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Plastics & Elastomers
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Plastics & Elastomers
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Arnitel® UM551-V

Technical Datasheet | Supplied by DSM
Arnitel® UM551-V is a high-performance, flame retardant halogen and phosphorous-free thermoplastic co-polyester (TPC) grade by DSM. Is an impact modified, heat-, light- and UV stabilized grade. Is suitable for processing by extrusion and injection molding. Possesses flexibility, strength, excellent processing characteristics, excellent mechanical properties, excellent elasticity, good resistance in heat aging tests 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. Designed for use by Automotive OEMs. Arnitel® UM551-V can withstand very high burst pressures and retains its properties better at higher temperatures than PA12. Meets ISO 18064 for TPC-ES FR.
Product Type
  • Polyester TPE > COPE
  • Polyester [Polyester] > > Co-polyester
Physical Form
Product Status
Geographical Availability
Central and Eastern Europe, Western Europe
Applications/ Recommended for
  • Automotive
  • Extrusion
  • Injection molding - thermoplastics
Labels/Agency Rating
Key Features
  • Chemical resistance, Good
  • Elasticity, High
  • Fatigue Resistant
  • Flame retarded, Halogen free
  • Flexibility, Good
  • Heat Aging Resistance, Good
  • Heat stabilized
  • Impact modified
  • Light Stabilized
  • Processability, Good
  • Strength, Good
  • UV Resistance, Good
  • Heat Resistance, High
  • Thermal Stability, Good
  • Fungus Resistance
  • Phosphorous-Free
  • UV-Stabilized

Arnitel® UM551-V Properties

Electrical Properties

Value & Unit
Test Condition
Test Method
Relative Permittivity
(100 Hz)
IEC 60250
Dissipation Factor
(100 Hz)
IEC 60250
Dielectric Strength
20 kV/mm
( )
IEC 60243-1

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