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    Effect of Carbon Content on the Notch Properties of 43XX-Vanadium Modified and 5 per cent Chromium Sheet Steels

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    The notch properties of 43XX-vanadium modified steel containing 0.21, 0.30, 0.41, 0.50, and 0.60 per cent carbon have been measured for several tempered conditions at temperatures from −320 to 85 F. Five per cent chromium steels containing 0.24 and 0.39 per cent carbon heat treated to hardnesses in the Rockwell hardness C 40 to 50 range were likewise tested. In the 43XX-vanadium modified steels reduced carbon content promoted notch toughness. In the 5 per cent chromium steels the reverse effect was observed. The fracture characteristics of the steels are discussed briefly.

    Author Information:

    Klier, E. P.
    Professor of Metallurgy, The Catholic University of America, Washington, D. C.

    Committee/Subcommittee: E28.10

    DOI: 10.1520/STP46985S