Nylon(polyamide6) is a kind of engineering plastic with high crystalline and high melting point, with good mechanical properties, good electrical insulation, and chemical resistance properties. Known as one of the most abrasion resistant plastic, it has almost the same rigidity as metal, so it's an ideal replacement material of copper, cast zinc, steel, aluminum and other metal materials.  It is widely used in a variety of mechanical structures and spare parts. Compared to PA6, PA66 owns the higher hardness, rigidity, better abrasion resistance and heat deflection temperature. PA6 is more popular in the market.