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Mil-Arc 26

Nickel-Free electrode for sealing, building up, and welding cast iron. Grindable and *MACHINABLE*

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  • All position
  • Welds contaminated cast
  • Can be overlaid
  • Low heat input
  • Stable arc
  • Nickel-free core wire
  • Crack resistant
  • Fast buildup
  • Good color match


  • Small diameter versatility
  • Seals contaminated castings, savage part
  • Buildup and join with machinable deposit
  • Minimizes warpage and melt-away of casting
  • Oversized electrode is consistant, does not surge
  • Eliminates typical problems recognized by Ni-rod
  • Allows multiple passes, deposits are dense & tough
  • Minimizes heat buildup, little slag, reduced weld time
  • Cosmetically appealing, will rust like cast iron


Mil-Arc 26 is a nickel-free electrode used when nickel alloys will not fuse to the weld area or high machinability is not required. It will typically weld to poor quality cast iron surfaces and to steel. Use Mil-Arc 26 or Mil-Braze 236 bare gas welding rod with Mil-Braze 256 Flux to repair burned out furnace grates, internal engine casting, and manifolds. Mil-Arc 26 is an economical approach to fill large sections. It will offer some wear resistance of pour mold rebuilds for the steel industry, etc. Typically, the weld deposit will match in color and physical base metal properties. When a machinable surface is needed to finish the job, overlay with either Mil-Arc 22 or Mil-Arc 24. Apply at least two passes over Mil-Arc 26 to obtain a machinable surface.


Use Mil-Prep beveling and piercing electrode to remove cracked, damaged, and fatigued metal. Drill or pierce holes into casting at the end of cracks. If necessary, use a low resin grinding wheel, carbide burr, and/or wire brush to finish the preparation. Apply deposit using a medium arc and stringer beads, skip or back-step weld on long cracks. On smaller or thin applications, short weld deposits (1 1/2" are recommended), and then peen while still hot to relieve stress. Keep heat input on small, thin sections at a "hands-on" temperature. Pause and let slow cool to prevent overheating. For heavy sections, preheat to 500 F and maintain temperature within a 50 F degree radius until finished and then slow cool preferably within a confined ambient temperature area.


Tensile strength: up to 70,000 psi
Hardness: HB 286

Current and Polarity: AC/DCEP (+)
Part #DiameterAmperage
SMAW Nickel

Millennium Industrial Corporation
Export, PA 15632

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