Japanese steelmaker Nippon's subsidiary Nippon Steel & Sumikin Stainless Steel Corporation (NSSC) announced on July 22 that it has developed the world's first Sn-added low-interstitial ferritic steel grades, named the ‘FW (forward) series'.
This was achieved by making use of NSSC's own seed technology that can drastically improve the corrosion resistance of ferritic stainless steel by adding a micro amount of tin (Sn), NSSC said, adding that the FW series steel exhibits not only improved corrosion resistance but also increased workability.
NSSC also announced that from July it has begun marketing and distributing the first FW series steel, ‘NSSC FW1', a highly corrosion-resistant, low-chrome, and low-interstitial ferritic stainless steel, which consists of 14 percent Cr but which has a corrosion resistance level equivalent to 18 percent Cr stainless steel grades.