Stainless Steel Black Oxide Coating

Superior black oxide finishes for stainless steel room temperature 65 85 f room temperature black oxide processes are best for quick safe and convenient in house and even at home blackening.

Stainless steel black oxide coating.

Black oxide or blackening is a conversion coating for ferrous materials stainless steel copper and copper based alloys zinc powdered metals and silver solder. It is used to add mild corrosion resistance for appearance and to minimise light reflection. This means that the black oxide is not deposited on the surface of the substrate like nickel or zinc electroplating. Black oxide is a form of coating used as a finish for ferrous metals stainless steel and copper and its alloys.

It is used to add mild corrosion resistance for appearance and to minimize light reflection. Hot black oxide converts the surface into magnetite. Cold black oxide is not an oxide conversion coating. One of its advantages over other coatings is its minimal buildup.

To achieve maximum corrosion resistance the black oxide must be impregnated with oil or wax. The black oxide process is a chemical conversion coating. Instead the black oxide coating is produced by a chemical reaction between the iron on the surface of the ferrous metal and the oxidizing salts present in the black oxide solution. Black oxides on stainless steel and or brass alloys will yield excellent corrosion protection primarily due to their inherent properties.

Use a room temperature blackening process to give steel parts satiny grey black finishes. Hot black oxide involves hot baths of sodium hydroxide the nasty stuff in drain cleaner nitrates and nitrites. It is a deposited copper selenium compound. To achieve maximal corrosion resistance the black oxide must be impregnated with oil or wax.

Black oxides on steel are not suitable for severe outdoor applications or corrosive environments but they can provide superior humidity cabinet results with proper supplementary coating.