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October 3, 2008

1 Min Read
PPA to replace metal


Evonik Industries (Marl, Germany) recently unveiled a new member of its high-heat portfolio called Vestamid HTplus, developed as a polymer solution for classic metal applications. The polyphthalamide (PPA)-based semicrystalline material is said to be stable at high temperatures and to offer an excellent price-performance ratio.

Evonik says that its new material has mechanical properties comparable to those of metal at up to a 50% lower unit cost. In addition to excellent chemical resistance to fuel systems, molded parts made from HTplus are said to provide high dimensional stability and excellent mechanical properties such as rigidity and tensile strength.

The PPA material is targeted at fluid handling and automotive applications, such as a base material for pump and filter-system housings. In addition to corrosion resistance, reduced component weight, greater design freedom, and a potential 50% reduction in component costs, HTplus can be economically processed on standard injection molding machines, and finished parts can generally be used without further downstream processing.

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