https://www.pipenipples.com/stainless-steel-pipe-nipples.html Advantages of Stainless Steel Pipe Nipples While similar to carbon steel in makeup, stainless steel is defined by having more chromium content. Compared to standard steel, stainless steel pipe nipples are more resistant to rust, corrosior, and stains. The exact amount of resistance to corrosion and heat is indicated by the grade of the stainless steel.