SS 316 is better than SS 304 in terms of corrosion resistance, heat resistance and certain properties, but the price is higher than AISI 304, for more details, please check stainless steel grade 304 vs 316, and 316 vs 316L. Chemical Composition of SS316/ SS316LElementSS316SS316LSilicon0.750.75Chromium16.00-18.0016.00-18.00Nickel10.00-14.0010.00-14.00Molybdenum2.00-3.002.00-3. They both have 8grams per centimeter cube densities. When cold worked, 316 can produce high yield and tensile strengths similar to Duplex stainless grades. 316L stainless steel (UNS S31603) is the low carbon version of AISI 316. Both materials have carbon, iron, manganese, phosphorus, sulfur and silicon in the composition. 316L grade is the low carbon version of 316 stainless steel. Because of its composition, 316 and 316L stainless steel plate is more tolerant of corrosion than its 304 and 304L stainless steel plate counterpart. SS304 stainless steel has lower corrosion resistance than SS316 and slightly higher than SS302. The addition of molybdenum provides greater corrosion resistance than 304, with respect to localized corrosive attack by chlorides and to general corrosion by reducing acids, such as sulfuric acid. Its primary alloying constituents after iron, are chromium (between 16–18%), nickel (10–12%) and molybdenum (2–3%), with small (<1%) quantities of silicon, phosphorus & sulfur also present. The molybdenum content increases corrosion resistance, improves resistance to pitting in chloride ion solutions, and increases strength at high temperatures. SAE 316L grade stainless steel, sometimes referred to as A4 stainless steel or marine grade stainless steel, is the second most common austenitic stainless steel after 304/A2 stainless steel. Qualities of Type 316 Steel Type 316 steel is an austenitic chromium-nickel stainless steel that contains between two and 3 molybdenum. Low carbon austinitic alloy Crevice corrosion of 316 stainless steel from desalination. The stainless steel (SS) 316L is a chromium-nickel-molybdenum austenitic stainless steel developed to provide improved corrosion resistance to SS 304/304L in.

Ss316 composition