Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Tadaharu Kido0
Takashi Rokutanda0
Tomohisa Arai0
Date of Patent
June 22, 2010
0Patent Application Number
105141960
Date Filed
May 14, 2003
0Patent Primary Examiner
Patent abstract
A cutter is composed of a Ni—Cr alloy containing from 32 to 44 mass percent of Cr, from 2.3 to 6.0 mass percent of Al, the balance being Ni, impurities, and additional trace elements and having a Rockwell C hardness of 52 or more. This Ni—Cr alloy provides a cutter produced with a superior workability and by a significantly simplified process, having a low deterioration in the hardness even when heated in use, having excellent corrosion resistance and low-temperature embrittlement resistance, and satisfactorily maintaining the cutting performance for a long time.
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