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US 6,207,103 B1Granted
Fe-Cr-Si steel sheets having excellent corrosion resistance and method for manufacturing the same
AssigneeKawasaki Steel Corporation
InventorsShigeaki Takajo, Takako Yamashita, Akihiro Matsuzaki, Osamu Kondo
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Abstract
Fe—Cr—Si steel sheet having an excellent corrosion resistance and high toughness and method for manufacturing the same; the amount of Cr is about 10-30 wt %, the total amount of C and N is not more than about 100 ppm and the remainder consists of Fe and incidental impurities; when a cast piece of this steel is subjected to hot rolling to roll into a thickness of not more than about 3 mm, the hot rolled sheet can be subjected to cold rolling or to warm rolling without annealing.
Claims17
Steel sheet comprising Fe, Cr and Si, wherein:
- the content of Cr is about 10-30 wt %,
- the content of Si is about 3.5-10 wt %,
- the total content of C and N is not more than about 100 ppm,
- the remainder of said sheet comprises Fe and incidental impurities, and
- said steel sheet having a corrosion resistance index of at least about 500 mV, expressed as pitting corrosion potential in a 3.5 vol % aqueous solution of NaCl at 30° C. at a current density of 10 μA/cm2.
2 more elements
Dependencies are inferred from the claim text.