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

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)

Document Details

Document Type
Technical Report
Publication Date
Jul 15, 1962
Accession Number
AD0282927

Entities

People

  • A. Kasak
  • E.j. Dulis
  • V.k. Chandhok

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aircrafts
  • Atmospheric Corrosion
  • Corrosion
  • Ductility
  • Mechanical Properties
  • Oxidation
  • Physical Properties
  • Production
  • Stainless Steel
  • Steel
  • Tensile Strength
  • Weldability

Fields of Study

  • Materials science

Readers

  • Aerospace Engineering
  • Metallurgy