Accession Number : AD0282927

Title :   DEVELOPMENT OF NEW AND USEFUL ELEVATED-TEMPERATURE STEELS FOR AIRCRAFT APPLICATIONS

Corporate Author : CRUCIBLE STEEL CO OF AMERICA PITTSBURGH PA

Personal Author(s) : KASAK,A. ; CHANDHOK,V.K. ; DULIS,E.J.

Report Date : 15 JUL 1962

Pagination or Media Count : 1

Abstract : OF THE LARGE NUMBER OF EXPERIMENTAL COMPOSITIONS INVESTIGATED, THE 0.15 C - 14.5 Cr - Mo - V - Co type steels indicated the best combination of desired characteristics and properties. A nominally 0.15 C - 14.5 Cr - 5 Mo - 0.5 V - 13.5 Co steel, Steel AFC 77, was selected for scaling-up for production on mill facilities. Steel AFC 77 has very high strength (290,000 psi tensile strength) at the ambient temperature and retains its strength remarkably well up to about 1200 F (120,000 psi tensile strength at 1200 F). In fact, Steel AFC 77 has appreciably higher strength, particularly in prolonged exposures, than any stainless steel known. The excellent strength properties over a wide temperature range are accompanied by good ductility; indications of good formability and weldability were also obtained. In addition to its superior mechanical properties, Steel AFC 77 is resistant to atmospheric corrosion and oxidation. (Author)

Descriptors :   *CORROSION RESISTANT ALLOYS, *HEAT RESISTANT METALS + ALLOYS, *STAINLESS STEEL, *STEEL, CARBON ALLOYS, CHROMIUM ALLOYS, COBALT ALLOYS, CORROSION, HARDNESS, HEAT TREATMENT, HIGH TEMPERATURE, MARTENSITE, MOLYBDENUM ALLOYS, OXIDATION, PROCESSING, TENSILE PROPERTIES, VANADIUM ALLOYS, WELDING

Distribution Statement : APPROVED FOR PUBLIC RELEASE