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Duratrone® PBI - polybenzimidazol

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Other material names PBI: PBI
Material group: 
Special plastics

Duratron® PBI is the highest performance engineering thermoplastic available today. It offers the highest heat resistance and mechanical property retention of any unfilled plastic It has better wear resistance and load carrying capabilities at extreme temperatures than any other reinforced or unreinforced engineering plastic.

As an unreinforced material, Duratron PBI is very "clean" in terms of ionic impurity and it does not outgas (except water). These characteristics make this material very attractive to semiconductor manufacturers for vacuum chamber applications. Duratron PBI has excellent ultrasonic transparency which makes it an ideal choice for parts such as probe tip lenses in ultrasonic measuring equipment.

Duratron PBI is also an excellent thermal insulator. Other plastics in melt do not stick to Duratron PBI. These characteristics make it ideal for contact seals and insulator bushings in plastic production and molding equipment.

Color of material: 
Typical applications: 
  • Bushings used in hot runner plastic injection molds
  • connectors exposed to temperatures over 205°C
  • Seats manufactured from PBI excel in high temperature fluid handling service
  • arts machined from PBI for gas plasma etching equipment last longer than polyimide parts due to reduced high energy erosion rates
The material is used in: 
Electrotechnical industry
Automobile industry
Chemical industry
Engineering industry
Steel industry
  • Highest mechanical properties of any plastic above 204°C
  • Highest heat deflection temperature 427°C, with a continuous service capability of 399°C in inert environments, or 343°C in air with short term exposure potential to 538°C
  • Lowest coefficient of thermal expansion and highest compressive strength of all unfilled plastics
Material availability: 
Material in stock at the manufacturer
Some trade names of the material
Celazole® PBI, Duratron® PBI
Trade names unprotected reg. mark: