01970cam a22003855i 4500 21840964 20250607104120.0 m o d f cr ||||||||||| 201210s1945 xxu ot f000 0 eng 0 ibc orignew u ncip 20 y-undeterm 2020725202 21840964 DLC eng pn DLC U393 DIV.18-302.4-M2 z Improvement in wrought gun tubes. Part III, Linear correlations among the tensile and impact properties in quenched out gun tubes. (Final Report No. M-556.) / Robert F. Mehl, Cyril Wells, A. H. Grobe, P. E. Busby. [United States] : [Office of Scientific Research and Development, National Defense Research Committee, Division 18-War Metallurgy], 08-16-1945. 1 online resource (22 pages) text txt rdacontent computer c rdamedia online resource cr rdacarrier Report series: OEMsr-771; Project Nos. NRC-38 and OD-34-3; OSRD No. 5454. Research lab: Carnegie Institute of Technology. Declassified by the authority of the Secretary of Defense Memorandum dated August 2, 1960--Title frame of microfilm reel. Report. Digital reproduction from OSRD-NRDC microfilm; also available in print and on microfilm. Description from catalog card image included in microfilmed report. United States. Office of Scientific Research and Development. National Defense Research Committee. Library of Congress Science, Technology, and Business Division Washington, D.C. 20540 https://hdl.loc.gov/loc.gdc/scitech.home gdcosrdmicrofilmpublic 2020725202 https://hdl.loc.gov/loc.gdc/osrd.2020725202 start page 169 ; end page 190 stb/osrdpublic reel124 stb/osrd reel124 Electronic Resource