PEEK

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Key Characteristics of PEEK

PEEK is a high-performance thermoplastic known for its exceptional strength, thermal stability, and chemical resistance.

 

It is produced through the polymerization of polyether ether ketone resin, resulting in a material that maintains its integrity under extreme temperatures and mechanical stress. PEEK offers excellent dimensional stability and resistance to wear, radiation, and hydrolysis, making it suitable for demanding applications where reliability is critical.

 

This material performs exceptionally well in high-temperature and chemically aggressive environments and provides outstanding electrical insulation properties. Common uses include aerospace components, medical devices, and semiconductor manufacturing equipment.

 

PEEK is a premium choice for industries that require consistent, high-performance materials with exceptional endurance and long-term stability.

How PEEK is Used

Aerospace Components: PEEK’s exceptional strength and heat resistance make it ideal for structural and engine components exposed to high temperatures and stress.

 

Medical Implants: Its biocompatibility and sterilization resistance allow PEEK to be used in surgical instruments and long-term implants.

 

Semiconductor Equipment: PEEK’s dimensional stability and chemical resistance suit wafer-handling tools and chip-processing parts.

 

Electrical Connectors: Its insulation properties and mechanical durability make it reliable for high-performance electrical connectors.

 

Pump and Valve Parts: PEEK’s resistance to wear and chemicals ensures reliable operation in demanding fluid-handling systems.

Technical Specs for PEEK

PEEK maintains exceptional mechanical strength and stiffness even at elevated temperatures, making it suitable for structural and load-bearing applications.

Tensile Strength: ~90–100 MPa (unfilled)

Flexural Strength: ~140 MPa

Tensile Modulus (Elastic Modulus): ~3.6–4.0 GPa

Elongation at Break: ~20% (unfilled), lower for reinforced grades

Impact Strength (Notched Izod): ~4–5 kJ/m²

Melting Point: ~343°C (650°F)

Glass Transition Temperature (Tg): ~143°C (290°F)

Continuous Use Temperature: Up to ~260°C (500°F)

Thermal Conductivity: ~0.25 W/m·K

Coefficient of Thermal Expansion: ~47 × 10⁻⁶ /°C