PEEK (Polyetheretherketone)

Guangzhou IDEAL is a Chinese manufacturer and supplier specializing in PEEK polyetheretherketone products. Our PEEK series includes PEEK rods, plates, tubes, profile blanks, and custom PEEK parts. Custom sizes and filled PEEK grades are available on request.PEEK (polyetheretherketone) is an aromatic thermoplastic polymer composed of repeating units of polyaryletherketone (PEK), each containing two ether groups and one ketone group. It is a semi-crystalline, high-performance engineering thermoplastic with a well-defined melting point of 334°C, a narrow softening temperature range, and a glass transition temperature (Tg) of 143°C. Its maximum crystallinity is approximately 48%, typically ranging from 20% to 30%. Its density in the amorphous state is 1.265 g/cm³, while its density at maximum crystallinity is 1.32 g/cm³. PEEK is renowned for its exceptional mechanical properties, chemical resistance, thermal stability, and excellent electrical properties. It offers a long-term operating temperature range of 250°C to 260°C and can be temporarily extended to 300°C.

Key Takeaways

  • Material type: Semi-crystalline high-performance engineering thermoplastic.
  • Melting point: 334°C, with a glass transition temperature of 143°C.
  • Operating temperature: 250°C to 260°C continuous, up to 300°C short-term.
  • Key advantages: High-temperature resistance, chemical resistance, fatigue resistance, radiation resistance, self-lubricity, and dimensional stability.
  • Typical applications: Aerospace, electronics, nuclear power, oil and gas, medical implants, and food processing equipment.
334°C
Melting Point
143°C
Glass Transition (Tg)
260°C
Continuous Use
1.32
g/cm³ Density

PEEK polyetheretherketone products

Physical Properties of PEEK Polyetheretherketone

1. High-Temperature Resistance

PEEK has a glass transition temperature of 143°C and a melting point of 334°C. When filled with glass or carbon fiber, its heat deflection temperature reaches over 326°C. The UL-approved long-term operating temperature is 260°C.

2. Excellent Mechanical Properties

PEEK boasts exceptional strength and hardness, maintaining structural integrity even under repeated high loads, stresses, and impacts.

3. Corrosion Resistance

PEEK maintains high stability and corrosion resistance under the influence of many strong acids, bases, and other chemicals. This is due to its unique molecular structure, which contains aromatic rings, aliphatic alkane chains, and ketone groups formed at 240°C. These groups form a dense protective oxide film on the material's surface, preventing corrosion from external chemicals and enhancing its corrosion resistance.

4. Fatigue Resistance

PEEK's fatigue resistance stems from its excellent molecular structure and crystallization properties. Under long-term alternating stress, PEEK maintains excellent stability and reliability, making it less susceptible to fatigue failure.

5. Radiation Resistance

PEEK has excellent radiation resistance, maintaining its structure and properties when exposed to radiation such as gamma rays and X-rays.

6. Self-Lubricity

PEEK's self-lubricity is due to the presence of benzene rings and oxygen atoms in its molecular structure. This chemical structure enables PEEK to automatically form a lubricating film, reducing the coefficient of friction and improving wear resistance.

7. Wear Resistance

PEEK's excellent wear resistance is due to its high molecular weight, high hardness, and low coefficient of friction.

8. Good Dimensional Stability

PEEK's excellent dimensional stability is due to its extremely low water absorption and linear thermal expansion coefficient.

9. Excellent Electrical Properties

PEEK exhibits excellent electrical insulation properties over a wide temperature and humidity range. Its high volume and surface resistivity are making it increasingly important in the electronic information field.

Applications of PEEK Polyetheretherketone

Advanced Manufacturing

PEEK's excellent high-temperature resistance, outstanding mechanical properties, and dimensional stability make it widely used in advanced manufacturing.

Electronics & Electrical

PEEK parts' excellent electrical properties make them suitable for electronic component packaging, high-voltage switches, motors, and other equipment in the electronics and electrical industry.

Energy Sector

PEEK's high-temperature resistance, hydrolysis resistance, and radiation resistance have enabled cables, wires, coil bobbins, connectors, and valves made from it to be successfully used in energy sectors such as nuclear power plants and oil exploration and production.

Medical Field

Due to its biocompatibility and sterilization resistance, PEEK is used in the medical field to manufacture artificial bones, dental implants, endoscope components, dental scalers, and surgical tools.

Food & Beverage Industry

PEEK's excellent chemical stability and low moisture absorption rate make it safe for food contact materials. In the food industry, it can be used as components for food and beverage processing equipment.

PEEK Product Forms Available

Guangzhou IDEAL supplies PEEK in multiple forms to suit machining and end-use requirements. Custom dimensions, filled grades, and machined parts are available on request.

PEEK Rods
PEEK Plates
PEEK Tubes
Profile Blanks
Custom Parts

Frequently Asked Questions

Q: What is PEEK material used for?

A: PEEK is used in aerospace, electronics, nuclear power, oil and gas, medical implants, and food processing equipment, where high temperature, chemical resistance, and dimensional stability are required.

Q: What is the maximum operating temperature of PEEK?

A: PEEK has a continuous operating temperature of 250°C to 260°C and can be used short-term up to 300°C. Its melting point is 334°C.

Q: Is PEEK chemical resistant?

A: Yes. PEEK resists many strong acids, bases, and organic solvents. Its molecular structure forms a dense protective oxide film that limits chemical attack.

Q: Can PEEK be machined into custom parts?

A: Yes. PEEK rods, plates, tubes, and profile blanks can be machined into custom parts. Send your drawing or specification for a quotation.

Q: Is PEEK suitable for medical or food contact applications?

A: Yes. PEEK offers biocompatibility and sterilization resistance for medical implants, and its chemical stability and low moisture absorption make it suitable for food contact applications.

Need PEEK rods, plates, tubes, or custom machined parts?

Contact Guangzhou IDEAL

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  • As a professional China supplier, Ideal Plastic provides high-stability, industrial-grade PEEK Fasteners tailored for extreme working scenarios where traditional metal fasteners fail to operate stably. Covering pure, carbon-filled and glass-filled PEEK grades, these non-magnetic, insulating fasteners deliver superior high-temperature and corrosion resistance for semiconductor, chemical, medical and new energy precision equipment. Backed by 14+ years of engineering plastic manufacturing experience, the factory adopts standardized CNC machining and injection molding processes, with all products complying with REACH standards to ensure long-term operational stability of precision industrial assemblies.

  • As a reliable China manufacturer, Ideal Plastic supplies DIN912 / ISO 4762 PEEK Socket Head Cap Screws in neat, CF and GF grades. These non-magnetic, insulating fasteners resist heat and corrosion for semiconductor, chemical and new-energy precision equipment, with neat PEEK showing 8–12% stress relaxation per 1000h at 200℃.

  • PEEK Hex Head Screws, also referred to as PEEK hex bolts, hexagon head screws, and hex fasteners, are high-performance polymer fasteners manufactured in compliance with DIN933 and ISO4014 standards. These external hex head fasteners replace metal bolts in extreme working conditions where insulation, non-magnetic performance, corrosion resistance and high-temperature stability are required. GuangZhou Ideal, as a PEEK screw manufacturer, we supply virgin unfilled PEEK, carbon-filled PEEK and glass-filled PEEK grades with standard stock sizes and fully customizable CNC machining service.

  • PEEK Set Screws, also commonly called PEEK Grub Screws, are made from high-performance polyetheretherketone (PEEK) substrate and precision CNC machined. They are headless set screws that rely on threaded locking to achieve component positioning, anti-loosening, and fixation. Containing no metal, they offer both high strength and adaptability to special working conditions. Guangzhou Ideal, as a source factory, serves a wide range of industrial equipment customers, supporting both standard in-stock and non-standard customization.

  • PEEK Bolts, also known as PEEK Screws or polyetheretherketone fasteners, are non-metallic fasteners made from PEEK (polyetheretherketone) base stock. Compared with metal bolts, they provide excellent chemical resistance, electrical insulation, non-magnetic performance and low weight for equipment assembly in harsh operating environments. Available in virgin PEEK and reinforced grades, PEEK Bolts support different requirements for strength, wear resistance, temperature resistance and dimensional stability.

  • PEEK Screws from Ideal Plastic are high-temperature engineering plastic fasteners manufactured in China, offering chemical resistance, electrical insulation and non-magnetic performance. Neat PEEK supports continuous service temperatures up to 250°C. Available in pure, carbon-fiber, glass-fiber, antistatic and graphite/PTFE modified grades, with injection molding and CNC machining for standard and customized sizes. Suitable for semiconductor, medical, chemical, electronics and aerospace applications.

As a reliable PEEK (Polyetheretherketone) manufacturer and supplier in China, we have custom options and volume discount pricing. Please just send us a quotation!
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