PBIPolybenzimidazole
Duratron CU60 PBI is considered the highest-performing engineering thermoplastic available today. It can serve as the ultimate problem solver where other plastics fall short. At 200℃ it retains better temperature resistance and mechanical properties than all basic thermoplastic grades, and it is extremely clean in terms of ionic purity and does not outgas (except water), which makes it highly valued in high-tech industries such as semiconductors and aerospace.
- Continuous service temp. (air)
- 310℃
- Short-term service temp.
- 500℃
Features
Highest continuous service temperature
The highest continuous service temperature in air of all thermoplastics: 310℃ continuously and up to 500℃ for short periods.
Strength over a wide temperature range
Maintains excellent mechanical strength, stiffness and creep resistance over a wide temperature range.
Outstanding wear and friction properties
Very low linear thermal expansion
Resistance to high-energy radiation
Excellent resistance to gamma rays and X-rays.
Inherently low flammability
High ionic purity
Electrical insulation and dielectric properties
Properties
| Property | Unit | Test method | Value |
|---|---|---|---|
| Continuous service temperature (in air) | ℃ | — | 310 |
| Short-term service temperature | ℃ | — | 500 |
| Density | g/cm³ | — | Pending |
| Tensile strength | MPa | — | Pending |
| Flexural modulus | MPa | — | Pending |
| Heat deflection temperature | ℃ | — | Pending |
| Water absorption | % | — | Pending |
Typical values; they vary by grade and form. Rows marked “Pending” are still being verified — ask for them with your quote request if you need them.
Applications
- Pump components
- Valve seats for high-tech valves
- Bearings
- Rollers
- High-temperature insulators
- Critical components in the semiconductor and aerospace industries
Technical notes
Duratron CU60 PBI is typically used in critical components to reduce maintenance costs and secure valuable production uptime, replacing metals and ceramics in pump components, valve seats, bearings, rollers and high-temperature insulators.
Tight-tolerance fabricated parts should be stored in sealed containers (typically polybags with desiccant) to prevent dimensional changes from moisture absorption.
Parts that will be rapidly exposed to temperatures above 200℃ should be dried before use or kept dry to prevent distortion from thermal shock.
Frequently asked questions
What temperature can PBI withstand?
Duratron CU60 PBI can be used continuously in air at 310℃ and withstands up to 500℃ for short periods, the highest continuous service temperature of all thermoplastics.
How should PBI parts be stored?
Moisture absorption can change dimensions, so precision parts should be kept in sealed containers such as polybags with desiccant. Parts rapidly exposed to over 200℃ should be dried before use or kept dry to avoid distortion from thermal shock.
Is PBI suitable for semiconductor equipment?
Yes. It is extremely clean in terms of ionic purity and does not outgas except water, so it is highly valued in high-tech industries such as semiconductors and aerospace.
What parts is PBI used for?
It is used for critical components where maintenance costs and uptime matter, replacing metals and ceramics in pump components, valve seats, bearings, rollers and high-temperature insulators.
