The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 03, 2019
Filed:
Aug. 24, 2016
Nippon Yakin Kogyo Co., Ltd., Tokyo, JP;
Hidekazu Todoroki, Yokohama, JP;
Fumiaki Kirihara, Kawasaki, JP;
NIPPON YAKIN KOGYO CO., LTD., Tokyo, JP;
Abstract
Fe—Cr—Ni—Mo alloy having superior surface properties and a method for producing the same using a commonly used apparatus at low cost. The Fe—Cr—Ni—Mo alloy has (% indicates mass %): C: ≤0.03%, Si: 0.15 to 0.5%, Mn: 0.1 to 1%, P: ≤0.03%, S: ≤0.002%, Ni: 20 to 32%, Cr: 20 to 26%, Mo: 0.5 to 2.5%, Al: 0.1 to 0.5%, Ti: 0.1 to 0.5%, Mg: 0.0002 to 0.01%, Ca: 0.0002 to 0.01%, N: ≤0.02%, O: 0.0001 to 0.01%, freely contained components of Co: 0.05 to 2% and Cu: 0.01 to 0.5%, Fe as a remainder, and inevitable impurities, wherein MgO, MgO.AlOspinel type, and CaO—AlO—MgO type are contained as oxide type non-metallic inclusions, ratio of number of MgO.AlOspinel type to all oxide type non-metallic inclusions is ≤50%, and CaO—AlO—MgO type contains CaO: 30 to 70%, AlO: 5 to 60%, MgO: 1 to 30%, SiO: ≤8%, and TiO: ≤10%.