Most of the sunshade hardware are made of stainless steel. Because they work in hot summer days or when it rains heavily, we generally use stainless steel with good oxidation resistance and corrosion resistance. Stainless steel will use blunt to prevent oxidation. So, let's take a look at the passivation principle today.
Passivation is a method of converting a metal surface into a state in which it is not easily oxidized, and retarding the corrosion rate of the metal. In addition, an active metal or alloy in which the chemical activity is greatly reduced and becomes a noble metal state, also called passivation