ISO 179-2 is a series on plastics. Plastics are a wide range of synthetic or semi-synthetic materials that use polymers as the main ingredient. ISO 179-2 specifies a method for determining Charpy impact properties of plastics from force-deflection diagrams. Different types of rod-shaped test specimens and test configurations, as well as test parameters depending on the type of material, the type of test specimen.
The method described in ISO 179-2 is also suitable for:
ISO 179-2 on plastic is useful for:
Why should you use ISO 179-2?
Plastics typically are made through human industrial systems. Most modern plastics are derived from fossil fuel based chemicals like natural gas or petroleum; however, recent industrial methods use variants made from renewable materials, such as corn or cotton derivatives. The Charpy impact test, also known as the Charpy V-notch test, is a standardized high strain-rate test that determines the amount of energy absorbed by a material during fracture. Absorbed energy is a measure of the material's notch toughness. The purpose of Charpy impact properties is to measure an object's ability to resist high-rate loading.
ISO 179-2 provides the required guidance on conducting instrumented impact tests for Charpy impact properties including apparatus, test specimens, procedures, calculation, and expression of results. The thickness and toughness of plastic determine the holding capacity of the plastic products, so ISO 179-2 ensures maintaining the thickness and toughness of plastic for creditability and consumer satisfaction. Using ISO 179-2 you can specify a method for determining Charpy impact properties of plastics from force-deflection diagrams.
BS EN ISO 179-2:2020 supersedes ISO 179-2:1997. BS EN ISO 179-2:2020 includes some technical changes with respect to ISO 179-2:1997. These include:
ISO 179-2
EN ISO 179-2