Engineering and Technical Investigations Development of a Tough Alloy Structural Steel

Using an earlier high performance (HP) steel developed by Northwestern University on behalf of FHWA and US Navy, its composition was modified by BMPR and ASTM Committee A01.02. This HP steel has 0.03-.09% C, with 1.3% Cu, 1.0% Ni, 0.7% Mn and 0.4% Si. Its toughness is typically 100 ft-lbs or more at sub-freezing temperatures. The alloy represents a major development in hot-rolled HP steels, not require quenching & tempering or other thermo-mechanical processing. Normalizing may be specified for very high toughness. The cost/ton is directly competitive with conventional weathering steel (ASTM A588). Application into various bridges and other structures requires further exploration.


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    • Status: Completed
    • Contract Numbers:


    • Sponsor Organizations:

      Illinois Department of Transportation

      2300 S. Dirksen Parkway
      Springfield, IL  United States  62764
    • Performing Organizations:

      Illinois Department of Transportation

      Bureau of Materials and Physical Research
      126 East Ash Street
      Springfield, IL  United States  62704-4766
    • Principal Investigators:

      Hahin, Christopher

    • Start Date: 20000700
    • Expected Completion Date: 0
    • Actual Completion Date: 20060400
    • Source Data: RiP Project 13345

    Subject/Index Terms

    Filing Info

    • Accession Number: 01460403
    • Record Type: Research project
    • Source Agency: Illinois Department of Transportation
    • Contract Numbers: IHR-R16
    • Files: RiP, STATEDOT
    • Created Date: Jan 3 2013 1:24PM