Hastelloy B – 2 / Alloy B-2 / 2.4617
High-alloy heat-resistant steel Hastelloy B-2 is a nickel alloy with a high molybdenum content . It has excellent characteristics: in particular, it retains its working properties and is not destroyed in aggressive environments of most acids.
Sulfuric, chloride, phosphoric, formic and other acidic media do not have any external effect on these grades of alloys both at standard and at high temperatures and pressures. Molybdenum as one of the main components guarantees resistance to corrosion cracking.
It is for this reason that Hastelloy (Ukraine) type B-2 is often used in the area of the future seam after welding. It does not form welded carbide crystals, providing a smooth surface.
Steel of this grade perfectly tolerates the effects of concentrated hydrochloric acid under any temperatures. Also, the alloy retains its properties and does not deform in pure sulfuric acid. This makes it possible to use this material as tank cladding in the chemical production of acids.
The alloy is one of the few materials that can provide a smooth seam after welding. This allowed him to find a lot of applications both in architectural structures and in complex nuclear reactors.
Hastelloy B2 chemistry
Hastelloy B2 mechanical properties
Limit yield (0.2% deviation)