PEI Plastic

PEI Plastic in Action: Success Stories and Challenges Across Industries

Materials play a crucial role in driving innovation and progress across industries. Whether it's civil engineering, aerospace, electronics, or manufacturing, identifying and leveraging the right materials is key to unlocking new capabilities and overcoming limitations. In recent decades, high-performance engineered plastics have emerged as game-changing materials that can meet the demanding requirements of various sectors. One such material that has made its mark is PEI Plastic.

PEI Plastic refers to Polyetherimide, a high-heat and chemically resistant thermoplastic with exceptional mechanical properties. With high strength, rigidity, and dimensional stability across a wide temperature range, PEI offers unique benefits that make it suitable for diverse functions and environments. This article will explore the rise of PEI Plastic across modern industries, discuss its advantages, highlight real-world success stories, examine challenges, and predict its future role as a transformative material.

Properties of polyetherimide (PEI)

The Rise of PEI Plastic in Modern Industries

For a long time, industries relied on conventional materials like metals, glass, and commodity plastics to manufacture components and products. However, these materials came with limitations in certain applications, which led to innovations in high-performance engineered plastics like PEI.

Compared to traditional materials, PEI Plastic brings superior mechanical, thermal, and chemical properties that enable new possibilities. Metals can corrode and glass can be brittle, while commodity plastics have lower strength and heat resistance. In contrast, PEI combines robust mechanical performance with resistance to heat, chemicals, and radiation.

This unique property profile has fueled the successful implementation of PEI across sectors like aerospace, automotive, electronics, industrial machinery, and medical devices. As engineers and manufacturers discover the advantages of PEI, its adoption continues to grow. The global PEI plastics market size was over USD 0.9 billion in 2021 and is projected to expand at a CAGR of over 9% from 2022 to 2030.

For instance, PEI is now commonly used to manufacture small precision parts in semiconductor fabrication equipment, replace metals in medical devices, develop new lightweight components in aviation, and enable emerging technologies like electric vehicles. In essence, PEI plastic enables real-world applications that would be difficult or impossible with conventional materials.

Applications of polyetherimide (PEI)

Benefits and Advantages of PEI Plastic

PEI plastic owes its rising popularity to a range of beneficial properties that address the needs of modern industries. Some of its key advantages include:

  • Outstanding heat resistance: With a glass transition temperature over 215°C and melting point over 380°C, PEI retains stiffness, strength, and form at high temperatures. This allows its use in applications like aerospace composites, automobile engine parts, and electronics.
  • Excellent chemical resistance: PEI resists a broad range of solvents, fuels, oils, and other chemicals. It can replace metal or plastic parts vulnerable to corrosion or swelling.
  • Low flammability and smoke emission: PEI is inherently flame resistant and emits little smoke when burned. This enhances safety in mass transit, aviation, and public venues.
  • Dimensionally stable: PEI exhibits very low creep and remains dimensionally stable over a wide temperature range of -40°C to 170°C. This enables precision components to retain accuracy.
  • High tensile strength: With typical tensile strength over 83 MPa, PEI plastic can withstand high mechanical loads in uses like structural brackets and pulleys.
  • Radiation resistance: PEI offers good resistance to gamma radiation, enabling uses in nuclear power, medicine, and food sterilization.
  • Good electrical properties: With a dielectric strength of 170-200 kV/mm, PEI works well as an electrical insulator and has low dissipation factor.
  • Easy to customize: PEI can be blended with fillers/reinforcements and engineered into compounds tailored for specific requirements.

These properties translate to tangible benefits across industries. For instance, PEI's heat resistance allows lighter PEI components to replace metals in aircraft and automobiles. Its chemical resistance enables PEI to withstand harsh industrial chemicals during machining and cleaning. Dimensional stability leads to accurate PEI molds for precision metal castings.

In essence, PEI plastic provides advantages in different sectors that enhance performance, safety, durability, and reliability.

polyetherimide (PEI) plastic

Case Studies: PEI Plastic's Success Stories

Many leading companies and industries have integrated PEI plastic into their products or manufacturing processes. The material has delivered impressive results, leading to its growing adoption. Here are some case studies and success stories of PEI plastic enabling breakthroughs:

Medical Devices

PEI offers an alternative to metals in medical devices like surgical tools and radiation therapy machines.

  • Dutch firm Staiman uses PEI plastic to 3D print sterilizable surgical instruments that match metal tools in precision and durability. PEI allows smoother surfaces than metals, reducing tissue trauma.
  • Varian Medical uses PEI in the rotating gantry of radiation therapy machines. PEI's radiation resistance and dimensional stability enable precise delivery of cancer radiation treatments.
  • Dentsply Sirona utilizes PEI's biocompatibility and high heat resistance to make autoclavable dental tools and trays replacing metal.

Aerospace and Aviation

Aerospace engineers leverage PEI's light weight and high strength for aircraft interiors and structures.

  • Boeing uses PEI as window frames in its 787 Dreamliner aircraft, saving weight over metals while resisting fire.
  • Airbus utilizes PEI plastic from Solvay in cabin monuments like galleys and lavatories to reduce weight and enhance fire safety.
  • NASA's Orion spacecraft has over 100 PEI plastic components, including valve covers, cable ties, propulsion system parts, and more.


PEI enables lighter, energy-efficient vehicles as well as electric cars through precision electrical components.

  • PEI plastic manifold end tanks in the Chevrolet Volt's battery cooling system withstand coolant temperatures up to 105°C.
  • Automakers like Toyota use PEI in the power control unit of hybrid and electric vehicles to offer electrical insulation for high-voltage circuity.
  • PEI's resistance to chemicals and fuels allows all-plastic fuel pump modules from companies like Denso to replace traditional metal pumps.


With its electric insulation and heat resistance, PEI is a vital material in electronics manufacturing and high-end components.

  • PEI plastic parts like wafer carriers, fasteners, and connectors are ubiquitous in semiconductor and LCD panel fabrication equipment where temperatures can reach over 150°C.
  • Asus used PEI plastic in the heat spreader of its high-performance Zephyrus G14 gaming laptops to replace metals and improve cooling.
PEI processed part

Challenges of Using PEI Plastic

Despite its many advantages, adopting PEI plastic also poses some unique challenges that industries need to address:

  • High cost: PEI remains considerably more expensive than mainstream plastics like ABS and nylon. This can deter wider adoption, especially in cost-sensitive industries.
  • Processing difficulties: PEI has a high melt viscosity that makes it difficult to mold using typical injection molding. This requires optimized machinery and process parameters.
  • Limited recyclability: While PEI can be ground and reprocessed, current infrastructure limits large-scale recycling. New advancements are needed to enable a circular economy.
  • Variability in grades: With custom fillers and grades, inconsistencies can arise in PEI's properties. Close collaboration with suppliers is essential.
  • Joining challenges: Welding and bonding of PEI plastic requires specialized methods that account for its unique chemistry. engineers need training to implement best practices.
  • Limited awareness: Lack of knowledge around PEI plastic's capabilities and advantages restricts its consideration over conventional materials. Promotion efforts are vital.

These kinds of challenges arise when using PEI plastic across manufacturing, design, and recycling. Innovations in materials science, processing, and engineering will be key to addressing limitations and enabling widespread adoption.

PEI plastic has proven itself as a transformative material across diverse industries ranging from aerospace to medicine. With an exceptional balance of heat resistance, strength, and chemical resistance, PEI empowers new designs and processes that enhance quality, durability, precision, and safety.

While still facing cost and manufacturing challenges, ongoing PEI plastic solutions from leading material suppliers and technology improvements will likely expand its adoption. In the future, we could see PEI being integral to electric vehicles, aircraft, consumer electronics, and medical devices. Innovative applications of this versatile engineered plastic will continue shaping many sectors.

Have you used or considered PEI plastic? What possibilities or challenges do you foresee with greater PEI adoption in your industry? Share your perspectives in the comments below.

PEI Plastic

To learn more about leveraging PEI plastic's benefits in your own products, contact us at for a consultation. Our team of polymer experts can help you implement PEI cost-effectively using custom materials, procuring, machining, and 3D printing services tailored for your industry's needs. Get in touch today to discuss how PEI plastic can empower your next design.

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