DIN Standards Committee Steel Wire and Wire Products
DIN ISO 9649
Metallic materials - Wire - Reverse torsion test (ISO 9649:2023)
Metallische Werkstoffe - Draht - Wechselwindeversuch (ISO 9649:2023)
Overview
This document specifies a method for determining the ability of metallic wire, of diameter dimension from 0,3 mm to 10,0 mm inclusive, to undergo plastic deformation during reverse torsion. This test is used to detect surface defects, as well as to assess ductility. Working Committee NA 099-00-01 AA "Stahldraht" ("Steel wire") is responsible for German participation at DIN Standards Committee Steel Wire and Wire Products (NAD).