PERSONAL ORNAMENT AND METHOD FOR PRODUCING PERSONAL ORNAMENT
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United States of America Patent
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Jul 1, 2021
app pub date -
Dec 17, 2020
filing date -
Dec 26, 2019
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Abstract
A personal ornament has excellent corrosion resistance, in which predetermined chemical components are included, the remainder includes Fe and impurities, a structure contains austenite at 95% or more in area %, when a diameter of a circle having a smallest area capable of including one intermetallic compound inside is defined as a size of the intermetallic compound, the number of intermetallic compounds in which the size of the intermetallic compound is 150 μm or more is 0, and the number of intermetallic compounds in which the size is 13 μm or more and less than 150 μm is 3 or less, an average equivalent circle diameter of the austenite is 150 μm or less, and a PRE defined by the following formula (1) is 40 or more.
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