Technical datasheet

Hytrel® 6356 BK203

Supplied byCelanese- Last Updated on May 12, 2026

Hytrel® 6356 BK203 by Celanese is a medium modulus, plasticizer-free thermoplastic polyester elastomer. It is light-, UV- and weather stabilized. It possesses excellent toughness, resilience, flexibility at low temperatures and good retention of properties at elevated temperatures.
  • It provides high resistance to creep, impact, flex fatigue, industrial chemicals, oils and solvents.
  • Hytrel® 6356 BK203 is suitable for processing by injection molding, thermoforming, casting, film-, sheet- and other extrusion.
  • It has good melt stability which enables the recycling of properly handled production waste.
  • Mostly used in automotive, fluid power, electrical/electronic, consumer goods, appliance, power tool, sporting goods, furniture, industrial and off-road transportation and equipment industry.
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Compliance

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Hytrel® 6356 BK203 properties

Flammibility properties

PropertiesValue & unitTest conditionTest method
Burning Rate0.0 Visible After LoginVisible After LoginVisible After Login

Mechanical properties

PropertiesValue & unitTest conditionTest method
10% 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
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
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 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
Poisson Ratio0.0 Visible After LoginVisible After LoginVisible After Login
Tear Strength, MD0.0 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
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 Shrinkage, Flow0.0 Visible After LoginVisible After LoginVisible After Login
Linear Mold Shrinkage, Transverse0.0 Visible After LoginVisible After LoginVisible After Login
Melt Mass-Flow Rate (MFR or MFI = Melt Flow Index or MI = Melt Index)0.0 Visible After LoginVisible After LoginVisible After Login
Melt Volume Flow Rate (MVR)0.0 Visible After LoginVisible After LoginVisible After Login

Thermal properties

PropertiesValue & unitTest conditionTest method
Brittleness Temperature0.0 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
Melting Point0.0 Visible After LoginVisible After LoginVisible After Login
Vicat Softening Temperature0.0 Visible After LoginVisible After LoginVisible After Login

Hytrel® 6356 BK203 Processing Guidelines

Extrusion Processing Guidelines

PropertiesValue & unitTest conditionTest method
Drying TemperatureVisible After LoginVisible After Login
Drying Time (Dehumidified Dryer)Visible After LoginVisible After Login
Melt TemperatureVisible After LoginVisible After Login
Moisture ContentVisible After LoginVisible After Login

Injection Processing Guidelines

PropertiesValue & unitTest conditionTest method
Drying Time (Dehumidified Dryer)Visible After LoginVisible After Login

Injection Molding Processing Guidelines

PropertiesValue & unitTest conditionTest method
Drying TemperatureVisible After LoginVisible After Login
Hold Pressure RangeVisible After LoginVisible After Login
Melt TemperatureVisible After LoginVisible After Login
Moisture ContentVisible After LoginVisible After Login
Mold TemperatureVisible After LoginVisible After Login

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