1-2 S31803 S32205 DUPLEX female npt threaded raised flange

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.

Though it is important to keep in mind that pitting corrosion can be a concern in chloride solutions when oxidizing media is present. In these conditions, the passive (protective) layer of the Duplex 2205 material may be compromised in localized pitting may occur.

Duplex 2205 flanges are made from austenitic-ferritic stainless steel and are designed to provide higher strength and corrosion resistance than 300 series stainless steel. It helps users avoid stress corrosion cracking common to 316 and 317. Duplex 2205 flanges combine the stress corrosion cracking resistance and high strength of ferritic alloys with austenitic fabrication capabilities.

The chemical composition of Duplex F51 flanges contains carbon, chromium, manganese, molybdenum, nitrogen, nickel and phosphorus. Flanges are used in pressure systems and valve fittings.

Duplex flanges are made of a special stainless steel with austenitic and ferritic metallurgical features in its microstructure. These are magnetic steels with high corrosion resistance and work hardening.

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.

This grade, with a tighter specification, is captioned as F60, equating to UNS S32205. Consequently, S32205 can be dual-certified as S31803 but not vice-versa.

Duplex steel butt welding flange forgings are difficult to form due to their high strength and work hardening rate. However, due to the presence of a large amount of stainless steel, the flange is highly resistant to seawater-related corrosion.

It has the nominal composition of 22Cr-5Ni-3Mo-N with P number 10H.

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.

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 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.

Super Duplex Steel Butt Weld Flange for applications requiring excellent strength and corrosion resistance. It offers excellent corrosion resistance due to a balanced chemical composition. In addition, it performs well in environments containing chemicals such as chlorides, halides, sulfides, sulfuric acid, nitric acid, phosphoric acid, etc.

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 pressure ratings of the material are designated by classes 150Lbs through 2500LBs. There are different types of the duplex f51 flanges such as the raised face, ring type joint and flat face flanges.

Application fields of duplex stainless steel:
¡¤ Pressure vessels, high-pressure storage tanks, high-pressure pipelines, heat exchangers (chemical processing industry).
¡¤ Oil and gas pipelines, heat exchanger fittings.
¡¤ Sewage treatment system.

We are one of the largest producers of duplex steel sliding flanges with good fatigue strength and high corrosion resistance. 2205 Duplex Steel Blind Flange is also known for its various mechanical properties, such as excellent resistance to cracking, pitting, and corrosion in harsh environments.

Duplex stainless is a mixed microstructure of austenitic and ferrite (50/50) which has improved strength over ferritic and austenitic steel grades with similar corrosion resistance qualities.

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).

At this temperature, duplex steel flanges over 300 degrees Celsius are still protected from embrittlement due to corrosion. Duct capability is also excellent at low temperatures. Fabrication is done only with tools assigned to stainless steel materials. Must be properly cleaned before use. This is done to protect the stainless steel from cross-contamination of the corroding metal.

S32205 is a dual-phase steel with nearly equal proportions of austenite and ferrite in its chemical composition. This combination makes the alloy stronger than standard austenitic steels. The Duplex Steel S31803 Ring Fitting Flange is a low carbon version and is immune to sensitization.

This category of material includes grades 2205, F51, F53, and F60. Duplex stainless has increased in popularity over the years due to its excellent chemical and mechanical properties versus their basic stainless counterparts, given especially that the cost differences are minimal now as the availability has increased.

UNS31803 has been supplemented by S32205 (F60) which dual conforms to S31803 but has a higher minimum N, MO, NI and Cr which guarantees a better corrosion resistance.

F51 duplex stainless steel is especially suitable for use in the temperature range of -50¡ãF/+600¡ãF, and can also be used for lower temperatures under strictly limited conditions (especially for welded structures).

We offer a complete range of flanges, including slip flanges, socket weld flanges, blind flanges, lap flanges, threaded flanges, butt weld flanges, reducer flanges, and more. Due to a wide range of customer requirements, we offer these super duplex steel UNS S32750 flanges in a variety of sizes.

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.

The ASTM A182 F51 flanges refer to standard or non-standard flanges manufactured in accordance with ASTM A182 Grade F51, which is designated with UNS number S31803.

Super duplex steel flanges are very good for servicing a severe corrosive atmosphere like offshore and marine applications.

Chromium, molybdenum, nitrogen and nickel are the most important alloying elements, which have a significant effect on the mechanical, physical and corrosion properties of duplex stainless steels. Chromium is necessary to form a stable chromium passivation film sufficient to protect steel from mild atmospheric corrosion. The higher the chromium content, the better the corrosion resistance.

Compared with austenitic stainless steel, F51 duplex stainless steel has twice the compressive strength, and compared with 316L and 317L, the designer can reduce its weight.

Duplex 2205 is characterized by high resistance to chloride stress corrosion cracking, chloride pitting and crevice corrosion resistance, good general corrosion resistance, good sulfide stress corrosion resistance, high strength and good weldability and workability.