Dynamic Material Flow Analysis of Stainless Steels in Japan

Dynamic material flow analysis of stainless steels in Japan during 1956-2014 has been conducted. End uses of stainless steels were divided into 9 categories, i.e. construction, industrial machinery, electrical and electronic equipment, household and commercial appliance, passenger vehicle, truck and bus, other transportation, container, and other products. Stainless steels were divided into ferritic stainless steels and austenitic stainless steels. It was found that in-use stocks of austenitic stainless steels for construction, industrial machinery, electrical and electronic equipment, household and commercial appliance, truck and bus, container, and other products have reached constant levels. On the other hand, only those for truck and bus, container have been reached constant levels for ferritic stainless steels. It was estimated that the maximum in-use stock per capita for ferritic, austenitic and the total stainless steels was 59 kg/cap., 106 kg/cap., 163 kg/cap., respectively.