Due to its excellent corrosion resistance and heat resistance, stainless steel is enjoying increasing demand in a wide range of fields, from kitchen equipment, home electrical appliances, automotive exhaust system parts, industrial machinery, construction, civil structures, nuclear power, and so on. In 2001, world stainless steel production was less than 20 million tons per year, but this had risen to exceed 28 million tons in 2007. Stainless steel has grown to a level where it truly plays a key role in supporting the foundations of society. In recent years, many examples of applications aiming at maintenance-free structures and life cycle cost reduction have seen in the construction field. Thus, stainless steel is also positioned as a global green material.
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