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Standards Development
This document specifies the dimensions, the method of sampling and the preparation of the test specimens, also the conditions for performing the low temperature tensile test perpendicular to the weld in order to determine the low temperature tensile welding factor.
A low temperature tensile test may be used in conjunction with other tests (e.g. bend, tensile creep, macro, ...) to assess the performance of welded assemblies, made from thermoplastics materials.
The low temperature tensile welding factor and the appearance of the fracture surface provide a guide regarding the ductility of the joint and the quality of the work.
The test is applicable to co-axial or co-planar welded assemblies made from thermoplastics materials filled or unfilled, but not reinforced, irrespective of the welding process used.
The test is not applicable for co-axial welded assemblies tubes of nominal external diameter less than 20 mm.
It has been clarified that if one test specimen yields, all of the test specimens cut from both the welded and unwelded test piece shall be tested at a temperature/speed that generates brittle fracture, not just one specimen.
The document also includes updates to PP-R, PA-U materials
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