PEEK Granules (6 mm)
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In the field of high-performance engineering plastics, PEEK has always occupied a central position in high-end applications such as aerospace, automotive manufacturing, medical devices and scientific research and development due to its unparalleled mechanical strength, high temperature resistance and chemical resistance.
To meet the diverse needs of laboratory, small batch, and high-precision manufacturing, Alfa Chemistry offers PEEK Granules (6 mm), a selection of high-purity raw materials with tightly controlled particle size and properties, to help you meet the demands of a wide range of applications.
Polyetheretherketone (PEEK) is a premium semi-crystalline thermoplastic known for its excellent mechanical strength, thermal stability (up to 260°C in continuous use), chemical resistance and biocompatibility.
Our 6 mm PEEK pellets are tailored for industrial processes such as injection molding and extrusion, where optimized flow and bulk density are critical. This pellet size offers the perfect balance of processing efficiency and process adaptability, making it ideal for mass production, precision parts and biomedical prototypes.
Characteristics:
Available Packaging:
Small-scale packages starting from 10g, 50g, 100g, up to 1kg — ideal for laboratory research and product development.
| Product name | PEEK Granules (6 mm) |
| Particle size | 6 mm diameter |
| Appearance | cylindrical granules |
| Purity | ≥99.9% |
| Color | Natural color (beige) |
| Density | 1.26–1.32 g/cm³ |
| Melting point | 343°C |
| Continuous use temperature | 260°C |
| Chemical resistance | Resistant to acids, alkalis, alcohols, ethers, hydrocarbons, steam |
| Limitations | Susceptible to halogens (Cl2, Br2), strong Lewis acids, and certain polar solvents like DMSO or THF at elevated temperatures. |
| Recommended processing method | Injection molding, extrusion |
Small laboratory packages, no minimum order limit
High purity guaranteed, suitable for high-end research needs
Technical support and processing advice for PEEK applications
Global shipping and flexible payment methods
Aerospace
Medical Devices
Automotive Industry
Oil & Gas
Research and High-end Manufacturing
PEEK pellets have been extensively used in the aerospace industry for the manufacture of structural components, insulation assemblies and precision fasteners. Their high strength, lightweight and high-temperature resistance have allowed them to replace metal materials in aircrafts that need weight reduction, corrosion resistance and extreme temperature adaptability. Moreover, PEEK's excellent electrical insulation and flame retardancy have made it an ideal material for cable insulation, connectors and electronic housings, effectively improving the safety and reliability of avionics systems.
PEEK is a biomedical plastic with excellent biocompatibility and has become a material of choice for implants and surgical instruments in the medical industry. 6 mm pellets are suitable for injection molding or extrusion of spinal fusion devices, dental implants, orthopedic fixtures and endoscopic components. PEEK implants are gradually replacing metal materials in medical research and clinical applications, as PEEK products are lighter in weight, artifact-free in imaging, corrosion resistant and non-allergenic.
PEEK particles are used in bearings, seals, gears, and engine parts under high-temperature environments in the automotive industry. PEEK's high-temperature resistance, abrasion resistance, and chemical stability enable them to perform well in the high load and severe working conditions of automotive powertrains, fuel systems, and braking systems, thus significantly improving the durability and safety of automobiles. Especially in the field of electric vehicles and new energy vehicles, PEEK is expected to be widely used in the application of motor insulation and lightweight, high-temperature-resistant parts.
PEEK's corrosion resistance, high pressure resistance and creep resistance make it extremely valuable in the oil and gas industry. 6 mm PEEK pellets are injection molded and extruded into seals, valve seats, downhole tools and connectors used in deep-well drilling and high-pressure transmission equipment. PEEK products have dimensional stability and long-term mechanical strength even in the extreme downhole environment of high temperature, high pressure and corrosion, effectively prolonging the service life of critical components and reducing maintenance costs.
6 mm PEEK pellets are the first choice for research institutions and low-volume, high-end manufacturers for the development of functional materials, research on composite materials, and precision molding experiments. They are often used in laboratories to explore the reinforcement mechanism of PEEK based composites, modification of biomedical materials, and optimization of the properties of new engineering plastics, thus contributing to the breakthroughs in materials science.
| Feature | 6 mm Granules | Powder |
| Optimal Processes | Injection molding, extrusion | Compression molding, coatings |
| Flow Characteristics | Superior for screw-fed systems | Prone to agglomeration |
| Medical Applications | Ideal for implantable devices | Limited to coatings |
| Moisture Control | Requires pre-drying at 150–160°C for 3–4 hrs | Similar, but harder to dry evenly |
Our 6 mm granules offer the best combination of process efficiency, consistency, and suitability for regulated industries like aerospace and medical devices.
Whether you are a research organization, a laboratory, or a small manufacturer, we can provide you with the right PEEK pellets with professional advice.
Request a QuoteAlfa Chemistry is proud to show you successful application examples of our PEEK granules.
The research team of this university focuses on the development of high-performance 3D printing materials, and in the process of selecting materials, there are stringent requirements on the fluidity, purity, and temperature resistance of PEEK. The customer chose our 6 mm PEEK pellets after many comparisons.
During the initial sampling process, the customer encountered unstable melt flow and moisture control problems. To address this pain point, we provided guidance on pellet drying parameters (150-160°C, 3-4 hours) and helped optimize the temperature profile for extrusion molding. Finally, the customer successfully prepared high-strength, corrosion-resistant carbon fiber reinforced PEEK composite wire and has achieved milestones in functional parts printing. The customer highly evaluated our fast response and technical support capability.
Customer Feedback:
"Alfa Chemistry not only provides high-quality PEEK particles but also helps us to solve the key technical bottlenecks in the material processing process, which greatly improves the R&D efficiency."
A medical company specializing in the development of orthopedic implants and surgical instruments purchased small packages of 6 mm PEEK pellets from Alfa Chemistry in order to test the feasibility of using PEEK in a new type of implant.
After understanding the customer's needs for high purity and biocompatibility, we recommended a batch of material that met the biological test criteria and also provided suggestions for optimizing the mold design and injection molding process. The customer successfully prototyped spinal fusion devices, bone fixators and other medical components with our materials; verified their excellent mechanical properties and X-ray transmittance; and successfully pushed forward with product registration and clinical testing.
Customer Feedback:
"Alfa Chemistry's professional support and high-quality materials helped us quickly complete the pre-testing of our implanted devices, and we look forward to further cooperation."
Are PEEK particles suitable for direct molding for 3D printing?
It is not recommended to use PEEK pellets directly for 3D printing. Typically, pellets are extruded into PEEK filaments before they can be used in 3D printing machines. We can advise our customers on the extrusion parameters of the pellets to assist in the development of the wire.
Do PEEK pellets support modifications such as carbon or glass fiber reinforcement?
Yes. We can provide customers with pure, unreinforced PEEK pellets but can also assist with guidance on how to achieve reinforcement through blending or filling processes, such as the addition of carbon or glass fibers or lubricating fillers.
What is the recommended mold temperature for PEEK pellets during injection molding?
A mold temperature of 160-200°C is recommended to ensure crystallinity and mechanical properties of the finished product. Too low a mold temperature will result in insufficient crystallization, affecting the strength and dimensional stability of the product.
What are the storage conditions for PEEK pellets?
Avoid humid environments. It is recommended that PEEK pellets be stored in a dry, well-ventilated area. If stored for a long period of time after opening, it is recommended to re-dry them to prevent moisture absorption and processing.
What additive manufacturing processes can PEEK pellets be used for?
PEEK pellets are commonly used in the feedstock preparation stage of melt extrusion, compression molding, etc. They are especially advantageous in the preparation of composite sheets or wires.
Can PEEK pellets be customized with color masterbatches or dyes?
Customization is supported. Although PEEK can be difficult to dye due to its high melting point and chemical stability, we can assist in developing custom masterbatch or color modification solutions.
Are there applications for PEEK pellets in high-frequency electronics?
PEEK has a low dielectric constant and low dielectric loss, which makes it suitable for use as an insulating and structural material in high-frequency electronics, especially in high-speed communications and radar.
Is it possible to choose a trial package for small quantities?
Yes, we do. We support the supply of small packages starting at 100 grams to meet the flexible needs of laboratory R&D, small-volume sampling and formulation testing.
What is the recyclability of PEEK pellets?
PEEK has strong thermal stability and aging resistance and can be recycled to a certain percentage after proper drying and screening. However, it should be noted that the mechanical properties and purity of the recycled material will be degraded, and it is not recommended to be used in applications that require very high performance.
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