Hastelloy B2 ke tharollo e tiileng e matlafalitsoeng, nickel-molybdenum alloy, e nang le khanyetso e kholo ea ho fokotsa libaka tse kang khase ea hydrogen chloride, le sulfuric, acetic le phosphoric acid. Molybdenum ke karolo ea mantlha ea alloying e fanang ka khanyetso e kholo ea kutu ho fokotsa tikoloho. Alloy ena ea tšepe ea nickel e ka sebelisoa maemong a joalo-joalo hobane e hanana le ho thehoa ha lijo-thollo tsa carbide sebakeng se anngoeng ke mocheso oa weld.
Alloy ena ea nickel e fana ka khanyetso e ntle ho hydrochloric acid maemong ohle le mocheso. Ho ekelletsa moo, Hastelloy B2 e na le khanyetso e ntle ea ho koaleha, ho phatloha ha kutu ea khatello ea maikutlo le tlhaselo ea thipa le libaka tse anngoeng ke mocheso. Alloy B2 e fana ka khanyetso ho asiti e hloekileng ea sulfuric le palo ea li-non-oxidizing acid.