Study to Increase Gun Barrel Life by Plating the Bore with Tungsten

Abstract

A 0.004 inch oversized .220 cal rifled gun barrel was plated with 0.002 inches of tungsten, thereby restoring its original bore size. The plated barrel and an unplated standard barrel were test fired with 1500 rounds of .220 caliber sport ammunition. This ammunition has a 48 grain projectile and was test fired at an average muzzle velocity of 3790 ft/sec with an average chamber pressure of 48,350 psi. The bore diameters as measured in both test barrels before firing and after firing 500, 1000 and 1500 rounds are listed. Less erosion was experienced over a shorter barrel length in the tungsten plated barrel than in the unplated barrel.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1968
Accession Number
AD0851365

Entities

People

  • J. W. Gehring
  • K. H. Meyer

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Ammunition
  • Crystal Structure
  • Electron Emission
  • Equations
  • Firing Rate
  • Hardness
  • Heat Capacity
  • Heat Transfer
  • Materials
  • Measurement
  • Mechanical Properties
  • Physical Properties
  • Tensile Strength
  • Thermal Conductivity
  • Toughness
  • Vapor Phases

Readers

  • ballistics.