| ‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘ KAWASAKI STEEL TECHNICAL REPORT No.41 ( October 1999 ) Advances in Iron and Steel Technologies, Commemorating the 30th Anniversary of Technical Research Laboratories ‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘ |
| Recent Activities in Research of Stainless
Steels Susumu Satoh, Takumi Ujiro, Kazuhide Ishii |
| Synopsis: The demand and requirements for advanced properties of stainless steels for automotive exhaust systems, buildings, and electrical products are increasing. High performance ferritic stainless steels for automotive exhaust manifolds (R429EX: 15Cr-0.9Si-0.45Nb), catalytic converters (R20-5USR: 20Cr-5Al-La-Zr), and mufflers (R436LT: 18Cr-1.2Mo-Ti, R432LTM: 18Cr-0.5Mo-Ti) were developed on the basis of the studies of thermal fatigue, high temperature oxidation, and condensate corrosion. High purity ferritic stainless steels (R30-2: 30Cr-2Mo, R24-2: 24Cr-2Mo, R445MT: 22Cr-1.5Mo, RSX-1: 18Cr-1.5Mo) for buildings were also developed on the basis of the study of atmospheric corrosion. Investigations into ridging mechanism led to the improvement of the formability of ferritic stainless steels (R430UD: 17Cr, RSX-1). Kawasaki Steel produces these excellent ferritic stainless steels by using newly installed production facilities in Chiba Works. |
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