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This part of ISO 3377 specifies a method for determining the tear strength of leather using a single edge tear. The method is sometimes described as a trouser tear and is in accordance with the IUP 40-1:2011 method. It is applicable to all types of leather. A rectangular test specimen partially slit from one short edge is pulled so that a tear is propagated from the end of the slit. The mean force exerted during separation of the test piece is recorded. The committee responsible for this standard is NA 062-05-51 AA "Anforderungen und physikalische Prüfverfahren für Leder und seine Ausgangsprodukte" ("Requirements and physical test methods of leather and ...") at DIN.
This document replaces DIN EN ISO 3377-1:2003-10 .