| ‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘ KAWASAKI STEEL TECHNICAL REPORT No.9 ( March 1984 ) ‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘ |
| A Low (C+N)-13 Cr Martensitic Stainless Steel, RIVER LITE 410DB, for Brake Disk of Motorcycle Keiichi Yosioka, Shigeharu Suzuki, Bunryo Ishida, Masayoshi Horiuchi, Makoto Kobayashi |
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Synopsis : Medium carbon martensitic stainless steels widely used for the manufacture of motorcycle brake disk have some shortcomings such as the indispensability of strictly-controlled quenching for heart treatment of the disk and the deterioration of corrosion resistance due to tempering. RIVER LITE 410DB, newly developed to solve the above problems, is characterized by a high Mn content and an adequate low level of (C+N) content. The high Mn content is aimed to enlarge temperature range in which fully austenitic structure exists at quench temperature, and the control of (C+N) content is to obtain a suitable hardness of martensite formed on quenching. The steel can readily obtain hardness suitable for the brake disk by only quenching without strict control of the conditions for heat treating and is superior to conventional steels in toughness and corrosion resistance. |
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