COLUMBIUM ' 'H' ' SECTION PROGRAM PHASE I - EXTRUSION PHASE II - DRAWING.
Interim rept. no. 1, 1 July-1 Oct 63,
DU PONT DE NEMOURS (E I) AND CO BALTIMORE MD DU PONT METALS CENTER
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Phase I goal is the extrusion of D-43 Cb-10w1Zr-0.1C and Cb-752 Cb-10W-2.5Zr H sections of specified size, with section thickness of 0.060 in, and lengths of at least 20 feet. Two 8-in. diameter ingots were melted of each alloy, converted to billets, and extruded to 3.7 in. diameter stock. Nine 3.4-in.-diameter billets were extruded to H sections with thicknesses of 0.187 and 0.125 in. extrusion ratios of 12.41 and 18.21, from 3400 F. Phase II goal is the drawing of extruded H sections of the above alloys to specified size, with section thicknesses of 0.040 in., and lengths of at least 20 feet. Author