Stress Corrosion Susceptibility of Aluminum Cartridge Cases

Abstract

The report concerns the investigation of stress corrosion cracking of experimental aluminum cartridge cases in a 6 percent sodium chloride boiling solution. The cases (5.56 mm) were of 7475 aluminum alloy, tempered to T6 or T73 condition, and the empty cases assembled with projectiles to represent the stressed condition of finished cartridges. Stresses applied to the mouth rim and neck of the cases were calculated from the interference, i.e., projectile diameter vs internal diameter of the case mouth and the case neck wall thickness. For each of three calculated stress levels, a range of failure times was observed.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1973
Accession Number
AD0778737

Entities

People

  • A. Gallaccio
  • M. A. Pelensky

Organizations

  • Frankford Arsenal

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Alloys
  • Aluminum
  • Aluminum Alloys
  • Assembly
  • Cartridge Cases
  • Corrosion
  • Diameters
  • Environmental Tests
  • Fabrication
  • Materials
  • Metals
  • Production
  • Projectiles
  • Sodium Compounds
  • Stress Corrosion
  • Stress Corrosion Cracking
  • Test Methods

Readers

  • Materials Science (Mechanical Engineering).
  • Surface Coatings Technology.
  • ballistics.