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Water Heater Steel

RJMCTAFO Member Posts: 113
The Utica H20 series water heaters have become very popular at the wholesalers around me lately. I have looked at them but also at IBC Interstor. The Interstor is made from 444 grade stainless instead of 316. The stuff I can find says that 444 is better at resisting chloride related issues. Am I understanding that correctly. It sounds like the 444 may make a better tank? Any opinions or experience with this tank?

ATI 444™ alloy is a low carbon and low nitrogen ferritic stainless steel containing 18% chromium, 2% molybdenum.The alloy is stabilized with additions of columbium and titanium for resistance to intergranular corrosion. One bigadvantage of the ATI 444 alloy over austenitic stainless steels, such as 304 and 316 alloys, is the practical immunity of the ATI 444 alloy to chloride stress corrosion cracking (SCC).