Historical
ISO 4599:1986
Plastics - Determination of resistance to environmental stress cracking (ESC) - Bent strip method
This International Standard specifies a method for the determination of environmental stress cracking (ESC) resistance of plastics by means of a constant prestrain test. ESC will be indicated by the change of a suitably chosen indicative property of specimens that have been prestrained for a definite time in the environment. The method of test is suitable for determining the resistance of sheets and of flat test specimens to environmental stress cracking, especially the sensitivity of localized surface regions of specimens to ESC.
For the determination of the ESC sensitivity of finished articles or the bulk of a material subjected to a constant strain, see ISO 4660.
The bent strip method is suitable for the determination of ESC caused by gases and liquids as well as by solids containing migrating substances (e.g. polymeric adhesives and materials containing plasticizers) in contact with a specific polymer.
Preferably, this method is used to determine the ESC resistance of rigid plastics with only moderate stress relaxation in time.
For a constant strain test, refer to ISO 4600. For a constant stress test, refer to ISO 6252.
Content Provider
International Organization for Standardization [iso]
