BASF Ultraform S2320 Aqua AT POM Resin

Physical Properties

• Density: By ISO 1183, it’s 1.41 g/cc (0.0509 lb/in³). This affects product weight, crucial for food & drink parts.
• Water Absorption: At 50% RH, equilibrium is 0.20% (ISO 62); saturation is 0.90%. Impacts performance in wet conditions.
• Maximum Moisture Content: Set at 0.15. Ensures material quality, prevents issues in processing and use.
• Linear Mold Shrinkage, Flow & Transverse: Both are 0.021 cm/cm (0.021 in/in) per ISO 294 – 4. Needed for accurate mold design.
• Melt Flow: At 190 °C (374 °F), 2.16 kg (4.76 lb) load, it’s 11 g/10 min (ISO 1133). Affects injection – molding efficiency.

Polymer Properties:

• Base Material: Polyoxymethylene (POM) copolymer
• Key Features and Benefits：
  • The suitability of Ultraform® S2320 Aqua AT for these demanding applications stems from a combination of key features:
    • Certified for Safety: The material has received numerous certifications for drinking water and food contact, ensuring compliance with international standards (see certifications below).
    • Excellent Mechanical Properties: It offers a high degree of stiffness and strength, ensuring durability and long-term performance of the molded parts.
    • Dimensional Stability: The material exhibits low water absorption and a low tendency to creep, which means that components maintain their shape and tolerances over time, even when submerged in water or subjected to mechanical stress.
    • Chemical Resistance: Ultraform® S2320 Aqua AT is resistant to a wide range of chemicals, including cleaning agents and common food substances, preventing degradation and ensuring the purity of the end product.
    • Good Sliding Friction Properties: This makes it suitable for moving parts within assemblies, reducing wear and ensuring smooth operation.

Applications:

Ultraform® S2320 Aqua AT is the preferred material for components that will be in direct contact with potable water and food products. Its primary applications include:

• Drinking Water Systems: This is the core application area for this grade. It is used in a variety of components such as:
  • Water meter housings and internal parts
  • Faucet cartridges and aerators
  • Valves and fittings
  • Pump impellers and housings
  • Showerheads and other sanitary fixtures
• Food and Beverage Industry: Its compliance with food contact regulations makes it suitable for:
  • Components in coffee machines (e.g., brewing units, valves)
  • Parts for kitchen appliances that handle food
  • Conveyor system components in food processing lines
  • Dispensers for beverages
• Consumer Goods and Personal Care:
  • Components in personal care devices that may come into contact with water, such as electric toothbrushes or shavers.
  • Housings and functional parts for small kitchen and household appliances.