In the project period covered by the third semiannual report, detailed analysis of the effects of' the various processing parameters employed during Phase X effort was completed. Most information was obtained from the full factorial experiment of the 18NiCoMo (300) managing steel, where parametric and non-parametric, analyses were carried out. From these analyses, an optimum combination of processing parameters was derived, and incorporated in the processing schedule of the intermediate size cylindrical test specimen. All necessary forgings in 18 Nicoma (300) managing steel and tooling for fabrication were obtained, and two14. 5 diameter cylindrical test bottles -were spun to verify the results obtained during Phase I. effort was made in evaluating the backup approach to effect closure of the aft end by a shrinking operation.
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