Rolled ferritic stainless steel sheet, method for producing the same, and flange part
AssigneeNippon Steel & Sumikin Stainless Steel Corporation
InventorsJunichi Hamada, Koji Ito
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AssigneeNippon Steel & Sumikin Stainless Steel Corporation
InventorsJunichi Hamada, Koji Ito
Estimating the term…
The present invention provides a rolled ferritic stainless steel material excellent in corrosion resistance and toughness, in particular suitable as a material for a flange and a method for producing the same and flange part. The rolled ferritic stainless steel material contains, by mass %, C: 0.001 to 0.08%, Si: 0.01 to 1.0%, Mn: 0.01 to 1.0%, P: 0.01 to 0.05%, S: 0.0002 to 0.01%, Cr: 10.0 to 25.0%, and N: 0.001 to 0.05%, has a balance of Fe and unavoidable impurities, has a thickness of 5 mm or more, and has an area ratio of crystal grains with a <011> direction within 15° from the rolling direction of 20% or more in a cross-section parallel to the rolling direction at any location between the left and right ends of the steel sheet.
A method of production of a hot rolled steel sheet or a hot rolled steel strip comprised of ferritic stainless steel, comprising performing a hot rolling process making a hot rolling finishing temperature 805° C. to 880° C. and a coiling process at a coiling temperature of 300 to 470° C. or less,
Dependencies are inferred from the claim text.