Accession Number : ADA954363

Title :   Helmets: Ballistic and Metallurgical Investigation of Amola Steel Helmets.

Descriptive Note : Experimental rept.,

Corporate Author : WATERTOWN ARSENAL LABS MA

Personal Author(s) : Reed,E. L.

Report Date : 20 AUG 1943

Pagination or Media Count : 44

Abstract : The object is to determine if the 0.70% carbon magnetic Amola steel is a satisfactory substitute for the nonmagnetic Hadfield Manganese steel for the manufacture of the M1 helmet. The results of this investigation indicate that the ferritic (magnetic) 0.70% carbon Amola steel is a satisfactory ballistic substitute for the Hadfield Manganese steel which is now being used in the manufacture of the M1 helmet. The ballistic limit of the Amola steel helmet when austempered to a hardness of Rockwell C 47-49 is comparable to the Hadfield Manganese steel helmet.

Descriptors :   BALLISTICS, HELMETS, LIMITATIONS, MANGANESE ALLOYS, METALLURGY, STEEL, SUBSTITUTES

Subject Categories : Metallurgy and Metallography
      Ballistics

Distribution Statement : APPROVED FOR PUBLIC RELEASE