Materials Guide Polystyrene (PS) Polycarbonate (PC) Polypropylene (PP) Polycarbonate / ABS (Alloy) Polybutylene Terephthalate (PBT) Nylon 6/6 (PA 6/6) High Density Polyethylene (HDPE) Acrylonitrile Butadiene Styrene (ABS) Acrylic, General Purpose, Molded (PMMA) Acetal Homopolymer, Unreinforced (POM)