ISO 22088-2 Plastics - Determination of Resistance to Environmental Stress Cracking (ESC) - Part 2: Constant Tensile Load Method

This part of the ISO 22088 standard, developed by the International Standards Organization (ISO), specifies methods for determining the environmental stress cracking (ESC) of thermoplastics when subjected to a constant tensile load in the presence of chemical agents.

It can be applied to test specimens prepared by molding and/or machining and can be used both to evaluate the ESC of plastic materials exposed to different environments and to determine the ESC of different plastic materials exposed to a particular environment.

This is primarily a ranking test and is not intended to provide data to be used for design or performance prediction.

Methods for determining environmental stress cracking by means of a constant strain test are specified in ISO 22088-3, ISO 22088-4 and ISO 22088-5.

When a plastic material is stretched or stretched in air below its yield point, stress cracking can occur after a time that can be too long. These voltages can be internal or external, or a combination of both. Simultaneous exposure to a chemical environment and stress or strain can result in significantly shorter downtime compared to an inert environment.

This phenomenon is called environmental stress cracking (ESC) and is exhibited by many materials, including plastics. Allowable long-term stress or strain can be significantly reduced by this phenomenon.

Measurements can also be used to evaluate the effect of molding conditions on the quality of an article when the failure mode corresponds to that achieved in actual service.

However, it is almost impossible to establish any direct relationship between the results of short-term ESC measurements on test samples and the actual service behavior of the articles, since the behavior of the latter will be more complex than that of the test samples.

Among the services provided by our organization within the framework of material testing services, there are also ISO 22088-2 standard tests. Do not hesitate to contact our laboratory EUROLAB for your testing and certification requests.