ASTM A967 Passivation Standard

Able Electropolishing provides metal passivation services that meet the rigid standards of the American Society for Testing and Materials (ASTM). The standards that collectively make up the ASTM A967 passivation specification ensure that nitric and citric stainless steel passivation is performed properly and with quality results.

What is ASTM A967 Passivation?

The ASTM A967 passivation standard applies to the cleaning, passivation and testing of stainless steel parts. Chemical passivation removes free iron and other surface contaminants from stainless steel parts, improving corrosion resistance. Stainless steel passivation performed to the ASTM A967 standards meets these standards by passing tests that confirm its effectiveness, particularly as it pertains to removing free iron from the cold-worked surfaces. These ASTM-approved tests may include:

  • Water immersion testing
  • Salt spray testing
  • Copper sulfate testing
  • High humidity testing


The ASTM provides instructions and acceptance criteria for these and other tests that can verify the quality of a stainless steel passivation operation.

Stainless Steel Passivation and More

Able Electropolishing provides metal passivation services that meet the ASTM A967 standards, as well as other finishing treatments that improve the corrosion resistance of stainless steel and various other alloys. By meeting standards set by the ASTM and other organizations, we can ensure consistently-high quality for a broad range of metal parts across many industries.

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