Pickling & Passivation Paste Gel

Product Description

Pickling and Passivation Paste Gel contains a combination of hydrofluoric acid and nitric acid which can cause serious burn injuries. This is primarily used to post weld clean stainless steels and can be applied by brush or by a spray on process. The paste can be applied either directly to the weld or following mechanical dressing of the weld. Pickling and Passivation Paste Gel removes any resulting free iron or other surface contamination, areas of chromium depletion being removed by the hydrofluoric acid component. Pickling is a pre-passivation process of treating stainless steel parts with an acid solution, typically hydrochloric or sulfuric acid, which can remove oxide scale and heat tint while dissolving steel flecks embedded in the part. 

Specification