Radel / Polyphenylsulfone
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Polyphenylsulfone (PPSF or PPSU) is a type of moldable plastic often used in rapid prototyping and rapid manufacturing (direct digital manufacturing) applications. Polyphenylsulfone is a heat and chemical-resistant material. It is typically used in automotive and aerospace applications. It has virtually no melting point, due to its amorphous nature. It offers tensile strength up to 8000 psi. Its commercial name is RadelR.