HASTELLOY® alloy B-2 (UNS N10665) Ni 68, Mo 28, Fe 2, Co 1, Cr 1 Significant resistance to reducing environments. This alloy also provides resistance to pure sulfuric acid and a number of non-oxidizing acids. Industry users like the resistance to a wide range of organic acids and the resistance to chloride-induced SCC.
One of its advantages is the heat affected weld zones have reduced precipitation of carbides and other phases to ensure uniform corrosion resistance. Chemical processing industry involving sulfuric, phosphoric, hydrochloric and acetic acid. Temperature uses vary from ambient to 1500°F depending on the environments.