Nonconforming products are those that do not meet their specification. When a product design is completed, engineers assign appropriate measurements to each part of each component. This even includes the type of raw material the part is made from. When the final part deviates from this specification, it is said to be nonconforming. This is why a good quality control process including an inspection is important, to identify any nonconformance and ultimately provide a nonconforming material report.