SEDL / STP / STP287-EB / STP46985S

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

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

Pages: 19    Published: Jan 1961

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Abstract

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.