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Overview of Hastelloy C276 Pipe Fittings and their Benefits

Views: 1     Author: Wang     Publish Time: 2024-10-17      Origin: Site

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Overview of Hastelloy C276

Hastelloy C276 alloy (UNS N10276) was the first wrought, nickel-chromium-molybdenum material to alleviate concerns over welding (by virtue of extremely low carbon and silicon contents). As such, it was widely accepted in the chemical process and associated industries, and now has a more than 50-year-old track record of proven performance in a vast number of corrosive chemicals. Like other nickel alloys, Hastelloy C276 is ductile, easy to form and weld, and possesses exceptional resistance to stress corrosion cracking in chloride-bearing solutions (a form of degradation to which the austenitic stainless steels are prone). Furthermore, it is very resistant to sulfide stress cracking and stress corrosion cracking in sour, oilfield environments.


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. 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. 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.


While Hastelloy C276 is the most universally resistant substance to corrosion that is currently available, it is not infallible. The metal should not be exposed to high temperature, highly acidic environments. Similarly, it is more easily worked with cold-working practices; hot-working hardens it more easily. If hot working, temperatures should be kept between 1600°F and 2250°F.


Characteristics of Hastelloy C276 Pipe Fitting

Hastelloy C276 Fittings is used in high temperature and high corrosion prone applications. The material is corrosion resistant and heat resistant because of its unique composition. It is a nickel molybdenum chromium super alloy that is stabilized with tungsten. The Hastelloy C276 Fittings come under the ASTM B366 specification. JN Alloy is a leading supplier and manufacturer of these fittings in different types, sizes and threads. There are seamless fittings and buttweld fittings.


Hastelloy C276 is a wrought corrosion-resistant alloy. A major advantage of this alloy is that it mostly does not require solution heat treatment after welding. It resists the formation of grain boundary precipitates that would degrade corrosion resistance. Hastelloy C276 Fittings is well known for Good machinability, although the alloy work hardens as is true of the nickel base alloys in general. Can be cold worked by all conventional methods. Weldable by all common methods except that excessive heat input should be avoided.


Hastelloy C276 Pipe Fittings is one of the most widely used fittings, amongst the other Hastelloy variants. Since these fittings have excellent performance in the most severe environments, the Hastelloy C276 Stub End is regularly a part of industries such as chemical processing, pollution control, industrial and municipal waste treatment, as well as pulp and paper production and recovery of sour natural gas.


JN Alloy supply corrosion resistant Alloy C-276 fittings – schedule 10 to schedule 80 buttweld, 150# threaded, 3000# threaded and socket weld. We offer standard and custom elbows, tees, caps, unions, concentric and eccentric reducers, crosses, laterals, stub ends, return bends, nipples, couplings, hex bushings, plugs and ferrules in an array of sizes and schedules.contact us.


Specification format of Hastelloy C276 Pipe Fittings

Grade

Hastelloy Alloy C276 / UNS N10276

size

Seamless Butt Weld Fittings: 1/2" - 10"
Welded Butt Weld Fittings: 1/2" - 48"

Type

DN15-DN1200

Connection

Welding

Form

90 Elbow, 45 Elbow, Long Radius Elbow, Short Radius Elbow, Concentric Reducer, Eccentric Reducer, Equal Tee, Unequal Tee, Lateral Tee, Cross, Bends 1.5d, 3d, 5d, 10d, U bend, 180 Deg Bend, Short Stub End, Long stub end, End Cap, Dish Cap

Dimensions

ASME/ANSI B16.9, ASME B16.28, MSS-SP-43, BS4504, BS4504, BS1560, BS10

Thickness

SCH10, SCH20, SCH30, STD SCH40, SCH60, XS, SCH 80, SCH 100, SCH 120, SCH 140, SCH 160, XXS available with NACE MR 01-75

Bending Radius

R= 2D, 6D, 1D, 5D, 8D, 3D, 10D or Custom MSS Sp-43 Stainless Steel Pipe Fitting

Size Range

½" NB to 24" NB in Sch 10s, 40s, 80s, 160s, XXS. (DN6~DN100) ASTM A403 Stainless Steel Buttweld Fitting

Manufacturing process

Push, Press, Forge, Cast, etc.

Test Certificates

EN 10204/3.1B
Raw Materials Certificate
100% Radiography Test Report
Third Party Inspection Report, etc

Specialized manufacturer of

90º Elbows, 45º Elbows, Tees, Crosses, Reducers, Pipe Cap, Stub End, Pipe Bend


Applications of Hastelloy C276 Pipe Fittings

Chemical Processing Industry

Hastelloy C276 pipe fittings are widely used in chemical processing because they can withstand extreme temperatures, corrosive chemicals, and high pressure. The fittings are commonly used in chemical reactors, distillation columns, and heat exchangers. The alloy’s high corrosion resistance makes it ideal for use in corrosive environments such as acidic and alkaline solutions and in reducing and oxidizing media.


Pulp and Paper Industry

Hastelloy C276 pipe fittings are used in the pulp and paper digester and bleach plant areas. The fitments play a significant role in this industry because they handle corrosive chemicals such as chlorine dioxide, hydrogen peroxide, and sodium hypochlorite. The fittings also withstand high temperatures and pressures, making them the ideal choice for this industry.


Nuclear Power Plants

Hastelloy C276 pipe fittings are also used in nuclear power plants. Due to their excellent corrosion resistance, the fittings are widely used in the cooling water systems, steam generators, and primary water piping of nuclear reactors. Hastelloy C276 pipe fittings are preferred in nuclear power plants because they provide high reliability and durability.


Pollution Control

Hastelloy C276 pipe fittings are used in pollution control systems such as desulfurization and denitrification. They are also used in wastewater treatment plants to handle corrosive wastewater. The fittings are preferred because of their excellent corrosion resistance, which helps reduce pollution and protect the environment.


Oil and Gas Industry

Hastelloy C276 pipe fittings are used in the oil and gas industry because they can withstand harsh conditions such as high temperatures, high pressures, and corrosive media. They are widely used in the production and processing of oil and gas, including offshore operations. Hastelloy C276 fittings are used to extract and refine hydrocarbons and transport crude oil and natural gas.


Conclusion

Hastelloy C276 pipe fittings are reliable and durable and are used in various applications in different industries. Due to their unique properties, such as resistance to corrosion, high temperatures, and high pressures, these pipe fittings remain the preferred choice in many industries. They are particularly useful in industries that involve corrosive chemicals, harsh environmental conditions, and extreme temperatures. Hastelloy C276 pipe fittings help maintain a safe and efficient operation of the equipment and systems in these industries.

JN Alloy is a distributor and product manufacturer of stainless steel, duplex steel, and nickel.
Tel: +86 19339900211
Add: Stainless steel Market 289, Xinwu District , Wuxi, China
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