Alro logo Alro Steel was established in 1948 by Al and Robert Glick. Today, Alro is comprised of Alro Steel, Alro Metals, Alro Plastics and Alro Metals Outlet.

Alro Plastics Product: DURATRON® CU60 PBI

Size and Availability of Duratron® CU60 PBI:

Rod: All CU60 rod is made to order – contact Alro for minimums and delivery
- Diameters: .375”-1” (1/8” increments), 1”, 1.25”, 2”
- Lengths: 12" Lengths .375”-1.5” diameter, 2” comes in 6” lengths

Plate: All CU60 plate is made to order – contact Alro for minimums and delivery
-Thickness: - .5”-1” (1/8” increments), 1.25”-1.75” (.25” increments)
-Sheet sizes: 12” x 12”

Out of all the unfilled plastics available today Duratron® CU60 PBI is the highest performance engineering thermoplastic. It offers the highest heat resistance and mechanical property retention over 400°F of any unfilled plastic. In addition, it has better wear resistance and load carrying capabilities at extreme temperatures than any other engineering plastic either reinforced or unreinforced. Duratron® CU60 PBI is very "clean" in terms of ionic impurity. It does not outgas (except water). Duratron® CU60 PBI is a PBI (Polybenzimidazole) high performance engineering plastic that is ideal for extreme temperature applications. It has unique features that make it ideal for vacuum chamber applications in semiconductor manufacturing, thermal insulators. It is also typically used to make probe tip lenses in ultrasonic measuring equipment because it has excellent ultrasonic transparency. Other plastics in melt will not stick to CU60 so it is ideal as a contact seal or insulator bushing in the production of other plastics or molding equipment.

Features and Benefits of Duratron® CU60 PBI

  • Highest mechanical properties of any plastic above 400°F (204°C)
  • Highest heat deflection temperature 800°F (427°C), with a continuous service capability of 750°F (399°C) in inert environments, or 650°F (343°C) in air with short term exposure potential to 1,000°F (538°C)
  • Lowest coefficient of thermal expansion and highest compressive strength of all unfilled plastics

Common Applications for Duratron® CU60 PBI

  • High Heat Insulator Bushing
  • Electrical Connectors
  • Ball Valve Seats
  • Clamp Rings