DuPont Hytrel® 4056 TPEE for Films, Tubes, and Profiles

01 | Product Overview

Hytrel® 4056 is a high-performance thermoplastic polyester elastomer (TPEE) developed by DuPont. It is made of the TPC-ET material system and combines the flexibility of rubber with the strength of engineering plastics. It is specially designed for various molding methods and complex structural designs. Its typical characteristics include:

  ・Material type: TPC-ET thermoplastic polyester elastomer
  ・Appearance and form: Granular, natural color
  ・Processing methods: Supports multiple methods such as injection molding, extrusion, calendering,   thermoforming, casting, and coating
  ・Material properties: Suitable for various application forms such as films, profiles, pipes, and plates
  ・Additive system: Equipped with UV inhibitors to enhance outdoor weather resistance
  ・Flame retardant grade: Complies with UL 94 HB, suitable for use in non-critical electrical components

Hytrel® 4056

02 | Performance advantages

Hytrel® 4056 achieves a good balance between flexibility and mechanical properties, demonstrating the following significant advantages:

High flexibility and mechanical strength coexist

  ・It has strong tear resistance and impact resistance, and remains flexible at low temperatures
  ・The tensile strength can reach up to 26 MPa, making it suitable for dynamic load scenarios
  ・It has excellent fatigue resistance and is suitable for long-cycle bending and dynamic usage requirements

Stable thermal performance

  ・The melting temperature reaches 152°C, making it suitable for medium and high-temperature processing techniques
  ・The heat distortion temperature is 48°C (0.45MPa), suitable for general heat load applications
  ・The embrittlement temperature is as low as -97°C, and it remains soft even in extremely cold environments

Excellent dimensional and wear resistance control

  ・The linear expansion coefficient is low, and the flow direction is 1.3E-4 cm/cm/°C
  ・The wear volume is only 200 mm³, and it is far superior to ordinary elastomers in terms of wear resistance
  ・Low water absorption rate and good dimensional stability, suitable for processing precision components

It has outstanding electrical insulation capacity

  ・The volume resistivity is as high as 7E+12 Ω·cm
  ・The dielectric strength is 18 KV/mm, which can meet the usage requirements of basic electrical structural components
  ・The CTI value is as high as 600V, and it has excellent arc resistance

03 | Application fields

With its comprehensive performance, Hytrel® 4056 is widely used in multiple industries that have high requirements for performance and process, especially excelling in the following fields

Automobile manufacturing

  ・Transmission system sheaths, bellows, flexible seals
  ・CVJ dust covers, hose fittings, sound insulation connectors

Consumer electronics and sports products

  ・Buffer protective layer for wearable devices
  ・Flexible connecting parts, impact-resistant housing

Industry and mechanical equipment

  ・Industrial hoses, conveyor belt connectors
  ・Shock-absorbing gaskets, dynamic connection modules, seals

Medical and outdoor products

  ・Portable medical equipment casing
  ・Ski and mountaineering equipment cushioning pads

04 | Overview of material physical property parameters

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05 | Advantages in processing and usage

Hytrel® 4056 not only offers excellent performance but also demonstrates excellent operability during production and processing:

  ・Excellent flowability and fast filling make it suitable for complex mold designs

  ・Smooth demolding improves molding efficiency and reduces mold wear

  ・Strong compatibility, compatible with hot runner systems, suitable for automated production

  ・Excellent recyclability, allowing for repeated processing under controlled conditions

06 | Technical Support and Supply Services

As a professional raw material provider, DuPont and its authorized distributors can offer the following service support to customers:

  ・Provide TDS (Technical Data Sheet), MSDS, safety parameters and recommended process Settings

  ・Assist in adjusting the injection molding temperature, drying conditions and mold temperature control

  ・We provide samples and small-batch test materials, and support early verification

  ・Customized packaging and labeling services, adapted to the global supply chain system

07 | Recommended Similar Materials

08 | Conclusion

Hytrel® 4056, as a TPEE material with a high balance between flexibility and strength, has been widely verified in multiple industries for its excellent mechanical properties, processing convenience and environmental stability. It is particularly suitable for scenarios with high dynamic loads, complex structures and long-term usage requirements, and is an ideal material choice for achieving high-performance, lightweight and reliable manufacturing.

If you need more product information, samples or quotations, please feel free to contact us to obtain customized solution support.

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