Developed in collaboration with volunteers from OEMs, Tier 1 suppliers, heat treat suppliers, and calibration companies that service the heat treat industry, the Special Process: Heat Treat System Assessment 4th edition (CQI-9) is a comprehensive audit covering the most common heat treat processes employed by the automotive industry, intended to provide a common approach to a heat treat management system for automotive production and service part organizations.

Find out how to effectively use the Heat Treat and Soldering guidelines to evaluate the control and management of your processes and deliver quality parts and materials.

The CQI-9 4th Edition is a comprehensive audit covering the most common heat treat processes employed by the automotive industry. Intended to provide a common approach to a heat treat management system for automotive production and service part organizations, the 4th edition now includes additional best practices, along with new and modified requirements and clarifications for supply organizations to consider in making their own self-assessments.