PEEK Material Properties: Toughness and Strength

Toughness of PEEK Material

Polyetheretherketone (PEEK) is a high-performance thermoplastic renowned for its toughness and superior mechanical properties, making it ideal for various demanding applications, including aerospace, automotive, and chemical processing.

Mechanical Strength

Tensile Strength: PEEK exhibits a tensile strength ranging from 90 to 100 MPa (unfilled), significantly higher than many other thermoplastics. This strength is crucial for applications involving high pressure or heavy loads, ensuring structural integrity under stress.

Compressive Strength: The compressive strength of PEEK can reach up to 200 MPa, making it suitable for load-bearing applications. This property is essential for maintaining performance in challenging environments.

Impact Resistance and Toughness

PEEK demonstrates excellent impact resistance, characterized by its ability to absorb energy without fracturing. Its toughness allows it to perform well in applications where accidental impacts may occur. The impact strength can be around 38 kJ/m², significantly higher than traditional materials.

Material Properties

Poisson's Ratio: The Poisson's ratio of PEEK typically ranges from 0.27 to 0.42, indicating its ability to deform elastically when subjected to stress.

Density: PEEK has a density of approximately 1,300 kg/m³, contributing to its lightweight yet strong characteristics.

Hardness: PEEK exhibits a hardness of 126 Shore D, indicating its rigidity and resistance to indentation. In terms of Rockwell hardness, it can reach values around HRC 85.

Rigidity and Thermal Stability

Young's Modulus: With a Young's modulus of about 3.5 to 4.1 GPa, PEEK maintains dimensional stability under load, which is critical in structural applications.

Thermal Resistance: PEEK can operate continuously at temperatures up to 170°C (338°F) without significant loss of mechanical properties, making it suitable for high-temperature environments.

Wear Resistance

PEEK's low coefficient of friction contributes to its exceptional wear resistance, making it ideal for components such as bearings and seals that experience continuous movement and contact.

In summary, the toughness of PEEK, alongside its impressive mechanical strength, impact resistance, and thermal stability, positions it as a superior material in engineering and industrial applications where durability and performance are paramount. For further detailed specifications and data sheets regarding the toughness of PEEK and its material properties, resources such as the "PEEK Material Properties" provide comprehensive insights into its performance characteristics and applications. Please ask us for PEEK Material Datasheet PDF file.