CELANESE HOSTAFORM C 13021 Standard POM Resin

Physical Properties

• Density: As specified in ISO 1183, the material’s density is 1.41 g/cc (0.0509 lb/in³), indicating mass per unit volume for engineering use.
• Density of Compound: The compound density measures 1.20 g/cc (0.0434 lb/in³), reflecting a lower density compared to the base material.
• Water Absorption at Saturation: Following ISO 62, the material absorbs 0.65% water at saturation, highlighting its maximum moisture uptake capacity.
• Linear Mold Shrinkage, Flow: Per ISO 294-4, flow-direction shrinkage is 0.020 cm/cm (0.020 in/in) for molded components during processing.
• Linear Mold Shrinkage, Transverse: Transverse shrinkage is 0.018 cm/cm (0.018 in/in) as per ISO 294-4, showing variation perpendicular to flow.
• Melt Flow: At 190 °C (374 °F) with a 2.16 kg (4.76 lb) load, the melt flow rate is 12 g/10 min as tested by ISO 1133.

Polymer Properties:

• Base Material: Polyoxymethylene (POM)
• Modification Features
  
  • Resists a broad spectrum of chemicals, enhancing durability in harsh environments.
  • Maintains good dimensional stability over time and with temperature changes.
  • Offers high – level rigidity, suitable for parts under heavy loads.
  • Has low – friction properties, reducing energy loss in moving parts.

Applications:

• Automotive Engineering:
  Hostaform® C 13021 is widely used in automotive applications due to its high mechanical strength, chemical resistance, and dimensional stability. Specific applications include:
  • Gears and Bearings: The resin’s low friction (coefficient of friction ~0.2–0.3 against steel) and wear resistance make it suitable for gears and bearings in automotive systems like window regulators and seat adjusters. Its high rigidity (flexural modulus ~2,600 MPa, ISO 178) ensures durability under dynamic loads.
  • Housings and Clips: Used in interior and under-hood components, such as dashboard parts and fuel system connectors, due to its resistance to fuels and solvents. 
• Precision Engineering:
  The moderate flow and high toughness of Hostaform® C 13021 make it ideal for precision-molded parts with tight tolerances.
  • Connectors and Fasteners: Used in snap-fit connectors and fasteners requiring high rigidity and resilience. The resin’s nominal tensile strain at break (~30%, ISO 527-2) allows for elastic deformation without failure.
  • Thin-Walled Components: Its easy-flow characteristics (viscosity vs. shear rate data per ISO 11403) enable the production of thin-walled parts with wall thicknesses as low as 0.5 mm, maintaining high strength and dimensional accuracy.
• Electrical and Electronic Industry:
  Hostaform® C 13021 is used in electrical components due to its excellent electrical insulation properties and compliance with safety standards.
  • Insulating Housings: Employed in electrical connectors and switchgear housings, leveraging its surface resistivity (~10¹⁴ Ω, IEC 60093) and volume resistivity (~10¹⁴ Ω·cm, IEC 60093) for reliable insulation.
  • Precision Components: Used in small, intricate parts like relay components, benefiting from its high hardness (Ball Indentation Hardness ~140 MPa, ISO 2039-1).
• Domestic Appliances:
  Hostaform® C 13021 is utilized in household appliances for components requiring durability, chemical resistance, and aesthetic quality.
  • Appliance Components: Used in parts like pump housings, valves, and handles in dishwashers and washing machines, due to its resistance to hydrolysis and detergents.
  • Food-Contact Applications: Its FDA compliance (21 CFR 177.2470) and EU Regulation (EU) 10/2011 make it suitable for food-processing equipment components, such as conveyor belts and mixing blades.
• Industrial Components:
  Hostaform® C 13021 is applied in various industrial settings for components requiring robust mechanical properties and chemical resistance.
  • Conveyor Systems: Used in rollers and guides due to its low friction and wear resistance, reducing maintenance needs.
  • Piping and Fittings: Employed in fluid-handling systems, leveraging its resistance to solvents and alkalis, with a maximum water content of 0.2% ensuring minimal degradation.