Accession Number : ADA954291

Title :   Resistance of Austempered Mn-Mo Steel to Perforation by Cal. .45 Steel-Jacketed Ball Projectiles,

Descriptive Note : Partial rept. no. 17,

Corporate Author : WATERTOWN ARSENAL LABS MA

Personal Author(s) : Sullivan,J. F.

Report Date : 18 SEP 1944

Pagination or Media Count : 4

Abstract : As part of a program of development of improved body armor component materials, samples of a manganese-molybdenum steel austempered in a salt bath at different temperatures have recently been tested at this arsenal. Although a slight superiority in resistance to perforation by cal. .45 steel-jacketed ball projectiles is apparently attained by the sample austempered with agitation at 500 F when compared with samples austempered without agitation at 450 F, 500 F, 600 F and 700F, the general level of resistance is far below that of an equivalent weight of Hadfield manganese steel and is appreciably inferior to that of some other types of ferritic steels previously examined.

Descriptors :   BATHS, BODY ARMOR, FERRITES, MANGANESE ALLOYS, MATERIALS, RESISTANCE, SALTS, STEEL, WEIGHT

Subject Categories : Ammunition and Explosives
      Armor

Distribution Statement : APPROVED FOR PUBLIC RELEASE