I am working on a concept for an outdoor garden gate. It would involve layering and alternating sheets of stainless and copper or brass with areas cut out in order to achieve a specific variegated pattern. I am aware that galvanic corrosion can occur between copper and mild steel, but am not certain about the potential chemical interactions arising from stainless being in direct contact with copper or brass... Can someone more well versed in metallurgy please advise?

Close up of sculpture with mature plantings

Site before sculpture was installed

My first sculpture with stainless steel. Yes it's sign, but it is a piece of art. I am slowly raising interest in art and sculpture to a small town.