Hytrel® TPC-ET HTR8332 BK320

Hytrel TPC-ET HTR8332 BK320 is a medium-modulus thermoplastic polyester elastomer (TPC-ET) with a nominal hardness of 50D (45D at 15s). This black grade is pigmented with fine-particle carbon black and includes a general-purpose stabilizer. Designed for blow molding and other high-viscosity processing methods, it offers excellent toughness, resilience and flexibility at low temperatures while maintaining strong mechanical properties at elevated temperatures. Hytrel TPC-ET HTR8332 BK320 provides outstanding resistance to creep, impact and flex fatigue, superior tear strength, abrasion resistance and robust performance under heat and UV exposure. It also offers good resistance to oils, fuels, solvents and many industrial chemicals.

Key Features:

• Medium-modulus grade (50D)
• Black formulation with fine-particle carbon black
• High melt viscosity for blow molding
• Excellent toughness and impact strength
• Outstanding creep, tear and flex fatigue resistance
• Good resistance to oils, fuels, solvents and industrial chemicals
• Heat-stabilized and UV-stabilized
• Plasticizer-free with long-term property retention

Processing Form:

• Injection Molding
• Extrusion
• Blow Molding

Processing Notes:
Drying is recommended at 100°C for 2–4 hours to achieve a processing moisture content ≤0.08%. For injection molding: optimal melt temperature is 225°C (range 220–250°C), with mold temperature at 45°C (45–55°C). For extrusion: process at an optimal melt temperature of 200°C with moisture ≤0.06%. For blow molding: dry at 100–110°C for 3–4 hours to reach ≤0.02% moisture and process at a melt temperature of 225°C (range 220–240°C). Hytrel is incompatible with acetal and PVC. Please refer to molding and extrusion guidelines for detailed recommendations.