PEI Engineering Plastic

Material: Polyetherimide (PEI)
Polymer Type: Amorphous engineering thermoplastic
Glass Transition Temperature (Tg): Up to 217°C
Heat Deflection Temperature (HDT): Up to 195°C
Long-Term Operating Temperature in Air: 180°C

Produkt Detail

High-Performance PEI Sheets, Rods, Profiles & Precision Machined Parts

PEI, or Polyetherimide, is a high-performance amorphous engineering thermoplastic designed for demanding applications requiring a combination of high-temperature stability, mechanical strength, dimensional accuracy, electrical insulation, chemical resistance and flame resistance.

Yozonetech supplies PEI engineering plastic in sheets, rods, profiles, semi-finished materials and precision machined components, with material options including PEI-Resin, PEI-ESD and PEI-GF30.

PEI is particularly suitable for components that must maintain stable dimensions and mechanical performance under elevated temperatures. Its low water absorption, hydrolysis resistance, electrical insulation, arc resistance and radiation resistance also make it valuable in electrical engineering, semiconductor equipment, aerospace, automotive, medical, food-processing and other specialized applications.

PEI Material Overview

PEI is an amorphous high-performance engineering plastic whose molecular structure provides a combination of thermal stability, mechanical strength, chemical resistance and electrical properties.

According to the supplied PEI technical brochure, PEI has a glass transition temperature of up to 217°C and a heat deflection temperature of up to 195°C. Its long-term operating temperature in air is specified at approximately 180°C.

These characteristics allow PEI components to maintain stable performance in high-temperature environments where dimensional accuracy, mechanical strength and electrical reliability are important.

PEI also offers good resistance to hydrolysis and can withstand repeated high-pressure steam sterilization. Combined with low water absorption and good dimensional stability, this makes PEI suitable for applications where moisture, temperature changes or sterilization cycles may affect conventional plastics.

Key Advantages of PEI

High-Temperature Stability: PEI can operate continuously at temperatures of approximately 180°C in air, according to the supplied technical material. Its high glass transition temperature and heat deflection temperature allow PEI components to maintain their shape and mechanical performance under elevated-temperature conditions.

Excellent Dimensional Stability: PEI has very good dimensional stability, with relatively small dimensional changes during manufacturing and service. This is valuable for precision mechanical components, semiconductor fixtures, electronic test fixtures, positioning plates and IC sockets.

High Mechanical Strength and Rigidity: PEI provides high strength and stiffness across a broad temperature range. PEI-GF30 can be considered when increased stiffness and dimensional stability are required.

Good Hydrolysis Resistance: PEI provides good resistance to hydrolysis and is suitable for applications involving moisture or repeated steam exposure.

Electrical Insulation & Arc Resistance: PEI has excellent electrical insulation characteristics and good arc resistance, making it suitable for electrical insulation components, high-temperature terminals, IC sockets and electronic fixtures.

Flame Resistance: PEI has inherent low flammability and flame-resistant characteristics, supporting use in electrical, electronic, automotive and aerospace applications.

Chemische Beständigkeit: PEI provides good resistance to a range of organic solvents, acids and alkaline chemicals. Actual compatibility should be evaluated against the specific chemical, concentration, temperature and exposure time.

Radiation Resistance: PEI offers strong resistance to high-energy radiation, including Gamma radiation and X-rays.

Physiological Inertness: The supplied PEI material information identifies physiological inertness and suitability for selected food-contact applications.

PEI Product Forms

PEI Sheet — suitable for CNC machining into precision plates, fixtures, electrical insulation components, positioning plates, structural parts and customized industrial components.
PEI Rod — suitable for CNC turning, drilling, milling and other machining operations.
PEI Profile — custom profiles can be supplied according to specified cross-sections and dimensions.
PEI Machined Parts — customized components manufactured according to customer drawings or samples.

Examples include PEI battery boxes, test fixtures, handles, sterilization cassettes, insert terminal positioning plates, electrical engineering components, electronic high-temperature components and automotive components.

PEI Material Grades

PEI-Resin: Virgin PEI provides the fundamental performance characteristics of polyetherimide, including high-temperature stability, mechanical strength, dimensional stability, electrical insulation and chemical resistance. Density specified in the brochure: 1.27.

PEI-ESD: Designed for applications requiring controlled electrostatic performance, particularly semiconductor equipment, electronic manufacturing and ESD-sensitive fixtures. Density specified in the brochure: 1.42.

PEI-GF30: Approximately 30% glass-fiber reinforced PEI for higher stiffness and dimensional stability. Density specified in the brochure: 1.50.

PEI Technical Properties

Eigentum	Technical Data from Product Brochure
Material	Polyetherimide (PEI)
Polymer Type	Amorphous engineering thermoplastic
Glass Transition Temperature (Tg)	Up to 217°C
Heat Deflection Temperature (HDT)	Up to 195°C
Long-Term Operating Temperature in Air	180°C
Hydrolysis Resistance	Gut
Steam Sterilization	Suitable for repeated high-pressure steam sterilization
Dimensional Stability	Ausgezeichnet
Water Absorption	Niedrig
Mechanische Festigkeit	Hoch
Härte	High over a broad temperature range
Physiological Properties	Physiologically inert
Radiation Resistance	Excellent resistance to Gamma and X-rays
Flammability	Low inherent flammability
Elektrische Isolierung	Ausgezeichnet
Dielektrizitätskonstante	Niedrig
Arc Resistance	Gut

Technical note: Values represent information provided in the supplied PEI product brochure. Specific material grades may have different physical, thermal and mechanical properties.

PEI Plate & Rod Specifications

The supplied product brochure provides dimensional specifications for PEI-Resin, PEI-ESD and PEI-GF30.

PEI Rod Specification

Durchmesser (mm)	Tolerance (mm)	PEI-Resin Dichte	PEI-Resin Weight	PEI-ESD Dichte	PEI-ESD Weight	PEI-GF30 Dichte	PEI-GF30 Weight
6	+0.2 / +0.6	1.27	0.04	1.42	0.05	1.50	0.05
8	+0.5 / +0.8	1.27	0.08	1.42	0.088	1.50	0.09
10	+0.4 / +0.6	1.27	0.12	1.42	0.13	1.50	0.13
12	+0.3 / +0.9	1.27	0.17	1.42	0.19	1.50	0.19
15	+0.6 / +1.1	1.27	0.24	1.42	0.27	1.50	0.28
20	+0.3 / +1.0	1.27	0.43	1.42	0.46	1.50	0.49
25	+0.3 / +1.0	1.27	0.72	1.42	0.81	1.50	0.86
30	+0.4 / +1.0	1.27	1.01	1.42	1.11	1.50	1.17
35	+0.2 / +1.0	1.27	1.40	1.42	1.53	1.50	1.61
40	+0.2 / +0.8	1.27	1.88	1.42	2.06	1.50	2.17
45	+0.3 / +1.5	1.27	2.33	1.42	2.43	1.50	2.58
50	+0.4 / +2.0	1.27	2.72	1.42	2.98	1.50	3.14
60	+0.8 / +2.0	1.27	4.08	1.42	4.28	1.50	4.52
70	+0.5 / +3.0	1.27	5.54	1.42	5.82	1.50	6.15
75	+0.5 / +3.0	1.27	6.00	1.42	6.60	1.50	6.99
80	+0.5 / +3.0	1.27	7.21	1.42	8.00	1.50	8.07
85	+0.5 / +2.0	1.27	7.35	1.42	8.42	1.50	8.90
90	+0.4 / +3.0	1.27	8.99	1.42	9.54	1.50	10.10
100	+0.3 / +2.3	1.27	11.05	1.42	11.80	1.50	12.40
110	+0.6 / +3.0	1.27	13.27	1.42	14.50	1.50	15.30
120	+0.5 / +3.0	1.27	15.70	1.42	17.20	1.50	18.10
130	+0.5 / +3.0	1.27	18.60	1.42	20.10	1.50	21.20
140	+0.5 / +3.0	1.27	21.50	1.42	23.10	1.50	24.40
150	+0.5 / +3.0	1.27	24.00	1.42	26.40	1.50	27.90
160	+0.5 / +3.0	1.27	28.20	1.42	30.20	1.50	31.90
180	+0.5 / +3.0	1.27	34.60	1.42	38.10	1.50	40.20

PEI Sheet Specification

Dicke (mm)	Tolerance (mm)	PEI-Resin Dichte	PEI-Resin Weight	PEI-ESD Dichte	PEI-ESD Weight	PEI-GF30 Dichte	PEI-GF30 Weight
4	+0.3 / +0.5	1.27	4.3	1.42	4.9	1.50	5.1
6	+0.2 / +0.7	1.27	6.7	1.42	7.4	1.50	7.8
8	+0.2 / +0.7	1.27	8.9	1.42	9.9	1.50	10.5
10	+0.2 / +1.2	1.27	10.7	1.42	11.8	1.50	12.5
12	+0.3 / +1.5	1.27	13.0	1.42	14.5	1.50	15.3
15	+0.3 / +1.5	1.27	16.0	1.42	17.8	1.50	18.8
20	+0.3 / +1.5	1.27	21.6	1.42	23.4	1.50	24.7
25	+0.3 / +1.5	1.27	25.9	1.42	27.6	1.50	29.1
30	+0.5 / +2.5	1.27	31.0	1.42	33.6	1.50	35.5
35	+0.5 / +2.5	1.27	36.7	1.42	38.5	1.50	40.9
40	+0.5 / +2.5	1.27	42.5	1.42	44.6	1.50	48.2
45	+0.5 / +2.5	1.27	48.3	1.42	52.5	1.50	55.4
50	+0.5 / +2.5	1.27	53.7	1.42	56.8	1.50	60.1
60	+0.5 / +3.5	1.27	63.2	1.42	—	—	—
80	+0.5 / +5.0	1.27	81.6	1.42	—	—	—
100	+0.5 / +5.0	1.27	102.7	1.42	—	—	—
120	+0.5 / +5.0	1.27	122.8	1.42	—	—	—

Note: The original brochure does not provide PEI-ESD and PEI-GF30 weight values for the 60–120 mm rows shown above, so these values are intentionally left blank rather than estimated.

PEI Processing & Manufacturing

Spritzgießen: Suitable for producing complex PEI components with repeatable dimensions and consistent production quality.

Extrusion: Can be used to manufacture PEI semi-finished materials and continuous profiles.

Compression Molding: Provides another processing option for specific PEI components and production requirements.

CNC Machining: PEI sheets, rods and profiles can be precision machined into finished components by CNC turning, milling, drilling, cutting, grinding and profile machining.

During PEI processing, temperature, pressure and processing time should be controlled according to the required product shape, dimensions and performance.

PEI Applications

Electrical Engineering Components: Electrical insulation components, high-temperature terminals, switch components, electronic packaging components, electrical fixtures and insulating structural parts.

Food Industry Components: Food processing equipment, conveyor components, storage components, food packaging equipment and precision mechanical parts. Final food-contact compliance should be confirmed for the selected grade.

Aerospace Components: Aircraft structural and interior components, aerospace fixtures and lightweight precision components.

Hydrogen Energy Components: Hydrogen energy connectors, electrolyzer components, sealing components and selected hydrogen-system components. Compatibility should be evaluated against actual pressure, temperature and hydrogen service conditions.

Electronic High-Temperature Components: IC sockets, high-temperature terminals, FPCB components, electronic fixtures, connector components and terminal positioning plates.

Automotive Components: Automotive machined parts, high-temperature electrical components, positioning components, insulating parts and precision mechanical components.

Medical Equipment: Sterilization cassettes, medical fixtures, instrument components, precision holders and medical equipment components.

PEI Component Selection Guide

For High-Temperature Applications: Consider PEI when the component must maintain dimensional and mechanical stability at elevated operating temperatures.

For Precision Components: Virgin PEI is suitable for many precision applications where dimensional stability is important.

For Higher Mechanical Stiffness: Consider PEI-GF30 when increased stiffness and dimensional stability are required.

For ESD-Controlled Environments: Consider PEI-ESD for semiconductor, electronics and precision manufacturing applications where electrostatic behavior is important.

For Steam Sterilization: PEI is suitable for selected applications involving repeated high-pressure steam sterilization due to its hydrolysis resistance.

For Electrical Applications: PEI is a strong candidate when high-temperature electrical insulation, arc resistance and dimensional stability are required.

PEI Resin vs PEI-ESD vs PEI-GF30

Material	Main Advantage	Typical Application
PEI-Resin	Balanced thermal, mechanical and electrical performance	Precision machined parts, electrical components, general engineering
PEI-ESD	Controlled electrostatic performance	Semiconductor, electronics, ESD-sensitive fixtures
PEI-GF30	Higher stiffness and dimensional stability	Structural components, tooling, automotive and mechanical parts

Custom PEI Machined Parts

Yozonetech can provide PEI components manufactured according to customer drawings, dimensions or samples.

Custom PEI Sheets
Custom PEI Rods
Cut-to-Size PEI
CNC Machined PEI Parts
PEI-GF30 Components
PEI-ESD Components
Precision Fixtures
Positioning Plates
Electrical Insulation Parts
Semiconductor Components
OEM / ODM Production

For a customized PEI component, customers can provide drawing, dimensions, material grade, quantity, operating temperature, application and tolerance requirements.

Why Choose Yozonetech for PEI?

Material Options — PEI-Resin, PEI-ESD and PEI-GF30.
Multiple Product Forms — PEI sheet, rod, profile and customized machined parts.
Drawing-Based Production — Customized PEI components can be manufactured according to customer drawings and dimensional requirements.
Application-Oriented Material Selection — Material selection can be evaluated according to temperature, load, dimensional stability, electrical performance and operating environment.

FAQ

What is PEI engineering plastic?

PEI, or Polyetherimide, is a high-performance amorphous engineering thermoplastic known for high-temperature stability, mechanical strength, dimensional stability, electrical insulation, chemical resistance and flame resistance.

What is the Tg of PEI?

The supplied technical brochure specifies a glass transition temperature of up to 217°C.

What is the HDT of PEI?

The heat deflection temperature is specified at up to 195°C.

What is the long-term operating temperature of PEI?

The supplied brochure specifies a long-term operating temperature in air of approximately 180°C.

Does PEI absorb water?

PEI has relatively low water absorption and good dimensional stability.

Can PEI withstand steam sterilization?

Yes. The supplied material information identifies good hydrolysis resistance and suitability for repeated high-pressure steam sterilization.

Is PEI electrically insulating?

Yes. PEI provides excellent electrical insulation, low dielectric constant and good arc resistance.

What is PEI-GF30?

PEI-GF30 is approximately 30% glass-fiber reinforced PEI used where higher stiffness and dimensional stability are required.

What is PEI-ESD?

PEI-ESD is a functional PEI grade intended for applications requiring controlled electrostatic behavior.

Can PEI be CNC machined?

Yes. PEI sheets, rods and profiles can be machined into customized precision components.

What PEI sizes are available?

The supplied brochure lists PEI rods from 6 mm to 180 mm diameter and PEI sheets from 4 mm to 120 mm thickness, with different tolerances depending on size.

Custom PEI Engineering Plastic Solutions

PEI is not simply a high-temperature plastic. Its value comes from the combination of high-temperature stability, dimensional accuracy, mechanical strength, electrical insulation, hydrolysis resistance, low water absorption, flame resistance and radiation resistance.

Whether you require PEI sheet, PEI rod, PEI-GF30, PEI-ESD, custom profiles or CNC-machined PEI components, Yozonetech can provide material and processing solutions according to your application.

Send us your material grade, dimensions, quantity, application and drawing for technical evaluation and quotation.