This document specifies the method for the verification of models for the determination of the property data of steels and the validation of the modelling process. It is applicable where modelling of mechanical or physical properties is used to substitute conventional testing for specific inspection. Models can be based on statistical data, thermo-physical data or indirect measurement (e.g. measurement of magnetic or ultrasonic data), or a combination of these methods. This document applies only for providing the properties of rolled and/or heat-treated products such as plates, sheets, strip, sections and bars. This document is used to demonstrate the ability of the model to supply property data which is equivalent to data, measured by conventional testing. Any self-learning system is excluded from the scope. NOTE A self-learning model is a model which changes its internal parameters by itself.