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Plastics & Elastomers
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Plastics & Elastomers
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Hostaform® C 2521 80/3726

Technical Datasheet | Supplied by Celanese
HOSTAFORM® C 2521 80/3726 is a stiff flowing type, very hard and rigid, heavy-metal free POM (polyoxymethylene) copolymer grade. Exhibits outstanding chemical (solvents, fuels & strong alkalis)-, hydrolysis-, fatigue-, creep-, moisture- and stress cracking resistance. Also exhibits toughness (up to -40°C), good heat distortion temperature (up to 100°C), very good slip/ wear properties, excellent resilience, low moisture absorption and higher stability to thermal and oxidative degradation compared to acetal homopolymers. Suitable for injection molding of thick-walled, void-free molded parts and extrusion of boards and pipes.
Product Type
POM (Polyacetal, Polyoxymethylene) > POM Coppolymer
Product Status
Applications/ Recommended for
  • Extrusion
  • Injection molding - thermoplastics

Hostaform® C 2521 80/3726 Properties

Physical Properties

Value & Unit
Test Condition
Test Method
Specific Gravity
1.41 g/cm³
ISO 1183
Water Absorption
0.65 %
(23°C, 24 hr)
ISO 62
Melt Volume Flow Rate (MVR)
2.5 cm3/10 min
(190°C/ 2.16 kg)
ISO 1133

Hostaform® C 2521 80/3726 Processing Guidelines

Injection Molding Properties

Value & Unit
Test Condition
Test Method
Suggested Max Moisture
0.15 %
Mold shrinkage (Parallel), ISO 294-4
2.1 %
Drying Time
3 - 4 hr
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