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Best Stick Rod For Welding Cast Iron. Choosing electrodes for welding cast iron typically comes down to three things. Repairs made with Tech-Rod 99 are often single pass welds with high admixture.
The attached pics were done in 1999 and I still do work for the same piano restorer. What is the best way to weld cast iron. This is regarded as the best welding rod to use on cast iron.
Its a non-ferrous alloy.
The slag formation behind the puddle will be a little different than welding mild steel but you will get the hang of it. An E7018 will do the trick too. Ductile can be welded with either nickel or 7018 or SS and in some cases 6011. Gas Welding is also a slow process.