Hastelloy B jẹ ojutu ti o lagbara ti o lagbara, alloy nickel-molybdenum, pẹlu resistance pataki si idinku awọn agbegbe bii gaasi kiloraidi hydrogen, ati sulfuric, acetic ati awọn acids phosphoric.Molybdenum jẹ eroja alloying akọkọ eyiti o pese idiwọ ipata pataki si idinku awọn agbegbe.Eleyi nickel irin alloy le ṣee lo ni bi-welded majemu nitori ti o koju awọn Ibiyi ti ọkà-aala carbide precipitates ni weld ooru-fowo agbegbe.
Nickel alloy yii n pese resistance to dara julọ si hydrochloric acid ni gbogbo awọn ifọkansi ati awọn iwọn otutu.Ni awọn afikun, Hastelloy B2 ni o ni o tayọ resistance to pitting, wahala ipata wo inu ati si ọbẹ-ila ati ooru-ipa agbegbe kolu.Alloy B n pese resistance si imi-ọjọ imi-ọjọ mimọ ati nọmba awọn acids ti kii ṣe oxidizing.