What Is the AIAG CQI-11 Plating System Assessment and How Do You Use It?

If your organization performs electroplating as a special process, you already know that plating defects often surface downstream—corrosion, poor adhesion, or hydrogen embrittlement—long after the parts leave your line. The AIAG CQI-11 Plating System Assessment (PSA) is the automotive industry’s standard tool to assess and continuously improve your electroplating process management system. This article explains what CQI-11 is, how it works, and how to apply it effectively.

What It Is

CQI-11 is a special process assessment standard published by the Automotive Industry Action Group (AIAG). Its full title is Plating System Assessment, and it applies to electroplating processes (e.g., zinc, nickel, chrome, and other metallic coatings). The assessment is not a product inspection checklist—it is a system audit that evaluates whether your plating facility has robust process controls, operator training, maintenance, and quality management in place.

The standard is one of several AIAG "special process" assessments (alongside CQI-9 for heat treating, CQI-12 for coating, etc.). Its purpose is to ensure that plating suppliers consistently meet customer requirements by identifying risks and driving corrective actions.

How It Works / Key Sections

The CQI-11 assessment is structured into three main parts:

1. Part I – General Requirements (Sections 1–3): These cover management responsibility, quality management system (QMS) basics, and facility/process control. They apply to all plating operations.
2. Part II – Process-Specific Requirements (Sections 4–20): These address specific plating processes (e.g., zinc plating, anodizing, electroless nickel) and include process parameters, testing frequency, and control methods.
3. Part III – Job Audit: This is a hands-on audit of a specific part being plated, verifying that the process documentation matches actual shop-floor practice.

Each section contains a series of questions with three possible ratings:

• "Yes" – the requirement is fully met.
• "No" – the requirement is not met (requires a corrective action plan).
• "N/A" – not applicable to your process (must be justified).

The assessment is scored, and the overall result is typically classified as "Level I" (satisfactory), "Level II" (improvement needed), or "Level III" (unsatisfactory). Many OEMs require suppliers to maintain a Level I rating and to submit corrective action plans for any "No" responses.

A Worked Illustrative Example

Example data (illustrative only)

Suppose your facility performs zinc electroplating. During a CQI-11 audit, Section 5 (Zinc Plating) asks whether you verify the plating bath concentration of zinc chloride and ammonium chloride at least once per shift. You answer "No" because you currently check it daily.

• Assessment result: This is a nonconformance. The auditor records a "No" and requires a corrective action plan.
• Corrective action: You revise your control plan to specify bath analysis every shift, train operators, and update the work instruction. You also add a visual verification step at shift handover.
• Outcome: On the next audit, you answer "Yes," and your overall rating improves from Level II to Level I.

This example shows that CQI-11 is not about passing a one-time inspection—it drives sustainable process discipline.

Common Pitfalls

• Treating it as a checklist, not a system. Merely ticking "Yes" without evidence of effective implementation will fail a good auditor. Be ready to show records, training logs, and calibration certificates.
• Ignoring the Job Audit. Some suppliers spend all their effort on the questionnaire and neglect the hands-on part, where process drift is most visible.
• Applying one process's requirements to all. CQI-11 has process-specific sections; do not assume a generic answer covers all your plating lines.
• Failing to close out "No" responses. A corrective action plan with a deadline is mandatory. Unresolved "No" items can downgrade your entire assessment.

Closing

CQI-11 is your roadmap to a robust electroplating process system—use it proactively, not just when a customer demands it. To simplify your internal audits and track corrective actions, try the free CQI-11 assessment tool at https://www.6sq.com/tools/cqi11/.