PEEK: A Material in a Class of Its Own
At PlastShop, we work daily with a wide variety of plastics. Sometimes, needs arise where only PEEK delivers. Polyetheretherketone, or PEEK, represents an extremely high-performing material that handles the toughest challenges. But what makes PEEK so special, and when is it worthwhile to invest in this costly plastic?
Extreme Properties in Focus
PEEK stands out due to a number of extreme properties, making it indispensable in certain applications. For example, the material withstands continuous temperatures up to 260°C, which is a remarkably high figure compared to many other plastics. In addition to this, PEEK exhibits outstanding chemical resistance and withstands numerous aggressive chemicals. The mechanical strength is also impressive, with a tensile strength reaching up to 100 MPa. Furthermore, PEEK has low moisture absorption and very low friction, making it perfect for applications where wear and friction are problematic. Another advantage is PEEK's low expansion coefficient, which means that the material barely expands or contracts with temperature changes.
Different Variants of PEEK
PEEK exists in different variants, where unfilled PEEK, GF30, and CF30 are the most common. The unfilled variant represents the purest form and has the best mechanical properties. GF30 is glass fiber reinforced and has higher strength and stiffness than unfilled PEEK. CF30, on the other hand, is carbon fiber reinforced and offers even higher strength and stiffness than GF30. At PlastShop, you'll find all these PEEK variants. Which variant is best depends entirely on the specific application and the demands placed on the material. For example, if a material is required that can withstand extremely high temperatures and chemicals, unfilled PEEK may be the best choice.
When the Cost Is Justified
PEEK is a costly material, which can make it difficult to justify the investment in certain applications. In many cases, however, PEEK is the only material that meets the required specifications, making the cost justified. In the aerospace industry, where safety is of utmost importance, PEEK may be the only material that guarantees sufficient performance and safety. How can one then justify the cost of PEEK in other contexts? One way is to compare the cost with other materials that can potentially meet the same requirements. Often, PEEK turns out to be the most economical option in the long run, thanks to its long lifespan and low maintenance costs.
Areas of Use for PEEK
PEEK is used in a variety of fields, such as the aerospace, medical, and oil and gas industries. In the aerospace industry, PEEK is used to manufacture components that are exposed to extremely high temperatures and chemicals, such as engines and fuel systems. In medicine, PEEK is used for implants and instruments due to its biocompatibility and chemical resistance. In the oil and gas industry, PEEK is used to manufacture components that are exposed to extremely high pressures and temperatures, such as valves and gaskets. PEEK can also be used in the chemical and automotive industries, where its unique properties provide significant advantages.
When PEEK Is the Only Option
When is PEEK the only option? In some applications, such as in the aerospace and medical industries, PEEK is often the only material that meets the high demands. In these cases, the cost of PEEK is well justified, as safety and performance are prioritized the most. In other applications, there may be cheaper alternatives that meet the requirements. For example, in some chemical applications, HDPE or PP may be sufficient and more economical choices. But when extreme temperatures, chemicals, and mechanical stresses are involved, PEEK is often the only viable option.
We wonder, how do you determine when PEEK is the only right choice? Are there other materials that can deliver the same performance, or is PEEK truly unique in these applications? We often discuss this question with our customers at PlastShop, and we strive to find the best solutions together. If you're facing a challenge where no other material is sufficient, PEEK may be the solution. We at PlastShop offer a wide range of PEEK variants and forms. Our experienced staff will help you choose the right material for your specific needs. Contact us to discuss your opportunities and find out if PEEK is the right choice for you.
PEEK: When No Other Material Suffices