Molybdenum Alloys

Weld Fabrication of a 6% Molybedenum Alloy to Avoid Corrosion in Bleach Plant Service (14020)

By Edward L. Hibner, Evan B. Hinshaw and Stephen Lamb, reprinted from Proceedings, Technical Association of the Pulp and Paper Industry, 1992. Addressed is the formation of unmixed zones that can form during the weld fabrication of N 08925, one of the 6%-molybdenum alloys. Using proper weld fabrication procedures and joint design, these mixed zones can be shown to be minimized and the weld corrosion integrity of the joint conformed using standard corrosion test procedures. No effect of heat tint or heat input on corrosion resistance was discerned and the root pass weld was not preferentially attacked, it is stated.

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