Helmets: Ballistic and Metallurgical Investigation of Amola Steel Helmets

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.

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Document Details

Document Type
Technical Report
Publication Date
Aug 20, 1943
Accession Number
ADA954363

Entities

People

  • E. L. Reed

Tags

DTIC Thesaurus Topics

  • Ammunition
  • Ball Ammunition
  • Body Armor
  • Brittleness
  • Chemical Analysis
  • Cold Working
  • Grain Size
  • Hardness
  • Heat Treatment
  • Manganese
  • Manufacturing
  • Materials
  • Measurement
  • Mechanical Working
  • Munitions
  • Physical Properties
  • Standards
  • Steel
  • Thickness
  • Three Dimensional

Readers

  • Military Engineering.
  • Powder metallurgy of Titanium alloys.
  • Surface Engineering/Surface Coating Technology.