Accession Number : AD1008453


Title :   Fabrication and Tests of M240 Machine Gun Barrels Lined with Stellite 25


Descriptive Note : Technical Report,01 Oct 2011,31 Dec 2015


Corporate Author : US Army Research Laboratory US Army Research Laboratory United States


Personal Author(s) : de Rosset, William S ; Fudger,Sean


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/1008453.pdf


Report Date : 01 Apr 2016


Pagination or Media Count : 32


Abstract : Two M240B barrel blanks were processed with the Gun Liner Emplacement with an Elastomeric Material procedure. The liner material was Stellite 25, a cobalt-chromium alloy. The liners were made by the flow-form process. The lined blanks were sent to FN Manufacturing, Columbia, South Carolina, for hammer-forging and final machining. Firing tests of the 2 barrels were successful, with no liner movement observed. Firing tests at high rates of fire need to be conducted to determine both wear and integrity of the liner.


Descriptors :   Gun barrel liners , polymers , Gun barrels , Firing tests(Ordnance) , Cobalt alloys , Chromium alloys


Distribution Statement : APPROVED FOR PUBLIC RELEASE