Hytrel® TPC-ET HTR8908ECO-B 452 BK320

Hytrel TPC-ET HTR8908ECO-B 452 BK320 is a soft-hardness, halogen-free flame-retardant thermoplastic polyester elastomer (TPC-ET) with a nominal hardness of 30D. This black grade provides strong flammability performance, meeting V-2 at 1.6 mm and V-1 at 3.2 mm according to IEC 60695-11-10. As part of the Hytrel ECO-B family, it is partially produced using bio-feedstock derived from waste under the ISCC Plus mass balance system, reducing fossil resource use and lifecycle greenhouse gas emissions. The material offers excellent toughness, resilience and flexibility at low temperatures, with very high impact resistance even down to –40°C. Hytrel TPC-ET HTR8908ECO-B 452 BK320 shows outstanding resistance to creep, tear and flex fatigue and provides good resistance to oils, fuels, solvents and many industrial fluids. It is heat-stabilized, light-stabilized and well-suited for thin-wall wire & cable extrusion.

Key Features:

• Halogen-free flame-retardant formulation
• Bio-based ECO-B grade (ISCC Plus mass balance)
• IEC 60695 performance: V-2 at 1.6 mm, V-1 at 3.2 mm
• Soft hardness (30D) with high flexibility
• Exceptional impact resistance down to –40°C
• Outstanding creep, tear and flex fatigue resistance
• Good resistance to oils, fuels, solvents and industrial chemicals
• Black, heat-stabilized and light-stabilized grade
• Suitable for thin-wall wire & cable extrusion
• Plasticizer-free with long-term property retention

Processing Form:

• Injection Molding
• Extrusion
• Other Extrusion
• Calendering
• Casting
• Thermoforming
• Extrusion – Wire & Cable

Processing Notes:
Drying is recommended at 100°C for 2–3 hours to achieve a processing moisture content ≤0.08%. Hytrel TPC-ET HTR8908ECO-B 452 BK320 has an optimal melt temperature of 215°C (range 200–230°C) and a mold temperature of 30–40°C. For extrusion, dry at 70–90°C for 2–3 hours to reach ≤0.06% moisture and process at a melt temperature range of 200–235°C. Hytrel is incompatible with acetal and PVC. Please refer to the molding and extrusion guidelines for detailed recommendations.