|
|
 |
Increase the corrosion resistance with Pickling or Passivation
 Stainless steel is naturally corrosion resistant due to the presence of a transparent surface layer, or film that forms on clean surfaces when exposed to the atmosphere or certain oxidizing conditions. Passivating the surface of the stainless in an acid mixture containing oxidizing agents improves and enhances the formation of this corrosion resistant layer.
At Apache Stainless Equipment Corporation, we recommend "pickle passivation" over citric or nitric, passivation as the final cleaning operation after all fabrication operations such as forming, welding, machining have been completed and after any mechanical cleaning operations.
Check out the results on a typical weld seam subjected to salt water spray testing:
 The top sample is Apache Pickle Passivation
The middle sample is Citric passivation
The bottom sample is Nitric passivation |
|
