Metallizing How to Control Corrosion by Improving Design. Why is Stainless Steel Corrosion Resistant? An Introduction to Hydrogen Embrittlement. An Intro to Pipeline Corrosion in Seawater. Follow Connect with us. Sign up. C alloy is particularly resistant to pitting and crevice corrosion; it has been used extensively to protect against the most corrosive FGD systems and the most sophisticated pharmaceutical reaction vessels.
G alloy has been very successful as phosphoric acid heat exchanger tubing and for other process components in the fertilizer industry. G alloy was designed as an improved version of G alloy in these applications of Hastelloy. The high chromium content of both of these alloys make them the premier choices for strong oxidizing solutions and mixed acid pickling services. Hastelloy is very well suited to many industrial processes.
Consult with TITAN if you have need for unique Hastelloy applications and fabrication of any type of process equipment. We can also let you know quickly if another metal might better suit your application. Contact us by phone at or toll-free or email info titanmf. Hastelloy Family of Corrosion-Resistant Alloys Hastelloy B-3 alloy Same excellent resistance to hydrochloric acid and other strongly reducing chemicals as B-2 alloy, but with significantly better thermal stability, fabricability and stress corrosion cracking resistance.
Its resistance to these key chemicals is much greater than that of the popular Ni-Cr-Mo C-type alloys, yet it shares with them the outstanding resistance to pitting and crevice attack in chloride salt solutions, and even withstands high levels of oxidizing impurities that the Ni-Mo alloys cannot cope with. Other than the great resistance that the Hastelloy offers to all manners of cracking or pitting, parts made from this metal blend have a tendency to have optimal performance for several chemical applications, which might oxidize the metals.
Other elements like chromium or molybdenum add to the profile of this alloy, which proves to be one of the toughest around. Hastelloy comes in different forms ranging from open dies to shafts, plates, sheets and contour rings.
Regardless of the shape of Hastelloy, it offers the benefits like high-temperature force in the environment and vacuum, which are chemically static. The low carbon content minimizes carbide precipitation during welding to maintain corrosion resistance in as-welded structures. This nickel alloy is resistant to the formation of grain boundary precipitates in the weld heat-affected zone, thus making it suitable for most chemical process application in an as welded condition.
Although there are several variations of the Hastelloy nickel alloy, Hastelloy C is by far the most widely used.
Alloy C is widely used in the most severe environments such as chemical processing, pollution control, pulp and paper production, industrial and municipal waste treatment, and recovery of sour natural gas. Considered one of the most versatile corrosion resistant alloys available, Hastelloy C exhibits excellent resistance in a wide variety of chemical process environments including those with ferric and cupric chlorides, hot contaminated organic and inorganic media, chlorine, formic and acetic acids, acetic anhydride, seawater, brine and hypochlorite and chlorine dioxide solutions.
In addition, alloy C resists formation of grain boundary precipitates in the weld heat affected zone making it useful for most chemical processes in the as-welded condition. This alloy has excellent resistance to pitting and stress corrosion cracking. Hastelloy C alloy can be forged, hot-upset and impact extruded.
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