Methodology of steel cleanliness assessment

Today a good metal cleanliness is required due to the general trend of weig ht saving by using thinner products. This means that the metal is subjected to increased deformations during processing. It is therefore important to define and to improve the steelmaking process leading to the suitable steel cleanliness and to be able to assess it for t he relevant products. Correlated results were obtained by Usinor and NSC by using several techniq ues and samples. Recommendations for the industrial application of cleanlin ess assessment were formulated.