Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Piston Ring Co Ltd
Original Assignee
Nippon Piston Ring Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Piston Ring Co LtdfiledCriticalNippon Piston Ring Co Ltd
Priority to JP3794975ApriorityCriticalpatent/JPS51112711A/en
Publication of JPS51112711ApublicationCriticalpatent/JPS51112711A/en
PURPOSE: To provide a valve sheet having excellent properties in heat-resistance, anti-corrosion, anti-friction and machining, and method of producing the same.