Hytrel® 7246 is a high‑modulus polyester elastomer with 72D hardness, offering detailed mechanical, thermal, electrical properties and processing guidelines.
Hytrel® 7246 is a high‑modulus polyester elastomer (570 MPa) with a nominal durometer hardness of 72D. It contains non‑discoloring antioxidants and can be processed by conventional thermoplastic methods such as injection molding and extrusion. The material is suitable for automotive and other engineering applications, with cautions for medical use.
The datasheet provides extensive property tables covering mechanical strength, thermal limits, electrical performance, flammability, abrasion resistance, water absorption, and recommended processing conditions. Safety and handling notes, as well as contact information for DuPont technical support, are also included.
| Tensile Strength at Break | 45.8 MPa (6.7 kpsi) |
|---|---|
| Elongation at Break | 360 % |
| Flexural Modulus | 570 MPa (83 kpsi) |
| Melting Point | 218 °C (424 °F) |
| Vicat Softening Point | 207 °C (405 °F) |
| Melt Flow Rate (240 °C) | 2.16 g/10 min |
| Processing Melt Temperature Range | 240‑260 °C (464‑500 °F) |
| Mold Temperature Range | <45 °C (<113 °F) |
| UL94 Flammability Rating | HB |
| Durometer Hardness (Shore D) | 72 |
| Water Absorption (24 h immersion) | 0.3 % |
| Specific Gravity | 1.25 |
Hytrel® 7246 has a durometer hardness of 72 D.
The recommended processing melt temperature range is 240 °C to 260 °C.
Hytrel® 7246 is rated HB under UL94.
The tensile strength at break is 45.8 MPa (6.7 kpsi).