Hytrel® TPC-ET G4774

Hytrel TPC-ET G4774 is a medium-modulus thermoplastic polyester elastomer (TPC-ET) with a nominal hardness of 47D. It provides excellent toughness, resilience and flexibility at low temperatures, while maintaining strong retention of mechanical properties at elevated temperatures. The grade contains a discoloring stabilizer and is therefore not suited for light-colored finished products. Hytrel TPC-ET G4774 demonstrates outstanding resistance to creep, impact and flex fatigue, and can be processed using conventional thermoplastic techniques including injection molding and extrusion.

Key Features:

• Medium modulus with balanced flexibility
• Excellent toughness and high impact resistance
• Outstanding resistance to creep, tearing and flex fatigue
• Good chemical resistance to oils, fuels and industrial fluids
• Contains discoloring stabilizer (not suitable for light-colored parts)
• Light-stabilized for enhanced durability
• Plasticizer-free with long-term property retention

Processing Form:

• Injection Molding
• Film Extrusion
• Extrusion
• Sheet Extrusion
• Other Extrusion
• Casting
• Thermoforming

Processing Notes:
Drying is recommended at 100°C for 2–3 hours to reach a processing moisture content ≤0.08%. Hytrel TPC-ET G4774 has an optimal melt temperature of 240°C and a mold temperature of 45°C. For extrusion, drying at 100°C for 2–3 hours with a target moisture content ≤0.06% is recommended, with an optimal melt temperature of 225–240°C. Hytrel is incompatible with acet