Is the 8 in. x 12 in. Galvanized Steel Flashing Shingle rust proof?

Rust (or technically iron oxide) is present in all material containing iron.

Rust (or technically iron oxide) is present in all material containing iron. The shingles are made from galvanized then painted material to protect it from moisture which will accelerate the process of rusting. However, after being painted the material is cut. In this product’s intended use, the edges would be covered by shingles protecting the edges from getting wet, and therefore accelerating the rusting process. If the edges are exposed, it will rust, and furthermore, if the paint is scratched deeply during the installation, it will rust where it is scratched.