EZ Weld TIG wire is a core filled wire, which includes 4% Utechtanite. It is an excellent product for welding cast iron, cast iron to steel, and other dissimilar metals. EZ Weld TIG wire contains no nickel or any other elements considered hazardous to the welder. Our wire wets and flows at a lower temperature. The weld bead stays ahead of the tungsten tip and thus appeals to most welders.
I learned about this wire from a youtube video by weld.com. I had a couple of broken cast iron parts from a 60 year old tractor that I thought I was going to have to replace. I was able to weld both parts successfully with EZ Weld TIG wire. I practiced by cutting some old cast iron weights I picked up from the salvage yard and welding them back together. I found that welding a little at a time cold (1 inch or less) then letting the part cool completely down before welding another section delivered the best results. I’ve never used a product that delivered such successful consistent results with cast iron.