German plastics processor Ensinger (Nufringen; www.ensinger-online.com) has introduced a range of polyamide-imide (PAI) semi-finished goods. The modified type “Tecator” 5031 PVX contains graphite and PTFE for use in applications where moving surfaces come into contact with each other. The additives give the material excellent abrasion resistance as well as good sliding and friction properties. The material complements the high-temperature plastic “Tecator” 5013. The materials can be used in both cryogenic and high temperatures. Continuous working temperature is 250°C, but the thermoplastic can also be used short-term at 270°C.

The thermal resistance under load is higher than that of PEEK, as is the toughness, Ensinger said. The material offers excellent mechanical strength and dimensional stability. “Tecator” has good chemical resistance, is resistant to conventional solvents, lubricants and fuels and can be used in contact with many different acids. In addition, polyamide-imide possesses high resistance against high-energy radiation. The plastic is self-extinguishing to UL 94 V-0 classification. Ensinger supplies the yellow-brown natural type “Tecator 5013” and the black slide-modified type 5031 PVX in the form of plates and cylindrical rods. Both material types are easy to machine, and are used in the manufacture of precision parts, for example in automobile construction, aerospace and in electronics/semi-conductor technology.