNC machining, sheet metal and injection molding with instant online pricing. Upload a STEP file to get a price and a DFM check.
Sources
- ISO 9988-1/-2 Plastics — Polyoxymethylene (POM) moulding and extrusion materials — ISO (2020)
- ASTM D6100 Standard Classification for Polyoxymethylene (POM) Molding and Extrusion Materials — ASTM (2020)
- Hostaform C 9021 / GV1-30 / TF product data sheets — Celanese (2023)
- Ultraform (POM) product range brochure — BASF (2022)
- TECAFORM AH natural / LA / ELS / MDblue datasheets — Ensinger (2023)
- Ertacetal C stock shapes data — Mitsubishi Chemical Advanced Materials (2022)
- CAMPUS plastics database — POM-C single-point data (ISO 10350) — CWFG (2024)
- Engineered Materials Handbook Vol. 2: Engineering Plastics — ASM International (1988)
Property data is compiled from published supplier and standards handbooks and normalised for comparison. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.