Cangzhou Avant International Trade Co., Ltd. is one of the leading manufacturers and suppliers of peek granules in China. We are committed to providing high quality customized products with competitive price. Welcome to wholesale cheap peek granules in stock here from our factory. Also, free sample is available.
Key Characteristics of PEKK Granules
The properties of PEKK granules can be precisely controlled by adjusting the ratio of terephthaloyl (T) groups to isophthaloyl (I) groups (the T/I ratio) and the molecular weight, thereby achieving an optimal balance between performance and processability.
Superior Thermal Properties
High Heat Resistance: Continuous service temperature reaches 250–260°C, with the ability to withstand short-term exposure to temperatures exceeding 300°C.
High Melting Point: Typically ranges from 305°C to 360°C, depending on the T/I ratio; for instance, grades with a high T/I ratio exhibit higher melting points and faster crystallization rates.
High Glass Transition Temperature (Tg): Approximately 156–165°C, ensuring excellent rigidity and dimensional stability at elevated temperatures.
Outstanding Mechanical Properties
High Strength and Toughness: Tensile strength reaches 90–118 MPa, combining high rigidity with excellent impact resistance and good creep resistance.
Wear Resistance and Self-Lubrication: Low coefficient of friction and excellent wear resistance make it suitable for manufacturing moving parts such as gears and bearings.
Excellent Chemical and Electrical Properties
Chemical Resistance: Highly resistant to most organic solvents, acids, alkalis, saltwater, and oils (with the exception of superacids such as fuming sulfuric acid and concentrated nitric acid).
Electrical Insulation: Low dielectric constant (approx. 2.2) and low dielectric loss, maintaining stable insulation performance across a wide range of temperatures and frequencies. Safety and Environmental Characteristics
Inherent Flame Retardancy: Achieves UL94 V-0 rating without added flame retardants; produces minimal smoke and is non-toxic during combustion.
Biocompatibility: Complies with medical standards such as ISO 10993; offers good X-ray visibility, making it suitable for long-term implantable medical devices.
A key advantage of PEEK granules is the ability to flexibly control crystallization rates by adjusting molecular structure ratios. Market offerings generally fall into fast-, medium-, and slow-crystallizing grades. Fast-crystallizing PEEK granules are ideal for high-volume injection molding, offering shorter cycle times and higher production efficiency. Slow-crystallizing grades exhibit lower internal stress and superior dimensional stability post-molding, making them perfect for complex, high-precision components. In addition to natural (unfilled) grades, we offer modified PEEK granules-including glass fiber-reinforced, carbon fiber-reinforced, and wear-resistant variants-to meet specific requirements for strength, rigidity, and frictional performance. Supplied as uniform cylindrical pellets with stable flow characteristics, they are compatible with standard injection molding and extrusion equipment, requiring no major modifications to existing production lines.
We offer OEM customization services for modified PEEK granules, allowing for adjustments to filler ratios, viscosity, and color based on specific component operating conditions and molding equipment parameters. For the medical industry, we utilize high-purity raw materials with strictly controlled metal ion leaching, making them suitable for implantable devices. PEEK granules for oil and gas seals are optimized for wear resistance and creep resistance, while grades for the semiconductor industry feature low outgassing and high cleanliness. Customers can submit component drawings, processing specifications, and environmental requirements; we then conduct laboratory-scale sample testing to verify processing performance and final product quality before proceeding to mass production, thereby mitigating the risks associated with immediate large-scale manufacturing.
PEEK granules serve a wide range of high-end industries, including lightweight structural and interior components for aerospace; precision components for orthopedics and dentistry; valve seats and seal rings for oil and gas downhole applications; high-temperature insulating fixtures for semiconductors; and fluid handling components for chromatography. Whether you are a materials trader developing a private label or a manufacturer seeking a supplier of stable, high-performance raw materials, we provide comprehensive support-including sample provision, formula optimization, and full-container export services. If you have material testing requirements, please feel free to contact us to send samples for evaluation.
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