STAINLESS STEEL FOIL WITH FLATTENING FILM
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United States of America Patent
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Issued Date -
Aug 1, 2024
app pub date -
May 16, 2022
filing date -
May 17, 2021
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Abstract
Stainless steel foil with a flattening film reducing the number of pits present on the stainless steel foil surface and free of cracks occurring at the flattening film, that is, stainless steel foil with a flattening film, comprising the stainless steel foil having a composition comprising stainless steel constituents and having a balance comprised of Fe and impurities, inclusions having particle diameter 2.00 μm or more comprising Al2O3:30 mass % or less and MgO:10 mass % or less with respect to a total mass of the particle diameter 2.00 μm or more inclusions, among the particle diameter 2.00 μm or more inclusions, the number of inclusions having particle diameter more than 5.00 μm present on the surface being 20/cm2 or less, and having a sheet thickness of 5.0 μm or more and 100.0 μm or less and the flattening film having a film thickness of 0.3 μm or more and 5.0 μm or less on at least one surface of the stainless steel foil.
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