A Collection of Steel Metallographies with Illustration and Descriptions. Open PDF Document Details Document Type Technical Report Publication Date Nov 16, 1977 Accession Number ADA061960 Entities Organizations National Air and Space Intelligence Center Tags Communities of Interest Advanced Electronics DTIC Thesaurus Topics Acids Alloys Aluminum Annealing Chemistry Fungi G Agents Graphitic Materials Heat Treatment Hydrochloric Acid Iron Materials Mechanical Properties Metals Nitric Acid Nonmetals Steel