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ISO 9649 Metallic materials - Wire - Reverse torsion test
Date：2017-02-07 Source：United Test Views：100
Metallic materials - Wire - Reverse torsion test
This International Standard 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.
A test piece of wire is twisted a specified number of turns through 360° around its own axis in one direction, and then a specified number of turns through 360° in the opposite direction.
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