Hastelloy C276 butt welded elbows resistant to pitting crevice corrosion and stress corrosion cracking

Hastelloy Alloys Directory
The Corrosion Resistant HASTELLOY alloys are widely used by the chemical processing industries. The need for reliable performance leads to their acceptance and growth in the areas of energy, health and environmental, oil and gas, pharmaceutical and flue gas desulfurization industries.

It demonstrates good resistance to neutral and reducing environments. This alloy creates a tenacious oxide, protective film that does not spall off, but it retains superior oxidation resistance at soaring temperatures.

Hastelloy C2000 Tubes are used in a broad range of industries including petrochemical processing, chemical processing equipment manufacturing, oil refineries and power plants.

Hastelloy C2000 is available in a variety of sizes and thicknesses, this type of nickel-chromium-molybdenum alloy is renowned for its superior strength and corrosion resistance.

It is able to withstand a wide range of oxidizing and non-oxidizing chemicals, and exhibits outstanding resistance to pitting and crevice attack in the presence of chlorides and other halides.

This provides greatly enhanced resistance to sulfuric acid. It also has a high chromium content, to maximize its resistance to oxidizing chemicals and process streams contaminated with ferric ions and dissolved oxygen.

Hastelloy B3 fasteners offer the same excellent resistance to hydrochloric acid and other strong reducing chemicals as other B alloys, including B2, but with significantly enhanced thermal stability and easier fabrication. In addition, B3 fasteners are highly resistant to attack from cut lines and heat affected zones. Like B2 alloys, B3 fasteners are not recommended for use in the presence of iron or copper salts that can cause rapid corrosion failure.

It is also one of the few materials that withstands the corrosive effects of wet chlorine gas, hypochlorite, and chlorine dioxide.

Hastelloy C22 flanges are available in different sizes and shapes. One can easily get it at their doorstep as per their specifications.

The flanges also have 8.89 grams per cubic centimeter density and 1370 degrees melting point. The DIN 2.4617 Socket Weld Flanges and other flanges are used in high temperature, high corrosive and high stress applications due to the higher mechanical properties.

Alloy C276 Coils are often used in Pollution control, chemical processing, Waste treatment, Marine engineering, Pulp and paper production, and more.

Hastelloy B2 prevents the formation of grain boundary carbide precipitates in the weld heat affected zone, making it suitable for most chemical process applications in the as-welded condition. The heat affected weld zone reduces the precipitation of carbides and other phases to ensure uniform corrosion resistance.
Alloy B2 also has excellent resistance to pitting and stress corrosion cracking.

Applications in air pollution control include stack liners, ducts, dampers, scrubbers, stack-gas re-heaters, fans and fan housings.

The tungsten element of Hastelloy C276 pipe makes it suitable for this welding, Hastelloy C276 seamless pipe can be easily welded to other objects.

Alloy X pipe bend specimens showed no carburization at all. Of ten materials evaluated in an atmosphere of hydrogen, nitrogen and ammonia at 1100 Deg. F. and 25,00 psi for 64 days, Alloy X had a nitride case less than one-fourth as thick as the closest competitive material without intergranular attack.

Hastelloy Cold Drawn Tubes and Tubes – Offers good machinability, higher strength and constant degrees of freedom compared to hot rolled and cold drawn tubes. These pipes work more efficiently because their microstructure is very constant and also have increased physical properties.

The flange is second most used joining method after selding. Flanges are used when joints need dismantling. It provides flexibility for maintenance. Flange connects the pipe with various equipment and valves. Breakup flanges are added in the pipeline system if regular maintenance in required during plant operation.
A flanged joint is composed of three separate and independent although interrdlated components; the flanges, the gaskets, and the bolting; which are assembled by yet another influence, the fitter. Special controls are required in the selection and application of all there elements to attain a joint, which has acceptable leak tightness.
A flange is a protruded ridge, lip or rim, either external or internal, that serves to increase strength (as the flange of an iron beam such as an I-beam or a T-beam); for easy attachment/transfer of contact force with another object (as the flange on the end of a pipe, steam cylinder, etc., or on the lens mount of a camera); or for stabilizing and guiding the movements of a machine or its parts (as the inside flange of a rail car or tram wheel, which keep the wheels from running off the rails). The term “flange” is also used for a kind of tool used to form flanges.

Hastelloy fasteners such as bolts, screws, nuts and threaded rods are ideal for use in a variety of moderately to severely corrosive acid environments. The most common grade of Hastelloy fasteners is Hastelloy C276 (2.4819), which is one of the most versatile corrosion-resistant nickel alloys, surpassing Inconel or Monel. There are also other special grades of Hastelloy fasteners that can address more niche corrosion problems.

HASTELLOY X is a wrought nickel-based alloy with excellent high temperature strength and oxidation resistance. All product forms are excellent in forming and welding. Although HASTELLOY X is primarily known for its heat and oxidation resistance, it also has good resistance to chloride stress corrosion cracking and good carburization, as well as excellent resistance to reducing or carburizing atmospheres. Alloy X is one of the most widely used nickel-based superalloys for gas turbine engine components.

Nickel alloys provide high resistance to a wide variety of corrosive agents, oxidation and excellent performance at high temperatures.Certain Nickel Alloys are better for high temperature applications, while others do a better job with corrosion resistance.

The flange is second most used joining method after selding. Flanges are used when joints need dismantling. It provides flexibility for maintenance. Flange connects the pipe with various equipment and valves. Breakup flanges are added in the pipeline system if regular maintenance in required during plant operation.
A flanged joint is composed of three separate and independent although interrdlated components; the flanges, the gaskets, and the bolting; which are assembled by yet another influence, the fitter. Special controls are required in the selection and application of all there elements to attain a joint, which has acceptable leak tightness.
A flange is a protruded ridge, lip or rim, either external or internal, that serves to increase strength (as the flange of an iron beam such as an I-beam or a T-beam); for easy attachment/transfer of contact force with another object (as the flange on the end of a pipe, steam cylinder, etc., or on the lens mount of a camera); or for stabilizing and guiding the movements of a machine or its parts (as the inside flange of a rail car or tram wheel, which keep the wheels from running off the rails). The term “flange” is also used for a kind of tool used to form flanges.

Hastelloy X pipe bend is corrosion resistant, heat resistant and oxidation resistant, being able to withstand reducing or neutral atmospheres and oxidation.

2.4819 has very good resistance to pitting, crevice corrosion and stress corrosion cracking, C276 is worth mentioning for its excellent resistance to aggressive media under oxidizing and reducing conditions.

Hastelloy B3 Flanges has great resistance to cutter line, and heat affected zone attack.

Hastelloy B2 studs have poor corrosion resistance to oxidizing environments and are therefore not recommended for use in oxidizing media or in the presence of iron or copper salts as they may cause rapid premature corrosion failure.

This nickel alloy also offers optimum resistance to environments where reducing and oxidizing conditions are encountered in process streams. This is beneficial in multi- purpose plants where such ¡°upset¡± conditions occur frequently.

Brushing these boards with stainless steel wire after the welding operation usually removes the hot color and likewise creates surface areas that do not require additional pickling.

Hastelloy C276 is one of the few materials that can withstand the corrosive effects of wet chlorine, hypochlorite and chlorine dioxide.

Alloy C276 Seamless Nickel Tube is a nickel molybdenum chromium alloy with added tungsten for excellent corrosion resistance in a wide range of harsh environments. The high molybdenum content makes this alloy particularly resistant to pitting and crevice corrosion.

Hastelloy C276 alloy, UNS N10276, 2.4819, is the most widely used and versatile corrosion resistant nickel alloy.

Hastealloy is a term that refers to a group of corrosion resistant metal mixtures that are based on nickel. Hastealloys have a unique combination of properties that provide them with significantly stronger corrosion resistance capabilities compared to traditional alloys. As such, it was widely accepted in the chemical process and associated industries, and now has a 50-year-old track record of proven performance in a vast number of corrosive chemicals.

Hastelloy C276 SB575 4mm Thick Plate is by far the most commonly used alloy in different industries.

Hastelloy C276 Fastener is a wrought corrosion resistant alloy that resists the development of grain boundary precipitates that reduce corrosion resistance. C276 alloy fasteners have good machinability and are used for desulfurization of flue gas equipment and chemical process equipment. Hastelloy C276 bolts are commonly used to hold materials or objects together, or to position objects. A fastener that usually consists of a head on one end and a chamfer on the other. It is typically used in solution treated condition and soaked at 1121¡ãC (2050¡ãF) and then flash quenched.

Hastelloy’s resistance to sulfuric acid makes it a common choice for protection from hydrogen sulfide (H2S), more commonly known as?sour gas.

C276 is a nickel-molybdenum-chromium superalloy with tungsten added, designed for excellent corrosion resistance in a variety of harsh environments. The high nickel and molybdenum contents make nickel steel alloys particularly resistant to pitting and crevice corrosion in reducing environments, while chromium is resistant to oxidizing media.

As with most piping considerations, understanding the ideal uses for bent pipe in your design or project is essential to the proper operation of the finished system.