Sustainable development is an opportunity for modern enterprises to build unique market advantages, but it is always a kind of compromise between financial benefits and activities focused on environmental protection. It also requires companies to be able to acquire and process information, the sources of which are both internal and external, and to process it into effective knowledge. Quality management processes are an important element supporting knowledge management as a consequence of similar priorities. There are direct and indirect relationships between quality management, knowledge management and sustainable development. Related issues are an important element of modern research, but there are still some knowledge gaps that need to be filled. The authors, based on the literature analysis, concluded that there are no studies defining the relationship between quality management and knowledge management in the context of sustainable development relating to the Polish metal industry. Therefore, the objective of this study is to identify patterns of company activities in the area of knowledge management relating to the improvement of manufacturing processes in companies operating in the metal industry in Poland. At the same time, it was indicated which aspects of knowledge management are at the centre of management's concerns. The study was carried out using a survey questionnaire, with 1930 questionnaires collected from employees in 50 companies selected for the study. The study carried out discovered that in the various areas of the Japanese knowledge management model, companies distribute the emphasis differently, which manifests itself in the procedures and ways of operating. At the same time, there are significant differences between large and medium-sized enterprises, indicating that the scale of operation influences the perception of the importance of individual elements of the knowledge management system in the context of sustainable development.
