Alloy C276 Forged Flange

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.

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.

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 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.

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.

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 C276 is resistant to localized corrosion such as pitting and stress corrosion cracking.

Hastelloy 276 bolts and fasteners are suitable for most chemical applications in the welded condition. However, it should be noted that in environments where C-276 alloy weld joints are subject to attack, C-22 weld filler material should be considered. Hastelloy C276 socket head cap screws also have excellent resistance to pitting corrosion, stress corrosion cracking and oxidizing atmospheres up to 1900¡ãF.

Hastelloy C-276 bushings are also used in sour gas wells, pulp and paper production, waste disposal, pharmaceutical and food processing equipment. Other important properties of this alloy Nickel Alloy C-276 and Hastelloy C-276 include its resistance to oxidizing agents.

C-22 is a great alternative when superaustenitic stainless steels (AL-6XN, 904L, and 254 SMO) and duplex stainless steels (2205 and 2507) will not withstand extremely aggressive media. This is because it is a nickel-chromium-molybdenum-tungsten alloy with better overall resistance to uniform and localized corrosion than any other Ni-Cr-Mo alloy, like Hastelloy C-276, C-4, and alloy 625.

It is used in flue gas desulfurization systems because of its excellent resistance to sulfur compounds and chloride ions encounted in most scrubbers. C 276 alloy has excellent resistance to pitting and to stress corrosion cracking. It is also one of the few materials that withstands the corrosive effects of wet chlorine gas, hypochlorite, and chlorine dioxide.

C22 has excellent resistance to oxidation, carburization, and sulfidation at elevated temperatures. However, C22 should not be used at temperatures above 1250¡ãF due to the possible formation of embrittling phases.

The Ni-Cr-Mo superalloy Hastelloy C276 has excellent resistance in strong acid and alkali media and prevents pitting, crevice corrosion and SCC. Hastelloy C276 also has broad resistance to wet chloride gas, hypochlorite and chlorine dioxide media.

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.

The high nickel and molybdenum contents make the nickel steel alloy especially resistant to pitting and crevice corrosion in reducing environments while chromium conveys resistance to oxidizing media.

INCONEL C-276 alloy has excellent resistance to a wide variety of chemical process environments, including strong oxidizers such as ferric and cupric chlorides, hot contaminated media (organic and inorganic), chlorine, formic and acetic acids, acetic anhydride, and seawater and brine solutions.

They have good creep and oxidation resistance. Strengthening of super alloys is performed by solid-solution hardening, work hardening, and precipitation hardening methods.

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 B3 Lap Joint Flanges has a special chemistry designed to achieve a level of thermal stability greatly superior to that of its predecessors, e.g. B2 alloy.

B3 Hastelloy Flanges has some excellent features to offer like fine finish, accurate range, and durable.

Hastelloy B2 is a nickel base wrought alloy with excellent resistance to hydrochloric acid at all concentrations and temperatures.

C276 Elbow has excellent corrosion resistance to a wide range of concentrated hot acids and reducing environments and can be easily used in hot sulfuric and hydrochloric applications.

Hastelloy C22 threaded flanges have the best weldability.

Corrugated Stainless Steel Tubing is stainless steel tubes with helical groove obtained from a plain tube by cold forming. The quantity of Helix and Angle could be designed to optimize the heat transfer performance.

Machining of Hastelloy UNS N10276 polished plates is best done in the annealed condition. Since this particular alloy grade is prone to work hardening, only low cutting speeds are required.

UNS N10276 Sheets has excellent resistance to pitting corrosion, pressure corrosion cracking and a far higher resistance to crevice corrosion than steels of alloy.

Prefabricated steel s take advantage of offsite prefabrication to improve the speed or erection and cost predictability of the solution.

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.

ASTM B619 welded pipe for the pharmaceutical industry has good corrosion resistance, especially to high purity water. And they also show good resistance to corrosion by buffer solutions used to prepare pharmaceuticals if ASTM B619 UNS N10276 is also exposed to cleaning supplies.

The use of modular construction is directly influenced by the client¡¯s requirements for speed of construction, quality, added benefits of economy of scale, as well as single-point procurement.

Cold bending methods often rely on sheer physical force to help bring the pipe to its final shape while hot bending methods use careful heating to reduce the force required.

Super alloys are also known as high performance alloys. They contain many elements in a variety of combinations designed to provide unique material properties for specific applications.

Hastelloy C276 grade round bars can be used in FGD systems due to their excellent resistance to sulfur-containing compounds and chloride ions encountered in most scrubbers. Alloy C276 Hastelloy bar also has excellent resistance to localized corrosion such as pitting, and the alloy is resistant to stress-related corrosion cracking. Hastelloy C276 N10276 Bright Bar is also one of the few materials that can withstand the corrosive effects of chlorine in the form of wet chlorine gas, hypochlorite and chlorine dioxide.

Alloy C276 bar welding products are used as a matching composition filler material for welding C276 alloy forged and cast products in dissimilar welding applications including other NiCrMo alloys and stainless steels, as well as for surfacing or cladding of steel. Parts thermoformed in HASTELLOY C-276 alloy bar should, if possible, be solution heat treated prior to final fabrication or installation.