28/08/2026
๐ Quality Problems Become Expensive When You Measure Them Too Late.
Manufacturing quality isnโt controlled by a single number.
To understand how a process is really performing, teams need metrics that reveal good output, rework, defects, variation, and process capability.
Six important quality metrics help build that picture:
Quality Rate shows how much of the total production meets quality requirements, while Rework Percentage highlights how much output requires additional work because of defects or quality issues.
DPPM and DPMO help quantify defect performance at a much larger scale.
DPPM looks at defective parts per million units produced, whereas DPMO considers the number of defect opportunities making it useful when one product can have multiple opportunities for defects.
But defect counts alone donโt tell you whether the process is capable.
Thatโs where Cp and Cpk become important. Cp evaluates the potential capability of a process relative to specification limits, while Cpk also considers how well the process is centered within those limits.
Together, these metrics help quality professionals move from simply counting defects to understanding process performance and preventing future problems.
๐ก The goal of quality measurement isnโt to create more reports itโs to create better decisions.
Which quality metric gives you the most valuable insight into your process?
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