Polyamide 6.6 (PA 6.6) has a high melting point and a high abrasion resistance. Therefore, PA 6.6 is preferred in the manufacture of machine parts. Due to its extreme heat resistance and strength, polyamide 6.6 is the most commonly used thermoplastic material. PA 6.6 has good elasticity and high mechanical strength. It is used for the production of carpet fibers, electrical insulation elements, bearings, gears and conveyor belts.