Accession Number:

ADB010516

Title:

Development and Evaluation of Nonmetallic Materials for Belt Links

Descriptive Note:

Technical rept. Jul 1972-Jun 1974

Corporate Author:

ROCK ISLAND ARSENAL IL GENERAL THOMAS J RODMAN LAB

Personal Author(s):

Report Date:

1974-11-01

Pagination or Media Count:

36.0

Abstract:

Selected plastic and elastoplastic materials were investigated for potential use as small arms and aircraft armament belt links. In this study only castable materials were evaluated because of the ease of chemical modification and simplicity of molding into links. A 7.62mm, M13 link, was used as a model to cast prototype links. Two types of epoxy resins with high tensile strength and low elongation were selected as the best available base materials to modify for links. The epoxy closed loop link was found to have more than twice the tensile strength of the open-loop steel control link in the belted configuration. Plastic links did not corrode and leave rust scale deposits on cartridge cases as found on steel linked cases after the water immersion test. The epoxy links maintained approximately 70 percent of their tensile strength after a 200 hour accelerated aging test in the Weather-Ometer. The epoxy material reduced the link weight by 30 percent when compared to the current M13 steel link.

Subject Categories:

  • Laminates and Composite Materials
  • Ammunition and Explosives

Distribution Statement:

APPROVED FOR PUBLIC RELEASE