This listing is for 12 rods of 3/32″ diameter, 14″ length Vulcan Systems NastyCast cast iron repair electrodes.  Weight is approx 8 oz or 1/2 lb.  What you see in the picture is what you get.
Manufacturer’s Description:
Premium Electrode used for welding cast iron.  Deposits have a close color match to cast iron and special fluxing agents to weld dirty, nasty, contaminated cast iron.
Typical Applications:
Welding of castings that are saturated with oil, grease, chemicals, and other contaminants that make welding with other rods almost impossible.  Often used to repair burned furnace grates and to join problem cast irons to steel.  Also used to weld cracked machine bases, housings, and for the build up of worn areas.
Specs:
Tensile Strength – up to 60,000 PSI
Procedure:
Clean weld area if possible. Remove surface skin and all sharp edges. Bevel joint to form a U-groove. A bead hole must be welded at right angles to each end of all cracks to prevent spreading. Use low amperage and maintain a short arc. Short stringer beads or narrow weave beads should be used to prevent excessive heat build-up. When breaking the arc, always fill the crater and drag rod back over the weld deposit. Peening while still hot will help reduce stress. When restriking the arc, start on previously deposited weld metal, not on the base material. Allow part to cool slowly.
Demonstration Video:
Welding Oil-covered, rusty cast iron using 7700-GR gouging rod and NastyCast
Cast Iron Welding Demo – Dirty, oily, rusty cast iron with Vulcan NastyCast & Gouging Rod – YouTube
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