Duplex Steel S31803 Flanges

Hindco Steel and Alloys is a reliable name among leading Duplex Steel S31803 Flanges Manufacturers in India. They provide durable, precision-made flanges to clients around the world. These flanges are known for their high strength and excellent resistance to corrosion. As a result, they are in high demand in the petrochemical, marine, oil, and gas industries across Asia, Europe, the Middle East, and the Americas. As respected Duplex Steel S31803 Flanges Suppliers, Hindco Steel and Alloys makes sure every flange is built according to international standards like ASTM A182, ASME SA182, and EN standards, which meet the needs of different industries globally.

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What are Duplex Steel S31803 Flanges?

Duplex Steel S31803 Flanges are made from a balanced mix of austenite and ferrite. This gives them excellent mechanical strength and resistance to stress corrosion cracking. They are commonly known as UNS S31803 or 1.4462 grade in global markets. Hindco Steel and Alloys is a trusted supplier of Duplex Steel S31803 Flanges and provides these flanges to industries in countries such as Germany, UAE, Saudi Arabia, the USA, and South Africa. Their performance in both chloride-rich and acidic environments makes them a reliable choice for critical operations.

One of the main benefits of choosing Duplex Steel S31803 Flanges Stockists like Hindco Steel and Alloys is getting flanges with a high strength-to-weight ratio, good weldability, and a long service life. Unlike standard stainless steel flanges, S31803 flanges have better resistance to pitting, crevice corrosion, and general corrosion, especially in seawater and chemical processing plants. Their great toughness and cost-effectiveness make these flanges a perfect choice for heavy-duty applications in regions like Africa, Asia, and Europe.

There are several types of Duplex Steel S31803 Flanges available at Hindco Steel and Alloys. These include weld neck flanges, slip-on flanges, blind flanges, socket weld flanges, lap joint flanges, and threaded flanges. Each type is designed for specific industrial needs. They ensure leak-proof connections and durability under high pressure and temperature conditions. As a leading manufacturer of Duplex Steel S31803 Flanges, Hindco Steel and Alloys keeps a large inventory ready for immediate dispatch to global markets.

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Duplex Steel S31803 Flanges are widely used in various industries because of their useful properties. In the oil and gas industry, these flanges are important for offshore drilling rigs, subsea pipelines, and refining operations where strength and resistance to corrosion are essential.

In the petrochemical industry, Duplex Steel S31803 Flanges are important for processing units, heat exchangers, and reactors because they can handle high temperatures and harsh chemicals.

In the marine industry, Duplex Steel S31803 Flanges are preferred for seawater cooling systems, shipbuilding, and desalination plants because they resist chloride-induced corrosion very well.

In the power generation industry, Duplex Steel S31803 Flanges are found in turbines, boilers, and high-pressure systems. They provide dependable performance in extreme heat and stress conditions.

In the construction industry, Duplex Steel S31803 Flanges are used in structural frameworks, pressure vessels, and piping systems that need lasting durability.

Internationally, Duplex Steel S31803 Flanges have various names. In Europe, they are commonly called EN 1.4462 flanges. In the United States, they are known as UNS S31803 or ASTM A182 F51 flanges. In Germany, they are sold as WNR 1.4462 flanges. In Asian markets like Japan and China, they may be listed under JIS and GB standards. This worldwide naming system helps customers in different countries find the same high-quality flanges from Hindco Steel and Alloys with confidence.

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Specifications Of Duplex Steel S31803 Flanges

Size 1/8" NB TO 24" NB
Standard ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc.
Designation ANSI B 16.5, BS 1560. BS 10, IS 6392, B-2.1 NPT, API, DIN, JIS. MSS SP 44
Grade ASTM A182 / ASME SA182 F51 / F52 / F53 / F54 / F55 / F57 / F59 / F60 / F61, UNS S31803, UNS S32205.
Class 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS
Flange Face Type Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ)

Chemical Composition Of Duplex Steel S31803 Flanges

Grade C Mn Si P S Cr Mo Ni N Fe
S31803 0.030 max 2.00 max 1.00 max 0.030 max 0.020 max 22.0 – 23.0 3.0 – 3.5 4.50 – 6.50 0.14 – 0.20 63.72 min

Mechanical Properties Of Duplex Steel S31803 Flanges

Grades Density (g/cm 3) Density (lb/in 3) Melting Point (°C) Melting Point (°F)
S31803 7.805 0.285 1420 – 1465 2588 – 2669

Application Of Industries

Power Plants

Construction

Petrochemical

Aerospace

Refineries

Chemical

Oil & Gas

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