MILL SAMPLING TECHNIQUES FOR QUALITY DETERMINATION OF SHIP STEEL PLATE
In order to evaluate the variation in notch toughness of currently produced ship plate steel, studies were made of 105 plates submitted by five producers. The plates were selected to give statistical information regarding the variation in composition, mechanical properties and microstructure that might be expected within heats, within ingots, and with position in the plate, and complete information regarding the processing of the plates was obtained from the producers. The notch toughness was evaluated primarily by the Charpy V-notch impact test, although two cooperating laboratories tested many of the plates with the drop weight and van der Veen slow bend tests. The results showed somewhat different patterns for the fully killed and semikilled grades, and sampling plans for each grade are suggested. Because of the marked uniformity of the mill practices of the producers, it was not possible to assess the separate effects of processing variables on notch toughness.
National Bureau of StandardsGaithersburg, MD USA
Ship Structure CommitteeNational Academy of Science, 2101 Constitution Avenue, NW
Washington, DC USA 20418
- Staugaitis, C L
- Publication Date: 1962-2-28
- Features: References;
- Pagination: 47 p.
- TRT Terms: Notching (Cutting); Plate bearing test; Shipbuilding steel; Strength of materials
- Identifier Terms: Ship Structure Committee
- Old TRIS Terms: Charpy tests; Notch toughness; Ship steels
- Subject Areas: Marine Transportation; Materials;
- Accession Number: 00331924
- Record Type: Publication
- Source Agency: Ship Structure Committee
- Report/Paper Numbers: SSC-141 Final Rpt.
- Contract Numbers: NObs-84321
- Files: TRIS
- Created Date: May 21 1981 12:00AM