HIGH-STRENGTH CHROMIUM-MOLYBDENUM RAILS

A laboratory study was conducted to develop an as-rolled rail of over 100 ksi (689 N per sq mm) yield strength. Two 100-ton commercial heats were made of the resulting composition and processed into rails. Laboratory tests showed yields up to 125 ksi. The chromium-molybdenum rails also exhibited excellent fracture toughness and fatigue properties. Sections of the rails were jointed by both flash-butt welding and thermit welding. Hardness peaks produced in the butt welding could be reduced by applying either a postweld current or an induction heating cycle. The high-strength rails have been in service over eight months in curved track of an ore railway.

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 621-651
  • Serial:
    • Volume: 77

Subject/Index Terms

Filing Info

  • Accession Number: 00139940
  • Record Type: Publication
  • Report/Paper Numbers: Bulletin 658 Proceeding
  • Files: TRIS
  • Created Date: Oct 26 1976 12:00AM