Tim Fittings, located in Wellington, New Zealand, stands out as a top manufacturer and supplier of high-quality Duplex Steel S31803 Pipe Fittings. Known for their precision engineering and strict quality standards, Tim Fittings provides products that guarantee reliability, durability, and outstanding performance in tough industrial settings. Their Duplex Steel S31803 fittings are crafted to meet international standards, boasting excellent corrosion resistance and structural integrity. Trusted by various sectors, including oil and gas, chemical, and marine industries, Tim Fittings merges technical know-how with exceptional customer service, making them the go-to choice for clients in search of long-lasting and efficient piping solutions.
Specifications ASTM A815 / ASME SA815
Dimensions ASME/ANSI B16.9, ASME B16.28, MSS-SP-43
Size 1/2″ NB to 24″NB in
Type Seamless / Welded / Fabricated
Bending Radius R=1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom
Thickness Sch 5s, Sch 10s, Sch 40s, Sch 80s, Sch 160s, Sch XXS
Duplex Steel S31803 Pipe Fittings are made up of about 22% chromium, 5–6% nickel, 3% molybdenum, and a touch of nitrogen, resulting in a well-balanced microstructure of austenite and ferrite. This dual-phase design provides high tensile strength, remarkable toughness, and outstanding resistance to stress corrosion cracking and pitting. The fittings have a yield strength of around 450–550 MPa and an ultimate tensile strength of 700–850 MPa, making them perfect for high-pressure applications. Plus, their excellent thermal and chemical stability ensures they perform reliably in aggressive environments, making them a dependable choice for critical piping systems.
| 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 |
| Grade | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| S31803 | 7.8 g/cm3 | 1350 °C (2460 °F) | Psi – 116000 , MPa – 800 | Psi – 80000 , MPa – 550 | 15 % |
Tim Fittings is a leading supplier of Duplex Steel S31803 Pipe Fittings in Wellington, New Zealand. We offer an extensive range of Monel K500 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 | UNS | WERKSTOFF NR. |
| Duplex 2205 | S31803 | 1.4462 |
Duplex Steel S31803 Pipe Fittings from Tim Fittings offer exceptional corrosion resistance, especially in seawater and harsh environments. They are known for their high strength, durability, and resistance to pitting and crevice corrosion, ensuring long-lasting performance. We provide precise manufacturing, quality control, and reliable service for diverse industrial applications.
Duplex Steel S31803 pipe fittings offer exceptional corrosion resistance, particularly against pitting, crevice corrosion, and stress corrosion cracking, making them ideal for harsh environments. They provide high strength and excellent resistance to fatigue, making them durable under pressure. The alloy’s good weldability and formability enhance the ease of fabrication. Duplex Steel S31803 pipe fittings also offer superior toughness and stress resistance, ensuring reliability in demanding applications such as chemical processing, marine, and oil & gas industries. Their cost-effectiveness and long-lasting performance make them a preferred choice for critical piping systems.
| Outer Diameter And Inside Diameter | Equivalent | Diameter Of Pipe Nominal | Typical Threads In Inches |
| 5/16 | 0.313 | 1/16 | 27 |
| 13/32 | 0.405 | 1/8 | 27 |
| 35/64 | 0.540 | 1/4 | 18 |
| 43/64 | 0.675 | 3/8 | 18 |
| 27/32 | 0.840 | 1/2 | 14 |
| 1-3/64 | 1.050 | 3/4 | 14 |
| 1-5/16 | 1.315 | 1 | 11-1/2 |
| 1-21/32 | 1.660 | 1-1/4 | 11-1/2 |
| 1-29/32 | 1.900 | 1-1/2 | 11-1/2 |
| 2-3/8 | 2.375 | 2 | 11-1/2 |
| 2-7/8 | 2.875 | 2-1/2 | 8 |
| 3-1/2 | 3.500 | 3 | 8 |
| 4 | 4.000 | 3-1/2 | 8 |
Yes, custom sizes for Duplex Steel S31803 Pipe Fittings are available at Tim Fittings. We offer tailored solutions to meet your specific requirements, ensuring optimal performance for your projects. For more information, please contact us at sales@timfittings.co.nz.
Duplex Steel S31803 Pipe Fittings are extensively utilized in industries that demand strong corrosion resistance and high mechanical performance. They play a crucial role in oil and gas processing, chemical and petrochemical plants, seawater desalination systems, and pulp and paper manufacturing. Their resistance to chloride-induced stress corrosion makes them particularly suitable for marine and offshore applications, while their high strength allows for reduced wall thickness, saving both material and costs. These fittings are also used in heat exchangers, pressure vessels, and pipelines that transport aggressive fluids, ensuring safety, durability, and efficiency.
Get in touch with one of our Technical Sales Representatives to request a quote or get answers to any questions you may have.
©2024 Tim Fittings. All Rights Reserved.
