HastelloyB-2 Material introduction

Nickel molybdenum alloy HastelloyB-2（UNS N10665/W.Nr.2.4617) The content of carbon and silicon in the weld is very low, which reduces the precipitation of carbon and other impurities in the welding heat affected zone, so the weld also has sufficient corrosion resistance. HastelloyB-2 has good corrosion resistance in reducing media, such as hydrochloric acid solution at various temperatures and concentrations. It also has good corrosion resistance in medium concentration sulfuric acid solution (or contains a certain amount of chloride ion). It can also be used in acetic acid and phosphoric acid environment. The alloy material can have the best corrosion resistance only in the appropriate metallographic state and pure crystal structure. It is widely used in chemical, petrochemical, energy manufacturing and pollution control fields, especially in sulfuric acid, hydrochloric acid, phosphoric acid, acetic acid and other industries.

HastelloyB-2 chemical composition

HastelloyB-2 Physical and mechanical properties

HastelloyB-2 Part heat treatment process

Bar, round cake and plate：（1040-1090）℃±10℃，Oil cooling, air cooling or water cooling+720℃±5℃，8h，At 50℃/h Furnace cooling to 620℃±5℃，8h，Air cooling。