I went online but could find little about the difference between L56 and S6 wire. I found the amount of different elements in each but that didn't help me much. The small sample roll of L56 didn't last long and today I replaced it with the S6. I don't know if it's because the L56 is old or made in Mexico or what but the S6 worked a lot better than the L56 wire. Night and day different.
Now to find more steel. I welded everything I could find in the garage and yard. My wife is starting to hide things, apparently she doesn't want a 3/16 angle iron deck chair. Go figure.