Polyamide 66 (PA66), commonly known as Nylon 66, is a high-performance engineering polymer known for its excellent mechanical strength, stiffness, and thermal stability. It is produced by polymerizing adipic acid and hexamethylenediamine. Nylon 66 offers superior wear resistance, low friction, and good chemical resistance, making it ideal for demanding applications in automotive, aerospace, electrical, and industrial sectors. It has a higher melting point (approximately 260°C) and better dimensional stability compared to Nylon 6, but it is also prone to moisture absorption, which can affect its mechanical properties. It is widely used in gears, bearings, housings, and high-temperature components.
