Passivation improves the corrosion resistance properties of components made of precipitation-hardened, austenitic and martensitic steels. Passivation treatments improve the surface condition of stainless steel by dissolving iron that has been imbedded in the surface during forming or machining. If allowed to remain, the iron can corrode and give the appearance of rust spots on the stainless steel.

Passivation, which consists of immersing stainless steel component in a solution of Citric or Nitric acid without oxidizing salts, it will dissolve the embedded iron and restore the original corrosion-resistant surface by forming a thin, transparent oxide film.

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Medical • Automotive • Aerospace • Recreational


  • Maximum stainless steel corrosion protection without plating.
  • Superior clean surface.
  • Eliminates iron contamination reactions with other materials.
  • No rust discoloration.
  • Surface prepared for priming and painting.
  • Specifications
  • AMS-QQ-P-35
  • AMS 2700
  • ASTM A-380
  • ASTM A-967
  • Testing
  • Copper Sulfate