PEEK plastic shape stock and components have become increasingly popular in a variety of industries due to their excellent thermal, mechanical and chemical properties. The tensile strength of PEEK products, an important mechanical property, is critical for evaluating their performance. In this article, we'll take a closer look at ISO standards for measuring the tensile strength of PEEK products, how it's tested and how it affects the practical application of PEEK products.
ISO Standard for Tensile Strength of PEEK products
ISO 527-2:2012 is the standard test method for the tensile properties of PEEK products. This standard prescribes the general principles for the tensile testing of plastics and includes the measurement of tensile strength, tensile modulus, and other parameters. It sets the requirements for specimen preparation, testing conditions and data reporting for tensile tests of PEEK materials.
Test Method for Tensile Strength of PEEK Products
To measure the tensile strength of PEEK products, a standardized test method is followed. The PEEK sheet or rod product is cut into a rectangular shape with a certain length and width of the specimen, which is measured with a micrometer or vernier caliper. The thickness of the specimen is accurately measured using a digital thickness meter. The specimen is then clamped by a testing machine, and a controlled tensile force is applied in the axial direction until the specimen is broken. The stress vs strain curve is obtained as the result of the tensile test, and the tensile strength is calculated according to the formula: Tensile strength = Maximum load / Original cross-sectional area of the specimen.
PImpact of Tensile Strength on PEEK products' Applications
PEEK products with high tensile strength are in high demand for many applications. For example, in the aerospace industry, PEEK materials with high tensile strength are widely used as replacement components for metal due to their low weight, high strength, and excellent heat resistance. In the medical industry, PEEK implants with high tensile strength are used for orthopedic repair applications because they provide the required mechanical properties, biocompatibility, and radiolucency needed for implantation. PEEK products with low tensile strength may not be fit for such demanding applications, as they do not provide the required mechanical properties.
Conclusion
In summary, the tensile strength of PEEK products is a crucial mechanical property that determines their performance in various industries. The ISO 527-2:2012 standard sets guidelines for the measurement of tensile properties, and the test method for tensile strength is simple and reliable. PEEK products with high tensile strength are highly sought after in many industries, including aerospace, medical, and automotive. Understanding the importance of tensile strength can help manufacturers design PEEK products and components that meet the specific requirements of their applications.
