im thinking 7018 but ive never used them...i hear they are a nice rod...mabye 6010 or 6011???also what amp should i run it at??90 if i can get it to stick??still a noob in welding for sure
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...deffinitley some good advice there....i need to practicesome more anyway...chevyin said:My experience has been that for used metal (some that has rust on it) you are better off with 6010/6011. The 60 series has better penetration properties thru contaminations like rust. 70 series rod has more flux (only one difference) making it easier to make a good looking bead, but is more prone to having voids. For this reason you will never find 70 series rod used in structural steel welds used in the construction industry. Also, 60 series is an AC or DC rod, whereas 70 series should be used DC only.
As of the amps to weld at, advice above is good. Practice, practice, practice. Most starting welders run too cold, making globy looking welds having little penetration. You can run hotter with thicker metal, simply because you can penetrate further without breakout. Good penetration is the key to a good weld.
7018 is a low hydrogen rod so you need to either leave it in an old refridgerator that is sealed good with a light bub in it or just buy enough to do the job because next time you go to use your supply of 7018 it will be junk. Sure makes a purdy weld though....