We use the terms Brass and Bronze interchangeably because there is only about 1-2% difference in the alloys. Brass/Bronze ages very similar to Copper and in fact when they both reach the Black phase of their patina, they are very hard to tell apart. Unlike Copper, Brass/Bronze is not likely to reach the Verdigris Patina color, rather it would stay Black.

Outdoor Natural Zinc will start to patina pretty quickly with white oxidation. It will get just a little bit darker as it ages and with the white rust it makes a really nice aged gray look on the material.

The nature of Stainless Steel is to resist corrosion so due to it's make up, it stays just about the same as the day the piece was purchased. If your location an is an ocean locale, you could experience some oxidation on outdoor 304 Stainless so if that's the case please contact us and we can discuss options.