| 摘要 |
The present invention provides a martensitic stainless steel plate for a bicycle disc brake rotor that demonstrates excellent braking characteristics and noise suppression performance as a bicycle disc brake rotor, and can be used in an as-quenched state. The martensitic stainless steel plate according to the present invention is a low-carbon and low-nitrogen stainless steel satisfying C: 0.070-0.120% and N: 0.015-0.060%, with C+N: 0.09-0.15%. The martensitic stainless steel plate is characterized in that Cu: 0.1% or less and Mn: 1.0-1.4%, the remainder is Fe and unavoidable impurities, ?p, which is an index representing the phase balance during hot rolling, is 80-120, and the HRC hardness after quenching is 38-44. |
