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

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.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Apr 01, 2016
Accession Number
AD1008453

Entities

People

  • Sean Fudger
  • William S. de Rosset

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Advanced Materials
  • Alloys
  • Chromium
  • Chromium Alloys
  • Emplacement
  • Fabrication
  • Gun Barrels
  • Guns
  • Machine Guns
  • Machines
  • Machining
  • Manufacturing
  • Materials
  • Measurement
  • Metals
  • Military Research
  • Refractory Metals

Readers

  • Metallurgy
  • Military Engineering.
  • ballistics.