Did you test it to make sure it’s not nickel plated steel?
Scratch it and put in salt water, it shouldn’t rust.
Yea, I would say 3-4 strips; but I have a feeling at some point stacking becomes counter productive and might not increase your ampacity linearly. Plus, more spot welds = more things to fail.
Don’t have experience with that myself, I always use wide 0.2 nickel with a good spot welder.
Cheap or good, you have to pick one
