Chromium-nickel stainless steel with molybdenum added to increase corrosion resistance and mechanical properties at elevated temperatures. Non-magnetic in the annealed condition and not hardenable by heat treatment. The 316L grade (low carbon) precludes any harmful precipitation in the 800° F - 1500° F range that might result from welding heavier sections.
ASTM A276, ASTM A479, AMS 5648, QQ-S-763
Excellent. Annealing after welding recommended for maximum corrosion resistance.
Type 316 is more resistant to atmospheric and general corrosive conditions than any of the other standard stainless steels. They have good resistance to the corrosive effects of sulfates, phosphates, and other salts as well as reducing acids such as sulfuric, sulfurous, and phosphoric. These grades are less susceptible to pitting on applications where acetic acid vapors or solutions of chlorides, bromides, or iodides are encountered. If heated to the range of 800° - 1500° F or cooled slowly through this range, the low-carbon version (316L) should be selected to avoid intergranular corrosion.