Advantages

Name the stainless grade

Specify the exact substrate for process compatibility review.

Reference the requirement

List the governing process specification and revision.

Protect critical features

Mark masked areas and dimensions that require post-process checks.

Request evidence explicitly

Identify the records or reports required for acceptance.

Passivation is a specification-led finish

Passivation services are commonly requested for stainless steel parts, but the exact alloy and customer requirement must be stated. Include the governing process specification and revision rather than relying on the general term alone. Compatibility and acceptance should be reviewed against the actual part and material.

Identify surfaces and process sequence

Provide the material grade, drawing revision and finish condition. Mark areas to mask, surfaces that must remain unchanged and dimensions that should be checked after treatment. If machining residue, heat tint or another condition requires a separate operation, list it explicitly instead of assuming passivation covers it.

Define records and acceptance

State whether the project requires a certificate, test report, lot traceability or another record. Identify the inspection method and quantity. The finish name alone does not establish a corrosion result or customer qualification.

For broad finishing scope, see CNC surface finishing services. For a different coating request, see Alodine coating services.

Passivation RFQ checklist

  • Stainless grade and part revision
  • Process specification and revision
  • Surfaces, masking and dimensional controls
  • Inspection method and requested records
  • Quantity, packaging and approval requirements

Confirm the specified process, scope and acceptance evidence before order release.

Frequently Asked Questions

What information do passivation services require?

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Provide the stainless grade, part revision, process specification, masking, inspection method and record requirements.

Does passivation guarantee corrosion performance?

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No blanket result should be assumed. Use the customer specification and its acceptance evidence for the application.

Does passivation remove heat tint or machining marks?

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Do not assume it does. Identify any separate cleaning, finishing or surface-condition requirement.

Should critical dimensions be checked after passivation?

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State which dimensions matter and when inspection should occur according to the drawing and process scope.

How is passivation different from Alodine coating?

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They refer to different finishing processes and substrates. Specify the required treatment rather than substituting the names.

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