Envalior Engineering Polymers

Technical datasheet

Arnitel® EL550

Supplied byEnvalior- Last Updated on Jan 29, 2026

Arnitel® EL550 by Envalior 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.
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Arnitel® EL550 properties

Electrical properties

PropertiesValue & unitTest conditionTest method
Comparative Tracking Index (CTI)0.0 Visible After LoginVisible After LoginVisible After Login
Dielectric Strength0.0 Visible After LoginVisible After LoginVisible After Login
Dissipation Factor0.0 Visible After LoginVisible After LoginVisible After Login
Volume Resistivity0.0 Visible After LoginVisible After LoginVisible After Login

Flammability properties

PropertiesValue & unitTest conditionTest method
Flame Rating0.0 Visible After LoginVisible After LoginVisible After Login
Glow Wire Flammability Index (GWFI)0.0 Visible After LoginVisible After LoginVisible After Login

Mechanical properties

PropertiesValue & unitTest conditionTest method
10% Modulus0.0 Visible After LoginVisible After LoginVisible After Login
100% Modulus0.0 Visible After LoginVisible After LoginVisible After Login
5% Modulus0.0 Visible After LoginVisible After LoginVisible After Login
50% Modulus0.0 Visible After LoginVisible After LoginVisible After Login
Compression Set0.0 Visible After LoginVisible After LoginVisible After Login
Elongation at Break0.0 Visible After LoginVisible After LoginVisible After Login
Elongation at Break, Nominal0.0 Visible After LoginVisible After LoginVisible After Login
Elongation at Yield0.0 Visible After LoginVisible After LoginVisible After Login
Hardness, Shore D0.0 Visible After LoginVisible After LoginVisible After Login
Impact Strength, Notched Charpy0.0 Visible After LoginVisible After LoginVisible After Login
Impact Strength, Notched Izod0.0 Visible After LoginVisible After LoginVisible After Login
Modulus of Elasticity0.0 Visible After LoginVisible After LoginVisible After Login
Tear Strength0.0 Visible After LoginVisible After LoginVisible After Login
Tensile Strength at Break0.0 Visible After LoginVisible After LoginVisible After Login

Other properties

PropertiesValue & unitTest conditionTest method
Dielectric Constant0.0 Visible After LoginVisible After LoginVisible After Login
Dielectric Constant0.0 Visible After LoginVisible After LoginVisible After Login
Moisture Absorption0.0 Visible After LoginVisible After LoginVisible After Login
Tensile Strength at Yield0.0 Visible After LoginVisible After LoginVisible After Login

Physical properties

PropertiesValue & unitTest conditionTest method
Density0.0 Visible After LoginVisible After LoginVisible After Login
Linear Mold Shrinkage0.0 Visible After LoginVisible After LoginVisible After Login
Linear Mold Shrinkage, Flow0.0 Visible After LoginVisible After LoginVisible After Login
Melt Volume Flow Rate (MVR)0.0 Visible After LoginVisible After LoginVisible After Login
Water Absorption0.0 Visible After LoginVisible After LoginVisible After Login

Thermal properties

PropertiesValue & unitTest conditionTest method
CTE, Linear0.0 Visible After LoginVisible After LoginVisible After Login
CTE, Linear, Parallel to Flow0.0 Visible After LoginVisible After LoginVisible After Login
Deflection Temperature at 0.46 MPa (66 psi)0.0 Visible After LoginVisible After LoginVisible After Login
Glass Transition Temperature (Tg)0.0 Visible After LoginVisible After LoginVisible After Login
Melting Point0.0 Visible After LoginVisible After LoginVisible After Login
UL RTI, Electrical0.0 Visible After LoginVisible After LoginVisible After Login
UL RTI, Mechanical with Impact0.0 Visible After LoginVisible After LoginVisible After Login
UL RTI, Mechanical without Impact0.0 Visible After LoginVisible After LoginVisible After Login
Vicat Softening Temperature0.0 Visible After LoginVisible After LoginVisible After Login

Arnitel® EL550 Processing Guidelines

Injection Molding Processing Guidelines

PropertiesValue & unitTest conditionTest method
Back PressureVisible After LoginVisible After Login
Center TemperatureVisible After LoginVisible After Login
Front TemperatureVisible After LoginVisible After Login
Melt TemperatureVisible After LoginVisible After Login
Moisture ContentVisible After LoginVisible After Login
Mold TemperatureVisible After LoginVisible After Login
Nozzle TemperatureVisible After LoginVisible After Login
Rear TemperatureVisible After LoginVisible After Login
Screw SpeedVisible After LoginVisible After Login