Duratron™ PI and Duratron™ PBI may sound too niche or cost-prohibitive for a customer request—until they solve a problem no other plastic will. With more than 30 years of experience supporting high-performance polymers, Mitsubishi Chemical Group (MCG) offers a trusted supply and expertise across both PI and PBI grades and shapes. We’re here to help you deliver what your customers need—especially when the application pushes materials to their limits.

MCG began supplying compression molded PI and PBI shapes after acquiring Alpha Precision Plastics in the late 1990s. In 2020, we added direct molding for near-net shapes, making PI more practical and more cost-effective for many jobs. Together, these two polymers help MCG offer the industry’s widest range of technical solutions for customers’ most difficult material challenges.

The MCG Difference

  • Compression-molded Duratron™ PI shapes supplied for more than 30 years.
  • Full range of PI and PBI grades—including near-net shapes—to help speed quoting and reduce machining time and scrap.
  • Multiple chemistries and filler options to meet strength, wear, or conductivity targets.
  • Consistent quality and a reliable, traceable supply chain.
  • Expertise across both specialty and melt-processible imides (like PEI and PAI), allowing cost-effective recommendations when extreme temperature resistance isn’t required.
  • Informed technical guidance from a team that supports the right material for each customer challenge.

Finding the Right Duratron™ PI Grade

Duratron™ PI shapes come in six standard compositions built on two Evonik polyimide chemistries (D and DU) known for exceptional strength retention at high temperatures. Choose from unfilled, 15% graphite-filled, or 40% graphite-filled options depending on wear or conductivity needs. Direct-formed (DF) and near-net (DFU) parts are also available for made-to-order applications.

D
DU
DF
DFU
Available shapes
Rod, tube, and plate.
Rod, tube, and plate.
Direct-formed parts and near-net shapes.
Direct-formed parts and near-net shapes.
Advantage
Best mechanical properties including high impact resistance.
Lower water absorption and improved oxidative stability at higher temperatures.
Lowest cost.
Lower water absorption and improved oxidative stability at higher temperatures.
Non reinforced
D7000
DU7000
DF7000
DFU7000
15% graphite
D7015G
DU7015G
DF7015G
DFU7015G
40% graphite
D7040G
DU7040G
DF7040G
DFU7040G

Add Duratron™ CU60 PBI to Your Lineup

In addition to 12 Duratron™ PI grades, MCG also offers Duratron™ CU60 PBI—the perfect complement for your most extreme customer challenges. It delivers:

  • Unmatched heat resistance with mechanical integrity that can persist at or even above 400°F (205°C).
  • Outstanding wear and load strength under continuous high-stress, high-temperature conditions.
  • Excellent vacuum performance, making it a trusted choice for semiconductor chamber parts, valve seats, and high-heat bushings and connectors.

Let’s make it simple.

Remember, not all polyimide chemistries and products are the same.
Contact us if you need help choosing the best chemistry or filler for the job.

Learn more

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