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Plastics & Elastomers
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Plastics & Elastomers
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Hostaform® C 9021 65

Technical Datasheet | Supplied by Celanese
Hostaform® C 9021 65 is a crystalline polyacetal polyoxymethylene (POM) copolymer. Exhibits good resistance to chemicals (solvents, fuels & strong alkalis), wear, long-term fatigue, creep, hydrolysis, stress cracking, thermal and oxidative degradation. Possesses high rigidity, hardness, toughness, excellent resilience, good heat distortion temperature (to 100°C), thermal stability, good slip properties and low moisture absorption. Is suitable for processing by injection molding and sheet- & film extrusion. Used in automotive engineering, precision engineering, electric and electronic industry and domestic appliances. Complies with RoHS, FDA according to 21 CFR 177.2470 and EG-directive 2002/72/EU. Meets the recommendation XXXIII for consumer goods of the BgVV and UL flame ratings.
Product Type
POM (Polyacetal, Polyoxymethylene) > POM
Product Status
Applications/ Recommended for
  • Electronics / Computers
  • Engineering / manufacturing
  • Electrical markets
  • Appliances
  • Automotive
  • Injection molding - thermoplastics
  • Extrusion > Sheet & Plaques (standard)
  • Extrusion > Films (cast)

Hostaform® C 9021 65 Properties

Physical Properties

Value & Unit
Test Condition
Test Method
Specific Gravity
1410 kg/m³
( )
ISO 1183
Melt Volume Flow Rate (MVR)
8 cm³/10 min
(190°C/2.16 kg)
ISO 1133
Water Absorption
0.65 %
(23°C, at saturation)
ISO 62

Hostaform® C 9021 65 Processing Guidelines

Injection Molding Properties

Value & Unit
Test Condition
Test Method
Suggested Max Moisture
0.15 %
Drying Time
3 - 4 hr
Drying Temperature
120 - 140 °C
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