Ferritic stainless steel for automotive exhaust system, which have excellent corrosion resistance against condensate, moldability, and high-temperature oxidation resistance, and method for manufacturing same
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United States of America Patent
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Nov 27, 2018
Grant Date -
Dec 3, 2015
app pub date -
Dec 27, 2012
filing date -
Dec 24, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
Provided is a ferritic stainless steel having excellent corrosion resistance against condensate, moldability, and high-temperature oxidation resistance, wherein the ferritic stainless steel is capable of being manufactured in an economically advantageous manner without adding expensive alloying elements. The ferritic stainless steel includes, by weight %, C: greater than 0 and 0.01% or less, Cr: 9 to 13%, Si: 0.5 to 1.0%, Mn: greater than 0 and 0.5% or less, P: greater than 0 and 0.035% or less, S: greater than 0 and 0.01% or less, Ti: 0.15 to 0.5%, N: greater than 0 and 0.01% or less, Sn: 0.05 to 0.5%, and the remainder is Fe and inevitable impurities, wherein Sn concentrated at the surface part of the stainless steel is 10 times or more than Sn concentrated at the base part.
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International Classification(s)
- C23C:COATING METALLIC MATERIAL; COATING MATERIAL WITH M....
- F01N:GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHIN....
- C21D:MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS....
- C25F:PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIAL....
- B32B:LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA....
- C22C:ALLOYS
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