Accession Number:

AD0780347

Title:

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

Descriptive Note:

Corporate Author:

DEFENCE STANDARDS LABS MARIBYRNONG (AUSTRALIA)

Personal Author(s):

• Wilms,G. R.

Report Date:

1973-11-26

Pagination or Media Count:

7.0

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