DIN EN ISO 8495:2014-03

This International Standard specifies a method for a ring-expanding test on tubes, that is, used to reveal defects both on the surfaces and within the tube wall by expanding the test piece using a conical mandrel until fracture occurs. This test may be also used to assess the ability of tubes to undergo plastic deformation. The ring-expanding test is applicable to tubes having an outside diameter from 18 mm up to and including 150 mm and a wall thickness from 2 mm up to and including 16 mm. This document (EN ISO 8495:2013) has been prepared by Technical Committee ISO/TC 164 "Mechanical testing of metals", Subcommittee SC 2 "Ductility testing" (secretariat: JISC, Japan) in collaboration with Technical Committee ECISS/TC 110 "Steel tubes, and iron and steel fittings" (secretariat: UNI, Italy) in accordance with the agreement on technical cooperation between ISO and CEN (Vienna Agreement). Regarding the German collaboration, Working Committee NA 062-01-53 AA "Rohrprüfung für Metalle" ("Mechanical testing of metallic tubes") of the Materials Testing Standards Committee (NMP) is responsible.