M00001625
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ISO 18488 1st Edition, September 1, 2015 Polyethylene (PE) materials for piping systems - Determination of Strain Hardening Modulus in relation to slow crack growth - Test method
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Availability date: 07/13/2021
Description / Abstract:
This International Standard specifies a method for the
determination of the strain hardening modulus which is used as a
measure for the resistance to slow crack growth of
polyethylene.
The strain hardening modulus is obtained from stress-strain
curves on compression moulded samples. This International Standard
describes how such measurement is performed and how the strain
hardening modulus shall be determined from such a curve. Details of
the required equipment, precision, and sample preparation for the
generation of meaningful data are given.
This International Standard provides a method that is valid for
all types of polyethylene, independent from the manufacturing
technology, comonomer, catalyst type, that are used for pipes and
fittings applications.
NOTE This method could be developed for materials for other
applications.