20240026507. FERRITIC STAINLESS STEEL WITH IMPROVED GRAIN BOUNDARY EROSION, AND MANUFACTURING METHOD THEREOF simplified abstract (POSCO Co., Ltd)
Contents
FERRITIC STAINLESS STEEL WITH IMPROVED GRAIN BOUNDARY EROSION, AND MANUFACTURING METHOD THEREOF
Organization Name
Inventor(s)
Soo-ho Park of Pohang-si Gyeongsangbuk-do (KR)
Dong-hoon Kim of Pohang-si, Gyeongsangbuk-do (KR)
Jae-seok Park of Pohang-si, Gyeongsangbuk-do (KR)
Youngjun Kim of Pohang-si, Gyeongsangbuk-do (KR)
FERRITIC STAINLESS STEEL WITH IMPROVED GRAIN BOUNDARY EROSION, AND MANUFACTURING METHOD THEREOF - A simplified explanation of the abstract
This abstract first appeared for US patent application 20240026507 titled 'FERRITIC STAINLESS STEEL WITH IMPROVED GRAIN BOUNDARY EROSION, AND MANUFACTURING METHOD THEREOF
Simplified Explanation
The disclosed patent application describes a ferritic stainless steel with reduced grain boundary erosion. The steel composition includes various elements such as carbon, silicon, manganese, chromium, nitrogen, aluminum, nickel, molybdenum, phosphorus, sulfur, iron, and impurities. The steel composition satisfies a specific parameter called ACL, which is defined by a formula provided in the application.
- The ferritic stainless steel composition includes carbon, silicon, manganese, chromium, nitrogen, aluminum, nickel, molybdenum, phosphorus, sulfur, iron, and impurities.
- The steel composition has specific ranges of each element, expressed in weight percentage.
- The ACL parameter of the steel composition falls within a specific range defined by a formula.
- The steel composition aims to reduce grain boundary erosion in ferritic stainless steel.
Potential applications of this technology:
- Automotive industry: The steel composition can be used in the manufacturing of automotive components, such as exhaust systems, where resistance to grain boundary erosion is important.
- Chemical processing: The steel composition can be utilized in equipment and structures used in chemical processing plants, where corrosion resistance and reduced grain boundary erosion are crucial.
- Power generation: The steel composition can find applications in power plants, particularly in components exposed to high temperatures and corrosive environments, such as boilers and heat exchangers.
Problems solved by this technology:
- Grain boundary erosion: The disclosed steel composition aims to reduce grain boundary erosion, which can lead to material degradation and failure in various applications.
- Corrosion: The specific composition of the steel helps improve corrosion resistance, addressing the problem of material degradation in corrosive environments.
Benefits of this technology:
- Improved durability: The reduced grain boundary erosion in the steel composition enhances the durability and lifespan of components made from this material.
- Corrosion resistance: The steel composition provides improved resistance to corrosion, increasing the reliability and performance of the applications where it is used.
- Cost savings: By reducing grain boundary erosion and improving corrosion resistance, the technology can lead to cost savings by minimizing the need for frequent repairs or replacements of affected components.
Original Abstract Submitted
disclosed is a ferritic stainless steel with reduced grain boundary erosion. a ferritic stainless steel with reduced grain boundary erosion according to an embodiment includes, in percent by weight (wt %), 0.005 to 0.1% of c, 0.01 to 1.0% of si, 0.01 to 1.5% of mn, 13 to 18% of cr, 0.005 to 0.1% of n, 0.005 to 0.2% of al, 0.005 to 0.1% of ni, 0.003% or less of mo, 0.05% or less of p, 0.005% or less of s, and the remainder being fe and impurities, and satisfies an acl, defined by formula (1) below, of 900 or more and 990 or less:
