POM-C MF (mineral-filled)
also Celcon M25
POM-C MF is an acetal copolymer loaded with mineral filler (talc or calcium carbonate), based on resins such as Celcon M25, at levels from MF10 to MF30 with glass-bead, lubricated, impact-modified and UV compounds also on file.
Reference datasheet — POM-C MF (mineral-filled) 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 MF20 condition
POM-C MF (mineral-filled) grades and fills
POM-C MF (mineral-filled) is supplied in 8 conditions, soft to hard. MF20 is the default FabDigit quotes; the values on this page are for it.
Compare all 8 grades and fillsHide
| Grade · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness |
|---|---|---|---|---|---|
Impact-modified mineral filled POM-C | Elastomer-toughened mineral grade for snap-fits and clips that must survive impact yet stay dimensionally stable. | 43 | 44 | 20 | 76 Shore D |
Mineral filled + PTFE/silicone lubricated bearing grade | For low-warpage sliding parts: filler holds dimensions while PTFE or silicone lowers friction and wear rate. | 47 | 48 | 6 | 80 Shore D |
30 % mineral filled POM-C | Highest mineral loading for maximum dimensional stability and stiffness where impact loading is low. | 52 | 52 | 4 | |
UV/weather-stabilized mineral filled POM-C | Pick for outdoor or under-hood parts exposed to sunlight; carbon black plus HALS/UV absorber suppress chalking and surface cracking. | 54 | 55 | 8 | 82 Shore D |
MF20Default 20 % mineral (talc/CaCO₃) filled POM-C, standard low-warpage grade | The mainstream mineral-filled acetal: best balance of low shrinkage, stiffness and cost for precision moulded housings and brackets. | 55 | 56 | 8 | 82 HRM |
Glass-bead / spherical mineral filled POM-C | Choose when isotropic shrinkage and minimum warpage matter more than strength; spherical filler avoids fibre orientation effects. | 55 | 55 | 6 | 83 Shore D |
Heat-stabilized mineral filled POM-C | Extra thermal/oxidative stabilizer package for long-term service near 110–120 °C, e.g. under-hood or hot-water contact parts. | 55 | 56 | 7 | 82 Shore D |
10 % mineral filled POM-C | Light mineral loading when only modest shrinkage/warpage reduction is needed and toughness must be preserved. | 58 | 58 | 15 |
What is POM-C MF (mineral-filled)?
POM-C MF is an acetal copolymer loaded with mineral filler (talc or calcium carbonate), based on resins such as Celcon M25, at levels from MF10 to MF30 with glass-bead, lubricated, impact-modified and UV compounds also on file. The filler reduces moulding shrinkage and warpage and lowers cost while raising stiffness: 1.56 g/cm³ density, 55 MPa yield, 56 MPa tensile strength, 4 GPa modulus and 8 % elongation. Toughness is well below unfilled POM, the mineral is abrasive and costs 2–3× tool life (machinability 72), and welded joints are weaker. Use unfilled POM-C where impact or fatigue governs. POM-C MF (mineral-filled) has a density of 1.56 g/cm³ (0.0564 lb/in³), heavier than 91% of polymer grades. Its glass-transition temperature is -60°C (-76 °F). POM-C MF (mineral-filled) has a yield strength of 55 MPa (7.98 ksi) and a tensile strength of 56 MPa (8.12 ksi) — stronger than 62% of polymer grades. Elongation at break is 8% and the elastic modulus is 4 GPa (0.58 Msi).
What is POM-C MF (mineral-filled) used for?
- precision molded housings
- low-warpage flat components
- cost-sensitive consumer hardware
Advantages
- Conducts heat well — 0.4 W/m·K (0.231 BTU/hr·ft·°F), better than 93% of polymer grades
- Stiff — 4 GPa (0.58 Msi), better than 86% of polymer grades
- Low embodied carbon — 3 kg CO₂/kg, better than 83% of polymer grades
- Easy to machine — 72/100, better than 76% of polymer grades
Limitations
- Heavy — 1.56 g/cm³ (0.0564 lb/in³), worse than 91% of polymer grades
- Degrades in UV without stabilisers — 25/100, worse than 76% of polymer grades
POM-C MF (mineral-filled) properties
Typical room-temperature values for POM-C MF (mineral-filled)-MF20; bars are the position among polymer grades.
Physical5
POM-C MF (mineral-filled) has a density of 1.56 g/cm³ (0.0564 lb/in³), heavier than 91% of polymer grades. Its glass-transition temperature is -60°C (-76 °F).
Mechanical15
POM-C MF (mineral-filled) has a yield strength of 55 MPa (7.98 ksi) and a tensile strength of 56 MPa (8.12 ksi) — stronger than 62% of polymer grades. Elongation at break is 8% and the elastic modulus is 4 GPa (0.58 Msi).
Thermal11
POM-C MF (mineral-filled) is rated for continuous service to 100°C (212 °F). It conducts heat at 0.4 W/m·K (0.231 BTU/hr·ft·°F), better than 93% of polymer grades. Thermal expansion is 75 µm/m·K (41.7 µin/in·°F).
Electrical7
POM-C MF (mineral-filled) 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 very good (72/100), worse than 70% of polymer grades. UV resistance is poor.
Sustainability4
Producing a kilogram of POM-C MF (mineral-filled) takes about 82 MJ of energy and emits 3 kg of CO₂ — less than 83% of polymer grades. Typical recycled content is 0%.
Manufacturability8
POM-C MF (mineral-filled)'s machinability is very good (72/100, better than 76% of polymer grades); weldability poor (30/100); 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 MF (mineral-filled) is highlighted; hover a dot for its name, or open the interactive family chart.
Working with POM-C MF (mineral-filled)
Is POM-C MF (mineral-filled) easy to machine?
Machines cleanly with sharp carbide tools, high speed and light feed; mineral is abrasive so expect 2–3× tool wear versus unfilled POM, and relieve moulded-in stress before tight-tolerance finishing.
Can POM-C MF (mineral-filled) be welded?
Hot-plate, vibration and ultrasonic welding work but joint strength is reduced by the filler; adhesive bonding requires flame/plasma or chromic-acid etch pretreatment.
Can POM-C MF (mineral-filled) be formed, bent or molded?
Inject at 190–215 °C melt / 70–110 °C mould with generous gates and holding pressure; keep melt residence short (<8 min) to avoid formaldehyde evolution and always vent the mould.
POM-C MF (mineral-filled) 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 |
|---|---|---|
| mineral filler (talc / calcium carbonatesurface-treated for coupling; talc most common | 10 – 30 | 20 |
| stabilizer package (antioxidant, formald | 0.3 – 1.5 | 0.8 |
| lubricant / processing aid | 0.1 – 0.5 | 0.2 |
| polyoxymethylene copolymer (oxymethylenePOM-C base resin | ≥ 68 (balance) |
What surface finishes work on POM-C MF (mineral-filled)?
Not paintable or platable without surface activation; filler gives a matt, slightly grainy surface, so texture the tool rather than aiming for high gloss.
Equivalent designations
Standards and trade names that resolve to POM-C MF (mineral-filled) in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- Trade names
- Celcon M25
How much does POM-C MF (mineral-filled) cost?
POM-C MF (mineral-filled) is a standard-cost polymer ($$), cheaper than about 71% 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 MF (mineral-filled) — frequently asked
What is POM-C MF (mineral-filled) used for?
POM-C MF (mineral-filled) is typically used for precision molded housings, low-warpage flat components and cost-sensitive consumer hardware. In short: lowest-warpage acetal grade; stiffer than unfilled POM; abrasive on tooling.
What is the yield strength of POM-C MF (mineral-filled)?
POM-C MF (mineral-filled) has a typical yield strength of 55 MPa (7.98 ksi) and a tensile strength of 56 MPa (8.12 ksi) — stronger than 62% of polymer grades. Strength varies by condition: see the 8 listed tempers.
Is POM-C MF (mineral-filled) easy to machine?
Yes — machinability is rated very good (72/100, better than 76% of polymer grades). Machines cleanly with sharp carbide tools, high speed and light feed; mineral is abrasive so expect 2–3× tool wear versus unfilled POM, and relieve moulded-in stress before tight-tolerance finishing.
Can POM-C MF (mineral-filled) be welded?
Not readily — weldability is rated poor (30/100). Hot-plate, vibration and ultrasonic welding work but joint strength is reduced by the filler; adhesive bonding requires flame/plasma or chromic-acid etch pretreatment.
What surface finishes work on POM-C MF (mineral-filled)?
Not paintable or platable without surface activation; filler gives a matt, slightly grainy surface, so texture the tool rather than aiming for high gloss.
Can POM-C MF (mineral-filled) be formed, bent or molded?
Inject at 190–215 °C melt / 70–110 °C mould with generous gates and holding pressure; keep melt residence short (<8 min) to avoid formaldehyde evolution and always vent the mould.
What is the maximum service temperature of POM-C MF (mineral-filled)?
POM-C MF (mineral-filled) 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 MF (mineral-filled) MF20 and POM-C MF (mineral-filled) MF-IM?
MF20 is the default condition — the mainstream mineral-filled acetal: best balance of low shrinkage, stiffness and cost for precision moulded housings and brackets. MF-IM: elastomer-toughened mineral grade for snap-fits and clips that must survive impact yet stay dimensionally stable. Yield strength is 55 MPa in MF20 versus 43 MPa in MF-IM.
How much does POM-C MF (mineral-filled) cost?
POM-C MF (mineral-filled) is a standard-cost polymer ($$), cheaper than about 71% 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
- Hostaform / Celcon acetal copolymer product range and processing guide — Celanese (2023)
- Ultraform (POM) product line and processing data — BASF (2022)
- CAMPUS plastics database — POM-C mineral-filled ISO 10350 datasets — CWFG / CAMPUS (2024)
- ISO 9988 Plastics — Polyoxymethylene (POM) moulding and extrusion materials — ISO (2020)
- ASM Handbook Vol. 2 / Engineering Plastics — acetal resins — 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.