AISI SUS 201 203 304 316 316L 304l 904 2B BA no.4 8k surface mirror finish 4x8 size cold rolled stainless steel sheet

201: A commonly used austenitic stainless steel with good corrosion resistance and moderate strength.
203: There isn't a widely recognized stainless steel grade called "203." It is possible that it refers to a specific proprietary or less common grade.
304: A popular austenitic stainless steel grade known for its excellent corrosion resistance, versatility, and ease of fabrication.
316: An austenitic stainless steel grade that contains molybdenum, which enhances its corrosion resistance, particularly against chlorides and acids.
316L: A low-carbon version of 316 stainless steel, providing improved weldability and resistance to sensitization (carbide precipitation during welding).
304L: Similar to 316L, it is a low-carbon version of 304 stainless steel, offering better weldability and corrosion resistance in certain environments.
904: Refers to a specific stainless steel grade known as 904L, which has high corrosion resistance, especially against strong acids like sulfuric acid.
Surface Finishes:
2B: A smooth, semi-reflective finish obtained through a cold-rolling process, followed by annealing and descaling.
BA: Stands for "bright annealed." It is a highly reflective, mirror-like finish achieved by annealing in a controlled atmosphere furnace.
No.4: Also known as a brushed or satin finish, it has a unidirectional texture obtained by mechanical polishing.
8K: A high-gloss, mirror-like finish achieved through an extensive polishing process.
4x8 Size: Refers to the standard size of the stainless steel sheet, which is 4 feet by 8 feet (approximately 1.2 meters by 2.4 meters).
Cold Rolled: Indicates that the stainless steel sheet was produced through a cold rolling process, which involves passing the metal through rollers at room temperature to reduce thickness and improve surface finish.
In summary, the information you provided describes various stainless steel grades (201, 203, 304, 316, 316L, 304L, 904) with different surface finishes (2B, BA, No.4, 8K). The stainless steel sheets are cold-rolled and have a standard size of 4x8 feet.