Metallurgical Examination of 20 Ml Helmets, Made by the Schlueter Manufacturing Company, Which Cracked after Aging Open PDF Document Details Document Type Technical Report Publication Date Jan 29, 1944 Accession Number ADA953653 Entities People A. Hurlich Tags DTIC Thesaurus Topics Austenite Boundaries Cold Working Crystal Structure Fabrication Grain Boundaries Hardness Heat Treatment Helmets Manufacturing Mechanical Properties Mechanical Working Munitions Steel Stress Concentration