• 1. Amorphous thermoplastic resin with amber transparency
  • 2. Low colorability
  • 3. High RTI of 180℃
  • 4. Natural with high HDT/A (ISO 75) of 205℃
  • 5. Excellent electrical properties
  • 6. Good chemical resistance and mechanical property
  • 7. Good UV-light resistance and weatherability
  • 8. Flame resistance without the use of additives

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Overview :

Polyetherimide (PEI) is an amorphous, amber transparent, non-crystalline high-performance engineering thermoplastic with exceptional qualities. It offers high strength and rigidity at elevated temperatures, long-term heat resistance, dimensional stability, and good electrical properties. As an amorphous, high-temperature resin, PEI is inherently flame retardant and exhibits resistance to various chemicals. Its creep resistance allows for replacing metals in structural applications, and electrical properties remain stable under variable conditions. PEI's versatility makes it valuable in industries such as aerospace, automotive, and electronics.

Download PEI Data Sheet

Tuntun Plastic specializes in various production processes for Polyetherimide (PEI) material, providing a comprehensive range of options. Our offerings include PEI sheets, PEI rods and PEI Board CF Filled. With expertise in machining, injection molding, and custom profiles, Tuntun has a proven track record in delivering precision and versatility. Whether the need is for finely machined, unique parts or high-volume production, Tuntun Plastic is committed to finding the most effective solution for PEI applications.

Polyetherimide Specifications and Properties

Properties Test Method Test Conditions Unit Values
Density ASTM D792 / g/cm3 1.27
Heat Distortion Temp. ASTM D648 1.8MPa, 6.4 mm 201
Melt Flow Rate ASTM D1238 337℃, 6.6kg g/10min 9
Tensile Strength ASTM D638 5mm/min MPa 110
Tensile Modulus ASTM D638 5mm/min MPa 3600
Flexural Strength ASTM D790 2.6mm/min MPa 165
Flexural Modulus ASTM D790 2.6mm/min MPa 3500
Impact Strength, Notched ASTM D256 23℃ J/m 53
Flammability UL94 1.5mm Class V-0

Typical Application

Pei resins have high heat, flame, and solvent resistance, making them perfect materials for medical, chemical instruments, automotive, aerospace, and food production industries.

IC Tray

Individually Ventilated Cages

PEI Boards and Rods


What is PEI material?

Polyetherimide (PEI) is an amorphous thermoplastic known for its high mechanical strength and rigidity. It is commonly recognized by the trade name ULTEMTM plastic or ULTEMTM material.


What is polyetherimide used for?

Polyetherimide (PEI) is a versatile thermoplastic used in aerospace, automotive, and electronics for its high strength, heat resistance, and electrical properties. It finds applications in medical devices, membrane technology, and industrial components, offering biocompatibility and flame retardancy.


Whether to provide the sample and the delivery time of the sample ?

We can provide a sample of 3kg in stock within 5 working days.


Can you provide customized services?

Yes, all our raw materials can be customized, such as adding glass fiber, carbon fiber and other fillers, or making boards and rods of different sizes. Click for details to learn more>>


Can polyetherimide be 3D printed?

Yes, Polyetherimide can be 3D printed. PEI is known for its excellent thermal and mechanical properties, making it a suitable material for 3D printing, especially in highly demanding applications. It is used in resin form for creating 3D printed, high-strength prototypes and parts.


Can you provide the quality certificate of the products?

Of course. All of our products are proven to be perfectly compliant with FDA, REACH and RoHS safety regulatory, and so on. If you need, you can contact us to check the relevant documents.


Is polyetherimide expensive?

The cost of Polyetherimide (PEI) varies depending on factors such as grade, form (sheets, rods, filaments), and supplier. Generally considered a high-performance engineering thermoplastic, PEI tends to be more expensive than common plastics. The unique combination of properties, including high mechanical strength and thermal resistance, contributes to its higher cost. Specific pricing details would depend on the source and market conditions at the time of purchase. It's advisable to consult suppliers or manufacturers for current and specific pricing information.


Are you manufacturer or trading company?

We are integral part of industry and trade. Both the agency of some products, but also a factory for product development and production.


About bulk order leading time?

It will take about 15~30 working days from order confirmation to production completion. Specific communication can be coordinated to the time acceptable to both side.


How to Process PEI?

Unlike most other polyimides, PEI is suitable for processing by typical methods such as injection molding, extrusion, thermoforming, and compression molding.




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