Selecting the right grade is not easy as there are numerous stainless steel grades to choose from. Stainless steel contains 10–30% chromium as its alloying element, which is what helps it resist corrosion. The nickel addition in austenitic grades provides the highest toughness and ductility among stainless grades. Grades high in chromium, molybdenum, and nickel are the most resistant to corrosion.
For instance, if you are looking for a more affordable grade, you can go for Ferritic and Martensitic stainless steel tube. To avoid or prevent stress corrosion cracking that comes with Austenitic stainless steel, you can opt for Duplex stainless steel. Check out this infographic to know some more things to consider when choosing a stainless steel tube of right grade.