|MICC Sheath types||UNS Ref.||DIN Ref.|
Similar to 304 (17%Cr-9%Ni) with the addition of 3% molybdenum. Suitable for wet, corrosive applications (sea water) as it is more resistant to local and general corrosion than 304 and 321/347.
It’s performance on hot, dry applications is slightly inferior to 304L.
Same as 316 but with a lower concentration of carbon. 316L is immune to sensitisation. It has better weld properties but lower strength at high temperatures than 316
316Ti is resistant to weld decay similarly to 316L but loses stabilising additive (Ti) during welding.
Type 316 and Type 316L find their greatest use in the chemical, textile, paper, pharmaceutical, and photographic industries because of their excellent resistance to chemical corrosion. They also find use where the combination of corrosion resistance and extremely high strength at elevated temperatures is necessary.
Type 316 is known to be more resistant to atmospheric and chemical corrosion than any other grade of the stainless steels. Maximum corrosion resistance may be obtained by fully annealing this alloy. If the application calls for welding, Type 316L should be used as it is highly resistant to carbide precipitation and intergranular corrosion. Which usually occurs at high temperatures.