321 stainless steel plate or 316L stainless steel plate?

321 stainless steel plate or 316L stainless steel plate

321 stainless steel plate is on the basis of 304 stainless steel to add titanium elements, belongs to austenitic stainless steel, its Chinese brand is 06Cr18Ni11Ti. It is characterized by the chemical composition of titanium, so that it has better intergranular corrosion resistance and high temperature strength, suitable for use in the high temperature state of 430 to 900℃. It is used for aircraft exhaust pipes, boilers and heat switches.

316L stainless steel plate is the second kind of austenitic stainless steel with a wide range of application scenarios after 304 stainless steel, and its national standard is 022Cr17Ni12Mo2. It is characterized by the addition of 2-3% molybdenum, with excellent pitting resistance, acid and alkali resistance and high temperature resistance.