MILL SAMPLING TECHNIQUES FOR QUALITY DETERMINATION OF SHIP STEEL PLATE

Abstract

To evaluate the variation in notch toughness of currently produced ship plate steel, studies were made of 105 plates submitted by 5 producers. The plates were selected to give statistical information regarding the variation in composition, mechanical properties and microstructure that might be expected within heats and ingots, and with position in the plate. The notch toughness was evaluated primarily by the Charpy V-notch impact test, although 2 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 uniformity of the mill practices, it was not possible to assess the separate effects of processing variables on notch toughness.

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Document Details

Document Type
Technical Report
Publication Date
Feb 28, 1962
Accession Number
AD0273767

Entities

People

  • Charles L. Staugaitis

Tags

Communities of Interest

  • Advanced Electronics
  • C4I
  • Energy and Power Technologies
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Chemical Analysis
  • Chemistry
  • Data Analysis
  • Engineering
  • Grain Size
  • Impact Tests
  • Materials
  • Mechanical Properties
  • Metallurgy
  • Metals
  • New York
  • Standards
  • Statistical Analysis
  • Tensile Properties
  • Tensile Strength
  • Transition Temperature
  • Transitions

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  • Metallurgy