Hastelloy C22 functional flanges in the oxidizing as well as reducing environment

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 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.

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

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.

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.

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.

Hastelloy C-276 alloy excellent resistance to a wide variety of chemical process environments such as chlorine, formic and acetic acids, acetic anhydride, and seawater and brine solutions.

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.

Considered one of the most versatile corrosion-resistant alloys available, Hastelloy C276 bushings exhibit excellent resistance in a variety of chemical process environments, including ferric and cupric chlorides, thermally contaminated organic and inorganic media, Chlorine, formic and acetic acid, acetic anhydride, seawater, brine and hypochlorite and chlorine dioxide solutions.

These alloys of flanges are exceptionally resistant to stress corrosion cracking petrochemical applications. Moreover, the molybdenum content results in outstanding strength in solid solution alloy that considers excellent fabrication attributes.

HASTELLOY C276 is a Nickel-chromium-molybdenum wrought alloy that is considered the most versatile corrosion resistant alloy available. Alloy C-276 is frequently used in many industries, including chemical and petrochemical processing, oil and gas, power generation, pharmaceutical, pulp and paper production and waste water treatment. End use applications include stack liners, ducts, dampers, scrubbers, stack gas reheaters, heat exchangers, reaction vessels, evaporators, transfer piping and many other highly corrosive applications.

Alloy X pipe bend is known for its excellent high temperature strength withstanding up to 2200¡ãF. The alloy can also be easily fabricated with forming and welding characteristics by both manual and automatic methods.

Alloy B-2 has poor corrosion resistance to oxidizing environments, therefore, it is not recommended for use in oxidizing media or in the presence of iron or copper salts, which may cause rapid premature corrosion failure.

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 B-3 is a nickel-molybdenum alloy with excellent resistance to pitting, corrosion, and stress-corrosion cracking plus, thermal stability superior to that of alloy B-2. In addition, this nickel steel alloy has great resistance to knife-line and heat¨Caffected zone attack.

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.

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.

Alloy C-276 prevents the formation of grain boundary precipitates in the weld heat affected zone, making it useful in most welding conditions for chemical processes.

The alloy is forged between 2250/1750oF (1230/955oC) and then soaked at the forging temperature for 30 minutes per inch of billet or ingot section thickness. Forging should begin immediately, the billet is removed from the reheat furnace, a 25/40% reduction helps retain as much internal heat as possible. For optimum corrosion resistance, forged parts should be subsequently annealed. See Heat Treatment.

Hastelloy B3 Flanges are also being offered in customized sizes, and shapes to our valuable clients.

Hastelloy c22 fasteners are also resistant to wear in high temperature atmospheres and corrosive environments. Some of the environments in which these fasteners exhibit resistance are oxidizing media, reducing media, chloride environments, and sulfur environments. They are resistant to attack by chemicals such as nitric acid, chlorine, sulfur, acetic acid, organic, inorganic, phosphorus, etc.

Hastelloy C22 Slip On Flanges (UNS N06022) is used in Chlorination systems, Nuclear fuel reprocessing, Pickling systems, and more.

Hastelloy B2 is a nickel-molybdenum alloy with significant resistance to reducing environments, such as hydrogen chloride gas and sulfuric, acetic and phosphoric acids.

Alloy C-276 is also defined as Alloy C276, Inconel C 276 or Hastelloy C, which is a superalloy with a perfect combination of molybdenum, nickel and chromium. Tungsten is added, which is designed to provide excellent corrosion resistance even in harsh environments.

The ANSI B16.5 Hastelloy C22 Weld Neck Flanges is an austenitic alloy grade that is considered to be versatile in nature. Chemically, the DIN 2.4602 Slip On Flange consists of elements such as nickel, chromium, molybdenum & tungsten as a primary base in the alloy.

Alloy B2 pipe bend provides resistance to pure sulfuric acid and a number of non-oxidizing acids.

HASTELLOY B-2 ALLOY. A nickel-molybdenum alloy with outstanding resistance to hydrochloric and sulfuric acids in the as-welded.Hastelloy B2 is a nickel-molybdenum alloy with significant resistance to reducing environments.

Hastelloy C276 bolts are used in heavy duty applications due to their excellent mechanical quality. This material is one of the most corrosion-resistant materials used in the world. The bolt can be used with welding without the effects of grain boundary precipitation because it has virtually no carbide precipitation during welding. Hastelloy C276 bolts can be used in acid treatment applications because the material resists most corrosive conditions, including heavy sulfur compounds and chloride ions. This quality makes it suitable for desulfurization machinery, flue gas machinery and other harsh conditions.

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 G-30 is an improved version of nickel-chromium-iron-molybdenum-copper alloy G-3. With higher chromium, added cobalt and tungsten, the G-30 shows superior corrosion resistance over most other nickel and iron based alloys in commercial phosphoric acids as well as complex environments containing highly oxidizing acids. The resistance of the alloy to the formation of grain boundary precipitates in the heat-affected zone makes it suitable for use in most chemical process applications in the as-welded condition.

Rotary draw bending can also utilize mandrels.

According to the flange size, wall thickness and diameters, the pressure classes vary from class 150 through class 2500. There are also different faced flanges such as the ring type joint Alloy B2 RTJ Flange, raised face flange and flat face flange.

Hastelloy C22/C276 pipes and tubes are manufactured by mechanical treatment or electroplating and machining. The inner and outer surfaces of the Hastelloy tubing are electropolished for a uniform appearance.

Incoloy alloy is applied as the prefix name to several highly corrosion resistant high temperature strength metal alloys produced by Special Metals Corporation. Nickel alloys are excellent for heat exchangers in the chemical processing and nuclear industries. They’re used in steam generator tubing in the nuclear power industry, in high-temperature aircraft systems, and in oil and gas extraction programs where corrosion-, pressure- and temperature-resistant tubing is required

A butt weld pipe fitting is designed to be welded on site at its end(s) to connect pipe(s) together and allow change in direction or pipe diameter, or branching or ending.

This fitting then becomes part of a system for transporting fluids (oil, gas, steam, chemicals, …) in a safe and efficient manner, over short or long distances.

Hastelloy C-276 is easy to form, ductile, it is easy to weld, and possesses exceptional resistance to stress corrosion cracking in chloride-bearing solutions.