Accession Number : ADA954965

Title :   Resistance of Variously Chemically Balanced 18-8 Stainless Steels in Various Conditions of Hardness to Perforation by Flak-Simulating Projectiles.

Descriptive Note : Memorandum rept.,

Corporate Author : WATERTOWN ARSENAL LABS MA

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

Report Date : 18 SEP 1944

Pagination or Media Count : 7

Abstract : As part of a general program of development of body armor component materials, tests have recently been conducted at this arsenal on three different chemically balanced 18-8 (type 302) stainless steels in 1/4 hard, 1/2 hard and full hard tempers. Increasing the nickel content from 7% to 9.5% brought about an increase in yield strength and a decrease in elongation whereas the tensile strength remained substantially unaffected. These lower elongation values are reflected in a generally inferior resistance to perforation exhibited by the steels containing greater amounts of nickel. However, the resistance of even the best of these steels is considerably inferior to that of Hadfield manganese steel of equivalent weight.

Descriptors :   BODY ARMOR, ELONGATION, MANGANESE ALLOYS, MATERIALS, NICKEL, PERFORATION, RESISTANCE, STAINLESS STEEL, STEEL, TENSILE STRENGTH, VALUE, WEIGHT, YIELD STRENGTH

Subject Categories : Armor

Distribution Statement : APPROVED FOR PUBLIC RELEASE