304 | Offers resistance to corrosion, has good formability and can be readily welded by all methods. One of the most commonly used grades across the industry. |
304L | Extra low carbon avoids harmful carbide precipitation due to welding. Same corrosion resistance as 304 with lower mechanical properties. |
316 | Better pitting and corrosion resistance than 304, as well as higher strength at elevated temperatures. 316 can be used for valves, marine equipment, pumps, and chemical equipment. |
316L | Extra low carbon avoids harmful carbide precipitation due to welding. Same excellent corrosion resistance as 316. It exhibits the same high strength, toughness and workability as 304 alloys. |
409 | Lowest cost in terms of stainless. Used in automotive exhaust systems. Its resistance to oxidation and corrosion is good, the finish or look does not matter. |