DETERMINATION OF THE NIL-DUCTILITY-TRANSITION TEMPERATURE FOR A212B STEEL USED IN THE N.S. SAVANNAH PRESSURE VESSEL

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The nil-ductility-transitaion (NDT) temperature, as defined by the Naval Research Laboratory drop-weight test, was determined on the A212B carbon-silicon steel used in the pressure vessel of the N. S. Savannah reactor. Correlations were made with the Charpy-V-notch impact energy at NDT. Specimens taken at two different thickness locations from material used in the ipper closure head of the reactor vessel yielded NDT temperatures of 0 to 20 deg F which correspond to Charpy-V-notch impact energies of 11 to 19 ft-lb. Testing of as-received material used in the lower closure head indicated that the NDT temperature was 50 deg F which ... continued below

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Pages: 26

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Thurber, W.C. & Lamartine, J.T. July 23, 1959.

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Description

The nil-ductility-transitaion (NDT) temperature, as defined by the Naval Research Laboratory drop-weight test, was determined on the A212B carbon-silicon steel used in the pressure vessel of the N. S. Savannah reactor. Correlations were made with the Charpy-V-notch impact energy at NDT. Specimens taken at two different thickness locations from material used in the ipper closure head of the reactor vessel yielded NDT temperatures of 0 to 20 deg F which correspond to Charpy-V-notch impact energies of 11 to 19 ft-lb. Testing of as-received material used in the lower closure head indicated that the NDT temperature was 50 deg F which was equivalent to an average CharpyV-notch impact energy of 12 ft-lb. After normalizing and stress-relieving thin material, in order to more closely approximate the final ccndition of the reactor vessel, NDT was reduced to less than 10 deg F. (auth)

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Pages: 26

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  • Other Information: Orig. Receipt Date: 31-DEC-60

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  • Report No.: CF-59-7-143
  • Grant Number: W-7405-ENG-26
  • DOI: 10.2172/4206096 | External Link
  • Office of Scientific & Technical Information Report Number: 4206096
  • Archival Resource Key: ark:/67531/metadc874601

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Creation Date

  • July 23, 1959

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  • Sept. 21, 2016, 2:29 a.m.

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  • Nov. 3, 2016, 5:58 p.m.

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Thurber, W.C. & Lamartine, J.T. DETERMINATION OF THE NIL-DUCTILITY-TRANSITION TEMPERATURE FOR A212B STEEL USED IN THE N.S. SAVANNAH PRESSURE VESSEL, report, July 23, 1959; Tennessee. (digital.library.unt.edu/ark:/67531/metadc874601/: accessed July 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.