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Passivation of stainless steel for harsh environment

0
F
2

Hello!

I’m working on a part that will be used in a harsh environment, so I was thinking of stainless steel 304 as a suitable material. I also would like to add a passivation finish to improve the corrosion resistance of the part.

Are there standardized grades or methods of passivation for stainless steel? What “grade” or specific type of passivation should I specify on the engineering drawing to ensure optimal corrosion resistance? There’s lots of info out there, but I’m a bit confused. Can anyone offer some straightforward guidelines?

Thanks in advance.

Solved by Joao Clemencio

Hello FSharaf,

There are indeed several standards and types of passivation.

The main standard grades you have available are: ASTM A967, AMS 2700 and ISO 16048.

In order to have a to ensure optimal corrosion I would specify "Passivate per ASTM A967, Citric Acid Method" on your engineering drawing.

ASTM A967: This standard covers the chemical passivation treatments for stainless steel, ensuring the part meets industry standards.
Citric Acid Passivation: It's environmentally safer and effective for stainless steel 304.

    • F

      Hello!

      I’m working on a part that will be used in a harsh environment, so I was thinking of stainless steel 304 as a suitable material. I also would like to add a passivation finish to improve the corrosion resistance of the part.

      Are there standardized grades or methods of passivation for stainless steel? What “grade” or specific type of passivation should I specify on the engineering drawing to ensure optimal corrosion resistance? There’s lots of info out there, but I’m a bit confused. Can anyone offer some straightforward guidelines?

      Thanks in advance.

      0
    • Xometry Engineer

      Hello FSharaf,

      There are indeed several standards and types of passivation.

      The main standard grades you have available are: ASTM A967, AMS 2700 and ISO 16048.

      In order to have a to ensure optimal corrosion I would specify “Passivate per ASTM A967, Citric Acid Method” on your engineering drawing.

      ASTM A967: This standard covers the chemical passivation treatments for stainless steel, ensuring the part meets industry standards.
      Citric Acid Passivation: It’s environmentally safer and effective for stainless steel 304.

      0
      Reply
      • F
        Joao Clemencio

        Hello Joao,

        Thanks for the info. I’ll specify this on the drawing, appreciate your help!

        0
        Reply
Passivation of stainless steel for harsh environment
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