Stainless steel
Stainless steels have a long history of application in contact with water due to their excellent corrosion resistance. Applications include a range of conditions from plumbing, potable and waste water treatment to desalination. Types 304 and 316 stainless steels are standard materials of construction in contact with water. However, with increasing chloride contents higher alloyed stainless steels such as Type 2205 and super austenitic and super duplex stainless steels are utilized.
Spoon busk
Galvanized steel spoon busks are not suited for tight lacing because the steel becomes brittle during the manufacturing process. Stainless steel spoon busks, on the other hand, are suitable if reinforced with a layer of flat steel behind the busk. Wissner, a busk and boning manufacturer in Germany makes stainless steel busks. They stopped making galvanized spoon busks because they were breaking under the pressure of tight lacing. If a person buys a spoon busk, they should make sure it is stainless steel and reinforce it with flat boning behind the busk.