Passivation

Passivation is the chemical treatment of a stainless steel with a mild oxidant such as Avesta FinishOne Passivator 630, with the purpose of removing free iron from the surface and speed up the process of forming a protective/passive layer.

The term passivation is commonly applied to several distinctly different operations or processes relating to stainless steels. In order to avoid ambiguity in the setting of requirements, it may be necessary for the purchaser to define precisely the intended meaning of passivation.

Passivation is not effective for the removal of heat tint or oxide scale on stainless steel.

Removal of heat tint or oxide is necessary for passivation to be effective.