I only use red and green tungsten in my job and we mostly weld aluminum but sometimes make steel and stainless steel. I use an old Miller Synchrowave 350 and this gray tungsten has improved every aspect of my welds. You start out a little lighter and the cleaning action around the weld is much tighter. I also noticed the increased clarity of the welded nickels. This may be because sharpened tungsten stays sharp and even the smallest rounded tip stays that way. I would definitely recommend this tungsten. In fact, I gave half an electrode to everyone in the store and they all gave rave reviews compared to the red and green.
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