Ferdi Fittings, located in Istanbul, Turkey, has made a name for itself as a top-notch manufacturer and supplier of Duplex Steel UNS S31803 Forged Fittings. With a strong focus on precision engineering and durability, this company serves industries that need reliable piping solutions capable of resisting corrosion and handling high pressure. By blending advanced forging techniques with strict quality control, Ferdi Fittings produces fittings that adhere to international standards. Their UNS S31803 forged fittings are crafted for seamless integration into various piping systems, ensuring reliability and a long service life, which makes Ferdi Fittings a go-to partner for industrial and commercial applications around the globe.
| Size | : | 1/2″NB TO 4″NB IN |
| Standard | : | ASTM A182 / ASME SA182 |
| Dimensions | : | ANSI/ASME B16.11 & BS3799, etc. |
| Grade | : | UNS S31803, S32205, S2205, S32550, S32750, S32760. |
| Class | : | 2000LBS, 3000LBS, 6000LBS, 9000LBS, etc. |
Duplex Steel UNS S31803 Forged Fittings are primarily made of iron, featuring 22–23% chromium, 4–5% nickel, 3% molybdenum, and small amounts of nitrogen, all of which boost corrosion resistance and strength. The unique duplex microstructure, combining austenite and ferrite phases, offers impressive tensile strength, excellent toughness, and outstanding resistance to stress corrosion cracking. Typically, these fittings have a yield strength of about 450–550 MPa and a tensile strength ranging from 650–850 MPa, along with good elongation properties. Additionally, UNS S31803 fittings show remarkable resistance to pitting and crevice corrosion, making them perfect for tough industrial settings.
| UNS S31803 | Ni | Cr | Mo | Mn | Si | C | N | S | P | Fe |
| min | 4.5 | 22.0 | 3.0 | – | – | – | 0.14 | – | – | – |
| max | 6.5 | 23.0 | 3.5 | 2.0 | 1.0 | 0.03 | 0.2 | 0.02 | 0.03 | Balance |
| Grade | S31803 |
| Density (g/cm 3) | 7.805 |
| Density (lb/in 3) | 0.285 |
| Melting Point (°C) | 1420 – 1465 |
| Melting Point (°F) | 2588 – 2669; |
Ferdi Fittings is a leading supplier of Duplex Steel UNS S31803 Forged Fittings in Istanbul, Turkey. We offer an extensive range of Duplex Steel UNS S31803 Forged 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.
Choose Duplex Steel UNS S31803 Forged Fittings from Ferdi 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 Forged Fittings offer numerous advantages, including exceptional corrosion resistance, especially in chloride-rich environments, making them ideal for industries such as oil and gas, chemical processing, and marine. Their unique duplex structure provides high strength, excellent resistance to stress corrosion cracking, and superior fatigue resistance. These fittings also exhibit excellent weldability, ensuring easy installation and maintenance. With impressive toughness and the ability to withstand high-pressure and high-temperature conditions, Duplex Steel UNS S31803 Forged Fittings deliver long-lasting durability and reliable performance in critical applications.
Yes, custom sizes for Duplex Steel UNS S31803 Forged Fittings are available at Ferdi Fittings. We offer tailored solutions to meet your specific requirements, ensuring optimal performance for your projects. For more information, please contact us at sales@ferdifittings.com.
| STANDARD | UNS | |
| Duplex Steel Forged Fittings | S31803 / S32205 |
| DN-NPT | MAJOR DIAMETER MM | TAPPING /DRILL SIZE MM | TPI | PITCH MM |
|---|---|---|---|---|
| 1/16″ | 7.895 | 6.00 | 27 | 0.941 |
| 1/8″ | 10.242 | 8.25 | 27 | 0.941 |
| 1/4″ | 13.616 | 10.70 | 18 | 1.411 |
| 3/8″ | 17.055 | 14.10 | 18 | 1.411 |
| 1/2″ | 21.223 | 17.40 | 14 | 1.814 |
| 3/4″ | 26.568 | 22.60 | 14 | 1.814 |
| 1″ | 33.228 | 28.50 | 11.5 | 2.209 |
| 1¼” | 41.985 | 37.00 | 11.5 | 2.209 |
| 1½” | 48.054 | 43.50 | 11.5 | 2.209 |
| 2″ | 60.092 | 55.00 | 11.5 | 2.209 |
| 2½” | 72.699 | 65.50 | 8 | 3.175 |
| 3″ | 88.608 | 81.50 | 8 | 3.175 |
| 3½” | 101.316 | 94.30 | 8 | 3.175 |
| 4″ | 113.973 | 107.00 | 8 | 3.175 |
| 5″ | 141.300 | 134.384 | 8 | 3.175 |
| 6″ | 168.275 | 161.191 | 8 | 3.175 |
| 8″ | 219.075 | 211.673 | 8 | 3.175 |
| 10″ | 273.050 | 265.311 | 8 | 3.175 |
| 12″ | 323.850 | 315.793 | 8 | 3.175 |
| Description | Class Designation | ||
|---|---|---|---|
| 3000 | 6000 | 9000 | |
| Elbows 45 and 90 degrees, Tees, Crosses, Couplings, Half-Couplings, End or Pipe Caps | 1/2 – 4 | 1/2 – 2 | 1/2 – 2 |
| 1/2 – 4 | 1/2 – 2 | 1/2 – 2 | |
| 1/2 – 4 | 1/2 – 2 | 1/2 – 2 | |
| Pipe Size by Wall Thickness | SCH 80 / XS | SCH 160 | XXS |
You’ll find Duplex Steel UNS S31803 Forged Fittings in various industries, including oil and gas, petrochemical, chemical processing, and power generation. They’re particularly well-suited for applications involving seawater, acids, and other corrosive environments thanks to their exceptional corrosion resistance. Common applications include elbows, tees, reducers, and couplings in high-pressure piping systems. They’re also used in desalination plants, offshore platforms, and wastewater treatment facilities, where durability and reliability are essential. These fittings play a crucial role in ensuring the safety and efficiency of piping networks, delivering long-term performance even in challenging 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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