Alloy steel carbon steel duplex steel forged flange ring

UNS S32205 Duplex Steel ASME SA182 Butt Weld Flanges are suitable for seawater and power generation equipment because their smooth surfaces can withstand temperatures up to 600¡ãF, while also having excellent flow characteristics.

Duplex steel flanges are widely used in the used engineering, machinery and automotive industries. Duplex Steel S31803 Lap Flanges are ideal for applications requiring better corrosion resistance than Type 316 and good high temperature strength. We have Duplex Steel S31803 / S32205 Flanges in stock. Duplex steel flanges are commonly used in chemical, petrochemical, and power industries.

Duplex steel flanges are designed to improve resistance to pitting corrosion, high strength, stress corrosion, crevice corrosion and cracking. Duplex steel sliding flanges resist sulfide stress corrosion and chloride environments. Duplex steel flat flanges are an important part of the duplex steel flange family.

Duplex steel flanges are hardened alloys that are also very corrosion resistant. The microstructure of this steel consists of a mixture of ferrite and austenite phases. Therefore, they have the characteristics of both ferritic and austenitic stainless steels.

ASTM A182 UNS S31803 Double Flanges are very durable and will fit any size due to different shapes and sizes. They are made of the highest quality raw materials and are also packed in wooden cases so no damage will be found. They should generally not be welded without filler metal as this can lead to excess ferrite.

Butt weld flanges are the most popular type of high pressure pipeline flange. The tapered hub design of butt weld flanges provides an extremely strong connection, and butt weld flanges can be manipulated and bent repeatedly without compromising material and/or connection quality . Butt weld flanges also have the advantage of being highly resistant to extreme high and low temperatures.

ASTM A182 F53 flanges refer to flanges made from super duplex stainless steel 2507 (UNS S32750) by a hot forging process.

The range of Duplex Steel 2205 Orifice Plate Flanges covers all standard materials, sizes, grades and specifications. These duplex steel SAF 2205 flanges are widely used in various application industries such as oil and gas industry, chemical industry, engineering, etc. Ferrous and Nonferrous Metals is committed to providing our customers with consistent and reliable service that meets their needs and promotes continuous improvement of superior systems and quality.

Duplex steel flanges are light in weight and perfect in size and other parameters. These are used in the manufacturing industry. In this case, stainless steel is used, so the corrosion resistance of this product is very good. Duplex blind flanges have the characteristics of high strength and are widely used in petrochemical, electric power and other industries. This needs to be used at some specific temperature as it can become brittle at high temperatures.

Duplex 2205, UNS S32205, is a stainless steel material that derives its “duplex” name from a mixed microstructure containing roughly equal portions of ferrite and austenite. This grade is the most popular variety, and this two-phase material is a significant upgrade over 316 stainless steel in terms of yield strength and corrosion resistance.

The structure of 2205 duplex stainless steel consists of a pool of austenite surrounded by a continuous ferrite phase. In the annealed condition, 2205 contains approximately 40-50% ferrite. 2205 is often referred to as the workhorse grade and is the most widely used grade in the duplex stainless steel family.

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.

ASTM A182 UNS S32750 Flanges is the most common super duplex grade that has an enhanced pitting and crevice corrosion resistance compared with the ordinary austenitic or duplex types.

Some dual-phase steel S31803 butt weld flanges have good oxidation resistance at high temperatures, but tend to become brittle at temperatures above 300 degrees Celsius, and only 2 hours exposure to 475 degrees Celsius. These dual phase steel S32205 ring joint flanges also feature high corrosion and erosion fatigue performance as well as lower thermal expansion and higher thermal conductivity than certified.

These flanges can be hardened by heat treatment. The application industries of duplex steel flanges are; they are used in offshore oil drilling companies, aircraft exhaust manifolds, petrochemicals, power generation, gas processing, pharmaceuticals, specialty chemicals, burner pipes and spiral welded pipes for fuels, pharmaceutical equipment, Heat exchangers, and seawater equipment. Duplex steel flanges are available in a variety of designs such as sleeve, butt weld, blind, threaded, lap joint and socket weld.

ASME B16.5 Duplex Steel Forged Flanges are available in sizes from 1/8″ to 24″. Depending on the size, flanges are available in different pressure classes. Class 150 Duplex Pipe Flanges are the lowest pressure class up to 2500.

2205 is the most widely used duplex stainless steel, accounting for more than 80% of the duplex stainless steel market. Alloy 2205 offers better corrosion resistance in a variety of environments where 316L is typically used, with the added benefit of higher yield strength.

Austenitic-ferritic stainless steel variants have higher resistance to stress corrosion cracking, but lower toughness and impact strength than ordinary austenitic 304 and 316 stainless steels. Such materials include grades 2205, F51, F53 and F60. Duplex stainless steels have grown in popularity over the years due to their excellent chemical and mechanical properties, and compared to basic stainless steels, especially given the increased availability, the cost difference is now small.

The combination of chromium, molybdenum and nitrogen gives 2205 good resistance to chloride pitting and crevice corrosion. This resistance is extremely important for services such as marine environments, brackish water, bleaching operations, closed loop water systems and some food processing applications. The high chromium, molybdenum and nitrogen content of 2205 provides better corrosion resistance than common stainless steels such as 316L and 317L in most environments, and Citizen Metals has been actively involved in ensuring the best possible quality for our customers.

The high temperature strength of dual phase steel slip flanges is similar to alloy grade 430 in the temperature range of 950 to 1150¡ãC. However, the tensile strength of these flanges increases rapidly below 900¡ãC.

They have a design that allows for the pipes to pass through the flange and locate the correct point for connection. The ASTM A182 grade F53 WNRF Flange has a welded neck raised face.

Due to its high content in this alloyed stainless steel, this grade is also known as 22 Cr duplex steel. Duplex Stainless Steel 2205 Flange SORF is the most widely used category of stainless steel grades. A typical feature of 22 Cr duplex steel plate flanges is high yield strength. In fact, the tensile strength of this special grade is often double or twice that of standard austenitic stainless grades.

Super Duplex UNS S32750 /F53 Flanges are made from a super duplex stainless steel grade that has 24% chromium, 3% molybdenum, 6% nickel and carbon, manganese, silicon, sulfur, phosphorus, nitrogen and iron in the composition.

Compared to austenitic stainless steels, duplex stainless steels have higher tensile and yield strengths and significantly improved resistance to chloride SCC (stress corrosion cracking). They also exhibit higher toughness than ferritic stainless steels.

Sizes range from ?” to 48″. Pressure ratings range from 150 psi to 2500 psi and more. There are also different types of flanges for different applications. ASME SA182 F51 RTJ flanges have two rings as two halves that are joined at the joint by welding.

With an increased chromium content compared with F51 it offers improved pitting corrosion resistance.

The formation of intermetallic phases such as sigma phase in duplex steel flange flanges occurs in the temperature range of 600¡ãC – 1000¡ãC, and the decomposition of ferrite occurs in the temperature range of 350¡ãC – 500¡ãC ( 475¡ãC embrittlement).

The granular structure of the duplex is a ferrite-austenite hybrid material with a higher strength-to-weight ratio than 304 or 316. It balances the weldability of austenite with pure ferrite and maintains good mechanical toughness in applications exposed to cooler ambient temperatures. Offshore/seawater applications are common uses of this type of steel due to its excellent stress corrosion cracking properties. Therefore, duplexes are often found in desalination and pressure vessel plants located in port cities.

Duplex steel Werkstoff No 1.4462 threaded flanges also cannot be used below -50¡ãC as it will cause a ductile to brittle transition. Duplex UNS S32205 Orifice Flange has a tensile strength of 1,16,000 psi 800 MPa. Whereas the duplex SAF 2205 socket weld flange has a yield strength of 80,000 psi 550 MPa. The 2205 Duplex Butt Weld Flange is a low carbon version that is not affected by sensitization and avoids carbide precipitation in welding applications.

Due to the alloy’s excellent resistance to dilute hydrochloric acid, Super Duplex 2507 flanges can be used in the chemical processing industry. Another common problem with steel alloys is that they tend to corrode during welding. When the alloy is welded, the temperature is high, and the excess carbon atoms are precipitated to form carbide precipitates.

Butt weld flanges are flanges designed to be connected to piping systems by butt welding. This type of flange comes in a wide range of sizes, butt weld flanges are expensive due to their long necks and the cost of personnel to contact the WN flange with the pipe or fitting, but are preferred for high stress applications. The neck or hub transfers the stress to the pipe.

The combination of chromium, molybdenum and nitrogen give Duplex 2205 flanges good protection from chloride pitting and crevice corrosion, which makes them useful for marine environments, brackish water, bleaching operations, closed loop water systems and some food processing applications.