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US 2025/0059615 A1Published application
Ferritic stainless steel sheet and production method therefor
AssigneeJfe Steel Corporation
InventorsShuji NISHIDA, Ayako TA, Hirokazu TANAKA, Yasutada SUNAMORI
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Abstract
Provided is a ferritic stainless steel sheet having both high whiteness and high image clarity. A surface of the ferritic stainless steel sheet is made up of plateau portions and valley portions, an area ratio of the plateau portions is 30% to 70%, Sdr of the plateau portions is 0.100 or less, Sdq of the valley portions is 0.20 or more, Sal is 50 μm or less, and Str is 0.30 or more.
Claims17
A ferritic stainless steel sheet, wherein a surface of the ferritic stainless steel sheet is made up of plateau portions and valley portions,
- an area ratio of the plateau portions is 30% to 70%,
- Sdr of the plateau portions is 0.100 or less, and Sdq of the valley portions is 0.20 or more, and
- Sal is 50 μm or less, and Str is 0.30 or more,
- where Sdr, Sdq, Sal, and Str are a developed interfacial area ratio of scale-limited surface, a root mean square gradient of scale-limited surface, an autocorrelation length, and a texture aspect ratio defined in JIS B 0681-2:
- 2018, respectively.
2 more elements
(canceled)
Dependencies are inferred from the claim text.