Hastelloy® and Incoloy® are both members of the “superalloy” family, also known as high-performance alloys. As such, they have several key characteristics in common. They both possess excellent mechanical strength, especially at high temperatures, and they are both highly resistant to corrosion and oxidation. However, there are also several important differences to note between these two superalloys, including their chemical composition, their weldability, and their suitability for different applications.
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Although Inconel® and Incoloy® belong to the same family of superalloys, each possesses its own distinct properties, as well as sharing others. Also known as high-performance alloys, the superalloys in general provide high resistance to corrosion and oxidation, as well as mechanical strength at elevated temperatures.
Maintenance, repair, and operations (MRO) teams can especially attest that MRO processes are being increasingly upgraded and updated with new, specialized materials. As new construction methods take hold, new challenges are being introduced to mechanical, plumbing, or electrical device maintenance and replacement.
The rapid pace of advancement in technology has introduced new approaches to traditional applications. As new systems are developed, and existing systems are upgraded, a variety of nickel based alloys are being used to bring about enhanced performance. For the MRO faced with working with these materials, it is important to first have a good understanding their characteristics and composition.