Renowned for its heightened resistance to pitting and corrosion in non-oxidising acids, stainless steel grade 316 stands as a prime choice for marine-grade applications. 316 grade stainless has capability to withstand submersion in saltwater and endure harsh outdoor conditions, making it the right choice for a marine grade stainless steel. This is due to the inclusion of molybdenum, a vital compound that imparts greater resistance to corrosion to 316 stainless steel. It is important to note that localized corrosion can occur even with the use of 316 stainless steel. For this reason, it is a good idea to wash off salt water with fresh water on occasion and not allow salt water to pool for long periods of time in materials made with 316 stainless steel.

For more information on the differences between 304 and 316 stainless steel, see our explainer on this subject.