Hastelloy C276 Round Head Bolts minimizes carbide precipitation during welding

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 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.

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

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.

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 B3 studs are suitable for all applications that previously required the use of Hastelloy B2 alloy. Due to the enhanced thermal stability of Hastelloy B3 square bolts, the problems associated with manufacturing Hastelloy B2 parts are reduced.

The low carbon content in the 2.4819 alloy C276 tube minimizes carbide precipitation. Carbide precipitation is a phenomenon that occurs during welding of various alloy grades.

Inconel 600 flat washers are also non-magnetic and offer the perfect combination of high strength, hot and cold workability, and resistance to common forms of corrosion. Inconel Alloy 600 ferrules exhibit excellent toughness even at sub-zero temperatures and are suitable for use with most alkaline solutions and sulfides. To avoid stress corrosion cracking, Alloy 600 split washers are manufactured to be fully stress relieved prior to use.

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 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.

Each method has unique benefits and will determine the degree of bending possible and the final shape of the pipe.

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 B-3 is a nickel-molybdenum alloy with excellent resistance to pitting, corrosion and stress corrosion cracking and better thermal stability than alloy B-2. In addition, this nickel-steel alloy is highly resistant to knife-line and heat-affected zone attacks.

Hastelloy C276 is a nickel-molybdenum-chromium superalloy with an addition of tungsten designed to have excellent corrosion resistance in a wide range of severe environments.Alloy C-276 is one of the most universally corrosion resistant alloys available today. It is used in a variety of environments ranging from moderately oxidizing to strong reducing conditions. Alloy C-276 has exceptional resistance to sulfuric acid, hydrochloric acid, formic acid, acetic acid, chlorides, solvents, wet chloride gas, hypochlorite and chlorine solutions.

Hastelloy is a term used to describe nickel metal that has been alloyed to increase corrosion resistance. This is primarily done through the addition of molybdenum and chromium.It is commonly used for pipes and valves in the chemical and petrochemical industries. It is also used in reactor vessels in the chemical and nuclear industries.

Hastelloy C276 is one of the few grades resistant to wet chloride gas and chlorine dioxide.

It is commonly referred to by the tradename Hastelloy C22 and the universal designation UNS N06022. C22 has excellent corrosion and oxidation resistance, great mechanical properties over a wide range of temperatures, and good fabrication properties.

These are available in different types and grades such as Monel 400 Forged Threaded Elbow, Nickel 200 Forged Threaded Equal and Unequal Tee, Inconel 600 Threaded Equal and Unequal Cross, Incolloy 800 Threaded Half and Full Threaded Fittings, UNS S4400 Threaded Reducers, UNS S2201 threaded caps, Hastelloy C276 threaded reducing inserts, etc.

Hastelloy B2 pipe bend has excellent resistance to all temperatures and concentrations of hydrochloric acid.

Each of them have structural differences. These flanges are made up of a nickel, chromium, molybdenum alloy that has 50% nickel 14% chromium, 15% molybdenum and carbon, manganese, silicon, sulfur, cobalt, iron and phosphorus in the composition.

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.

Another difference between Astm B626 Nickel Alloy C276 Welded Pipe and Alloy C is that Alloy C276 pipe has better machinability.

A nickel alloy of this type also has great resistance to hydrochloric acid at different concentrations and temperatures.

Hastelloy C22 has good versatility and resistance to chloride-induced pitting HASTELLOY? C-22? alloy (UNS N06022) is a well-known nickel-chromium-molybdenum material, some of its main properties are resistance to oxidizing and non-oxidizing chemicals, protection from Subject to pitting, crevice corrosion and stress corrosion cracking. C22 has a high chromium content and is more resistant to oxidation than C-276 alloy.

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 is a nickel-based superalloy ideal for gas turbine engine, aircraft, industrial furnace, and chemical processing applications.

Hastelloy C-276 is a very popular alloy for us because of its high corrosion resistance in a wide range of environments. It has excellent resistance to oxidizing aqueous media, including wet chlorine and mixtures of oxidizing acids containing nitric or chloride ions.

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 DIN NR. 2.4819 Pipe is a nickel based superalloy. Apart from its primary base alloying element, the alloy for Hastelloy C276 Pipe also contains elements molybdenum & chromium, which results in the alloy gaining certain properties.

Hastelloy G30 is a nickel-based alloy with a high chromium content that provides superior corrosion resistance to commercial phosphoric acid and many highly oxidizing acid media.

Hastelloy B3 Ring Type Joint Flanges is ideally suited for applications requiring corrosion resistance superior to SS 304 and has good elevated temperature strength.

Hastelloy C22 or Wnr 2.4617 Material is also referred to as alloy C22.

Hastelloy C22 Flanges are a technique used by many industries in the connecting of pipes, valves, pumps and other equipment, into what is referred to as a piping system.

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.