scope:

This document specifies the general test method to be used for the determination of the impact properties of unnotched and notched specimens cut from thermoplastics pipes for the transport of fluids. - Method A: unnotched method, for unnotched specimens cut from thermoplastics pipes for the transport of fluids. - Method B: notched method, for specimens cut from thermoplastics pipes for the transport of fluids, into which a notch has been machined. NOTE 1 - The use of method A or method B is determined by the relevant product standards. It is not intended to be a reference test method for the determination of the impact strength of pipes. NOTE 2 - ISO 3127, relating to the determination of the impact strength of pipes by means of a falling mass, is the reference method. However, this part of ISO 9854 can be used for scientific research, materials testing or the examination of pipe when it is not possible to take measurements in accordance with the reference method. This document may be applied to either isolated batches or continuous production of pipe and the test can be carried out at - 20 °C, 0 °C or 23 °C, depending on the pipe material and/or size. For the test parameters, i.e. impact energy, specimen dimensions, type and span of the specimen supports and type of specimen, to be used to determine the pendulum impact strength of pipes, the specifications for specific materials are given in ISO/DIS 9854-2, as appropriate. NOTE 3 - Data obtained from specimens of different dimensions are not directly comparable.