MIL-E-22200/3F

Abstract

This specification covers nickel, nickel alloy, and chromium-cobalt alloy covered electrodes for shielded metal-arc welding with direct current (dc) reverse polarity. <b><u>Intended Use:</u></b> Nickel, nickel alloy and chromium-cobalt alloy types of welding electrodes covered by this specification are used, principally, in applications involving corrosion and heat resistance as indicated in 6.1.1 through 6.1.11. The applications of this type electrode are the joining of nickel-chromium-molybdenum-columbium alloy (see ASTM B 443, B 444, and B 446) to itself and to steel and the overlaying of nickel-chromium-molybdenum-columbium alloy on steel. The applications of this type electrode are the joining of wrought nickel-chromium-iron alloy (see MIL-N-23228) to itself and the welding of nickel-chromium-iron alloy (welding grade) castings. The applications of this type electrode are the welding of materials such as carbon steel, AISI 200, 300, 400, 500 steels, nickel and nickel base alloys to themselves or to each other in wrought and cast forms. The applications of this type electrode are the joining of wrought commercially pure nickel (see ASTM B 162) to steel, overlaying of nickel on steel, and welding of the clad side of nickel-clad steel. The applications of this type electrode are similar to those for MIL-4N1A where higher quality levels are normally required. This type is also intended for overlay welding applications. The applications of this type electrode are welding wrought nickel-copper alloys (see ASTM B 127 and QQ-N-281), and cast nickel-copper alloy (see QQ-N-288, weldable grade), joining nickel-copper alloys to steel, welding of the clad side of nickel-copper alloy clad steel and overlaying steel. For these applications, this type of electrode is suitable for use in the as-welded or stress relieved condition. These applications include all of the applications of the former types MIL-3N10, MIL-4N10 and MIL-8N10. The application of this type electrode is the joining of alloys of similar composition to the electrode. The application of this type electrode is the joining of alloys of similar composition to the electrode. The application of this type electrode is the joining of alloys of similar composition to the electrode. The application of this type electrode is the joining of alloys of similar composition to the electrode. The application of this type electrode is the joining of the Hastelloys A, B and C to steel and to dissimilar nickel bearing alloys. <br>