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Arnitel® CM551

Technical Datasheet | Supplied by DSM
Arnitel® CM551 by DSM is a high-performance thermoplastic copolyester (TPC) elastomer. It is suitable for processing by extrusion. Possesses flexibility, strength, excellent processing characteristics, excellent mechanical properties, excellent elasticity, outstanding heat aging properties and permeability to water vapor. Shows high temperature-, thermal-, UV-, fungus- and fatigue resistance. Offers chemical resistance against household chemicals like cleaning agents, sunscreen lotion and automotive greases and oils. Arnitel® CM551 provides very low oxygen permeability combined with very high carbon dioxide permeability for usage in fruit and vegetable film packaging. It can withstand very high burst pressures and retains its properties better at higher temperatures than PA 12. Used in wire and cable insulation in automotive.
Product Type
  • Polyester TPE > COPE
  • Polyester [Polyester] > > Co-polyester
Physical Form
Pellets
Product Status
COMMERCIAL
Geographical Availability
Central and Eastern Europe, Western Europe
Applications/ Recommended for
  • Wiring & Cables > Automotive
  • Extrusion
Labels/Agency Rating
ISO 6277 class D
Key Features
  • Chemical resistance, Good
  • Elasticity, High
  • Fatigue Resistant
  • Flexibility, Good
  • Heat Aging Resistance, Good
  • Processability, Good
  • Strength, Good
  • UV Resistance, Good
  • Heat Resistance, High
  • Thermal Stability, Good
  • Fungus Resistance

Arnitel® CM551 Properties

Physical Properties

Value & Unit
Test Condition
Test Method
Humidity Absorption
0.27 %
( )
ISO 62
Density
1240 kg/m³
(23°C)
ISO 1183
Melt-Volume Flow Rate
8 cm³/10 min
(At 230°C, 2.16 kg)
ISO 1133

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