Accession Number : AD0780347

Title :   Toughness Differences between Silicon-Killed and Semi-Killed Mild Steel Plate,

Corporate Author : DEFENCE STANDARDS LABS MARIBYRNONG (AUSTRALIA)

Personal Author(s) : Wilms,G. R.

Report Date : 26 NOV 1973

Pagination or Media Count : 7

Abstract : The notch-impact properties of a commercial silicon-killed mild steel plate are compared with an equivalent grade semi-killed steel for different specimen orientations. Contrary to expectation, the notch toughness of the silicon-killed steel was lower than that of the semi-killed steel. Room-temperature tensile properties are also compared for different specimen orientations; higher yield and ultimate tensile strengths were obtained on the silicon-killed steel although ductility values were comparable with those for the semi-killed steel. It is concluded that none of these factors accounts for the lower notch toughness of the silicon-killed steel. (Modified author abstract)

Descriptors :   *Steel, *Notch toughness, *Silicon, Australia

Subject Categories : Metallurgy and Metallography

Distribution Statement : APPROVED FOR PUBLIC RELEASE