INOX Passivation Ltd are specialists in the onsite chemical treatment of stainless steel. From pre-commissioning cleaning, passivation and validation, to the ongoing maintenance and restoration of in-service equipment and surfaces; Our range of products and services have been engineered to
ensure your continued compliance with industry specific requirements.
Stainless steels get their corrosion resistant qualities because of an extremely thin (invisible) layer that covers the surface. This is the chrome-oxide layer (or passive layer) and it forms spontaneously when the chromium within stainless steel is exposed to the oxygen in normal atmospheric conditions.
ASTM A967 ‘Standard Specification for Chemical Passivation Treatments for Stainless Steel Parts’ defines passivation as:
“Stainless steels are auto-passivating in the sense that the protective passive film is formed spontaneously on exposure to air or moisture. The presence of exogenous surface contamination, including dirt, grease, free iron from contact with steel tooling, and so forth, may interfere with the
formation of the passive film. The cleaning of these contaminants from the stainless steel surface will facilitate the spontaneous passivation by allowing the oxygen uniform access to the surface. The passive film may be augmented by chemical treatments that provide an oxidising environment for the stainless steel surface.”
INOX Passivation Ltd’s principle purpose is to optimise the surface condition of your stainless steel parts, offering a variety of cleaning and chemical passivation processes thereby ensuring that your equipment/components go through their service life free of corrosion.