What is EN ISO 9839:2012?

EN ISO 9839:2012 is a technical standard that provides guidelines for conducting tests to determine the tensile and elongation properties of plastics, specifically rigid materials. These properties are essential in understanding how plastics behave under tension and can help manufacturers design and produce plastic products with adequate strength and durability.

Why is it Important?

Understanding the tensile and elongation properties of plastics is crucial for various industries, including automotive, construction, packaging, and electronics. Knowing these properties allows engineers and designers to select the right materials for their specific applications, ensuring the performance and safety of the final product.

Testing Procedures

The testing procedures outlined in EN ISO 9839:2012 involve subjecting samples of the plastic material to tensile forces until they break. These tests are performed under strict conditions, including temperature and humidity control, to ensure accurate and reliable results. The standard specifies the equipment, sample preparation, testing parameters, and data analysis methods to be used.

Interpreting the Results

Once the testing is complete, the results are analyzed to determine the ultimate tensile strength (UTS), yield strength, and elongation at break of the material. The UTS is the maximum stress a material can withstand before breaking, while the yield strength is the stress at which the material begins to deform permanently. Elongation at break measures the ability of the material to stretch before fracture.

By analyzing these properties, engineers can evaluate the suitability of different plastics for specific applications. For example, a product that requires high strength and rigidity may require a material with a higher UTS and lower elongation at break, while a flexible or stretchable product would benefit from a higher elongation at break.

EN ISO 9839:2012 plays a crucial role in ensuring the quality and reliability of plastic products. By following the standard's testing procedures and interpreting the results correctly, manufacturers can make informed decisions regarding material selection and design.