FABRICATION AND DESIGN OF STRUCTURES OF T-1 STEEL

THE COMPOSITION, TREATMENT AND FABRICATION PROCESSES FOR T-1 STEEL ARE REVIEWED. T-1 STEEL IS AN ALLOY HIGH YIELD STRENGTH STEEL WHICH OBTAINS ITS PROPERTIES BY HEAT TREATMENT. SPECIFIC TREATMENT IS BY QUENCHING IN WATER AND SUBSEQUENTLY TEMPERING. THIS MATERIAL MAY BE SHAPED BY ANY OF THE STANDARD FABRICATING PROCESSES, IF ALLOWANCES ARE MADE FOR A HIGH YIELD AND TENSILE STRENGTH. GUIDANCE FOR WELDING WITH LOW-HYDROGEN METHODS IS GIVEN, INCLUDING RECOMMENDATIONS FOR CONTROL OF HEAT INPUT. FLAME-CUTTING OR WELDING OPERATIONS SHOULD ONLY BE PERFORMED AFTER HEAT TREATMENT. EXAMINATION OF THE FATIGUE CHARACTERISTICS OF CONSTRUCTIONAL STEEL SHOW THAT THE CONVENTIONAL REVERSED- BENDING ENDURANCE LIMIT AS DETERMINED ON A POLISHED SPECIMEN WILL NOT PREDICT PERFORMANCE IN A GROSS STRUCTURE CONTAINING STRESS-RAISERS SUCH AS WELD BEADS, SCRATCHES AND AS-ROLLED SURFACES. BY USE OF A DIAGRAMMATIC METHOD OF PRESENTATION OF FATIGUE DATA RECOMMENDED BY THE WELDING RESEARCH COUNCIL, IT IS SHOWN THAT THE STRENGTH CHARACTERISTICS OF T-1 STEEL MAY BE USED TO ADVANTAGE IN APPLICATIONS SUBJECT TO FLUCTUATING STRESSES. FORMULAS ARE DERIVED FOR SUGGESTED UNIT STRESS VALUES OR REQUIRED CROSS-SECTIONAL AREA FOR BUTT AND FILLET WELDS.

• Record URL:
  • https://onlinepubs.trb.org/Onlinepubs/hrbproceedings/39/39-009.pdf
• Supplemental Notes:
  • Vol 39, pp 86-102, 10 FIG, 4 TAB, 16 REF. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.
• Authors:
  • Gilligan, J A
  • England, J R
• Publication Date: 1960

Media Info

• Media Type: Digital/other
• Monograph Title: Proceedings of the Thirty-Ninth Annual Meeting of the Highway Research Board, Washington, D.C., January 11-15, 1960
• Serial:
  • Highway Research Board Proceedings
  • Volume: 39
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Alloy steel; Fatigue (Mechanics); High strength steel; Metal heating; Stresses; Temperature control (Structures); Tempering; Tensile strength; Welding; Yield strength
• Uncontrolled Terms: Fatigue life; Heat treatment
• Old TRIS Terms: Quenching /cooling/
• Subject Areas: Bridges and other structures; Construction; Highways;

Filing Info

• Accession Number: 00209479
• Record Type: Publication
• Files: TRIS, TRB
• Created Date: Aug 29 1971 12:00AM