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Plastics & Elastomers
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Arnitel® EL550

Technical Datasheet | Supplied by DSM
Arnitel® EL550 by DSM is a high-performance, impact modified thermoplastic co-polyester (TPC) grade. It is suitable for processing by 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. Arnitel® EL550 shows 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 furniture, pumps & valves in industrial equipments, sports & leisure. Meets ISO 18064 for TPC-ET.
Product Type
  • Polyester TPE > COPE
  • Polyester [Polyester] > > Co-polyester
Physical Form
Product Status
Geographical Availability
Central and Eastern Europe, Western Europe
Applications/ Recommended for
  • Sports & Leisures
  • Furnitures
  • Injection molding - thermoplastics
Labels/Agency Rating
ISO 18064 TPC-ET
Key Features
  • Flexibility, Good
  • Elasticity, High
  • Impact modified
  • Fatigue Resistant
  • UV Resistance, Good
  • Processability, Good
  • Thermal Stability, Good
  • Strength, Good
  • Heat Resistance, High
  • Fungus Resistance
  • Heat Aging Resistance, Good
  • Chemical resistance, Good

Arnitel® EL550 Properties

Physical Properties

Value & Unit
Test Condition
Test Method
Water Absorption
0.65 %
( )
ISO 62
Humidity Absorption
0.2 %
( )
ISO 62
Linear Mold Shrinkage, Flow
1.55 %
( )
ISO 294-4

Arnitel® EL550 Processing Guidelines

Injection Molding Properties

Value & Unit
Test Condition
Test Method
Center Temperature
210 - 230 °C
Suggested Max Moisture
0.05 %
Moisture Content
0.05 %
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