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.

• Supplemental Notes:
  • Presented at the 75th Technical Conference, AREA, Chicago, Illinois, 22-24 March 1976.
• Corporate Authors:

  American Railway Engineering Association

  59 East Van Buren Street
  Chicago, IL  United States  60605
• Authors:
  • Smith, Y E
  • Sawhill Jr, J M
  • Cias, W W
  • Eldis, G T
• Conference:
  • Presented at the 75th Technical Conference, AREA, Chicago, Illinois, 22-24 March 1976.
• Publication Date: 1976

Media Info

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

Subject/Index Terms

• TRT Terms: Alloy steel; Fatigue strength; Fracture properties; High strength steel; Metal heating; Metallurgy; Rail steel; Railroad rails; Welded rail; Welding
• Uncontrolled Terms: Heat treatment
• Old TRIS Terms: Rail steel metallurgy; Rail welding
• Subject Areas: Construction; Materials; Railroads;

Filing Info

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