Braxton Fittings, based in Midland, UK, is a leading manufacturer and supplier of Duplex Steel UNS S31803 Buttweld Fittings. Known for their superior corrosion resistance, high strength, and excellent weldability, UNS S31803 fittings are ideal for applications in demanding industries such as chemical processing, marine, and oil & gas. Our Duplex Steel UNS S31803 Buttweld Fittings are designed to perform reliably in high-pressure and high-temperature environments, ensuring long-lasting durability. At Braxton Fittings, we offer customized solutions to meet the specific requirements of our clients, providing top-quality products for various industrial applications.
| Standards | ASTM, ASME |
| Designation | A815, SA815 |
| Dimension Standard | ASME/ANSI B16.9, ASME B16.28, MSS-SP-43 |
| Grade | Duplex Steel S31803 Buttweld Pipe Fittings. |
| Type | Seamless, Welded |
| Thickness | Sch 5s, Sch 10s, Sch 40s, Sch 80s, Sch 160s, Sch XXS |
| Size | 1/2″ to 24″ |
| Two Joint / Two Halve S31803 Butt weld Fittings Size | 6″ to 48″ |
| Types of Butt weld Fittings | Equal Tee, Nipple, Long Radius Elbow, Reducing Tee, Elbows, Swage Nipple, Short Radius Elbow, Reducer, Barrel Nipple, 90 Deg Elbow, Concentric Reducer, Reducing Nipple, 45 Deg Elbows, Eccentric Reducer, Bend, 180 Deg Elbow, End Cap, 1D Elbow, 3D Elbow, Stubend, 5D Elbow, Cap, Piggable Bend, Long Stubend, Tee, Short Stubend, Long Radius Bend. |
| Also as per National & International Standard &Specification | |
Duplex Steel UNS S31803 Buttweld Fittings are composed of approximately 22-23% chromium, 4.5-6.5% nickel, 3% molybdenum, and small amounts of other elements like nitrogen and manganese. This combination provides enhanced strength, excellent resistance to corrosion, and good weldability. Mechanically, UNS S31803 offers high tensile strength (up to 700 MPa) and yield strength (around 450 MPa), along with impressive toughness and ductility, even in low temperatures. Its unique microstructure, consisting of both austenitic and ferritic phases, ensures superior resistance to stress corrosion cracking and pitting.
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | Fe |
| Duplex Steel S31803 | 0.030 max | 2 max | 1 max | 0.030 max | 0.020 max | 22 – 23 | 3 – 3.50 | 4.50 – 6.50 | 0.14 – 0.20 | Bal |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 7.8 g/cm3 | 1350 °C (2460 °F) | Psi – 116000 , MPa – 800 | Psi – 80000 , MPa – 550 | 15 % |
Braxton Fittings is a leading supplier of Duplex Steel UNS S31803 Buttweld Fittings in Midland, UK. We offer an extensive range of Duplex Steel UNS S31803 Buttweld Fittings, renowned for their excellent corrosion resistance and high strength, which makes them perfect for demanding industrial applications like chemical processing, marine environments, and high-temperature systems. With a commitment to quality and reliable delivery, we ensure our clients receive top-tier products tailored to meet the specific needs of various industries.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
| STANDARD | WERKSTOFF NR. | UNS |
| Duplex Steel S31803 | 1.4462 | S31803 |
Choose Duplex Steel UNS S31803 Buttweld Fittings from Braxton Fittings for superior quality, exceptional corrosion resistance, and reliable performance in extreme conditions. We offer customized solutions backed by expert support and industry experience.
Duplex Steel UNS S31803 Buttweld Fittings offer several advantages, including excellent resistance to corrosion, pitting, and stress corrosion cracking, making them ideal for harsh environments. Their unique dual-phase microstructure provides a high strength-to-weight ratio, offering greater tensile and yield strength than standard austenitic stainless steels. These fittings also exhibit superior weldability, making them easier to work with in fabrication processes. UNS S31803 fittings are highly durable in industries such as chemical processing, oil and gas, and marine applications, ensuring long-lasting performance even in high-pressure, high-temperature environments.
Yes, custom sizes for Duplex Steel UNS S31803 Buttweld Fittings are available at Braxton Fittings. We offer tailored solutions to meet your specific requirements, ensuring optimal performance for your projects. For more information, please contact us at sales@braxtonfittings.co.uk
Duplex Steel UNS S31803 Buttweld Fittings are widely used in industries where corrosion resistance and high strength are critical. These fittings are ideal for chemical processing, oil and gas, and petrochemical industries, where they withstand aggressive environments and high pressures. They are also commonly used in marine and offshore applications due to their resistance to seawater corrosion. Additionally, Duplex Steel UNS S31803 Buttweld Fittings are employed in power plants, desalination plants, and pulp and paper industries, providing reliable performance in high-temperature, high-stress conditions.
Get in touch with one of our Technical Sales Representatives to request a quote or get answers to any questions you may have.
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