Polypropylene (PP), available as both a Copolymer and Homopolymer, is a thermoplastic widely utilized for mechanical components in corrosive environments. Homopolymer polypropylene represents the standard grade, while copolymer polypropylene incorporates different levels of ethylene. Machining polypropylene can pose challenges, given its tendency to gall and melt, distinguishing it from more common plastics. The exceptional chemical resistance and fatigue strength of polypropylene render it particularly valuable for crafting flexible components and those exposed to corrosive surroundings.
Due to its low annealing temperature, machining can be challenging, demanding expertise from a proficient CNC machining partner for optimal results.