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Themban Nickel Alloys, a premier manufacturer and distributor based in Cape Town , Cape Town, proudly offers Duplex Steel S31803 tube fittings renowned for their exceptional strength and corrosion resistance. Our S31803 fittings are designed to meet the rigorous demands of various industrial applications, ensuring reliability and durability in challenging environments. With a commitment to quality and precision, we provide top-tier products that enhance performance and longevity. Whether you need fittings for petrochemical, marine, or other critical industries, Themban Nickel Alloys delivers superior solutions tailored to your needs. Trust us for excellence in every fitting.
| ASTM A815 WPS S31803 Pipe Fittings Standard Dimensions | ASME/ ANSI B16.9, ASME B16.28, MSS-SP-43, BS1560, BS4504, BS10 ASME 16.11, MSS SP-79, 83, 95, 97, BS 3799 |
|---|---|
| Specifications | ASTM A815 / ASME SA815 |
| Duplex Steel S31803 Elbow | Angle : 22.5 deg, 30deg, 45 deg, 90 deg, 180 deg, 1.0D, 1.5D, 2.0D, 2.5D, 3D, 4D, 5D, 6D, 7D-40D. Standard: ASME B16.9, ASME B16.28, ASME B16.25, MSS SP-75 DIN2605 JISB2311 JISB2312 JISB2313, BS, GB, ISO |
| A815 WPS S31803 Pipe Fittings Thickness | SCH10, SCH20, SCH30, STD SCH40, SCH60, XS, SCH 80, SCH 100, SCH 120, SCH 140, SCH 160, XXS available with NACE MR 01-75 |
| ASTM A815 WPS 31803 Pipe fittings Thread | NPT, BSPT, BSPP |
| Duplex Steel S31803 Forged Fittings Types | Seamless / Welded / ERW / Fabricated UNS S31803 DSS Pipe Fittings |
| C | N | P | Si | Mn | Mo | Fe | Cr | S | Ni |
|---|---|---|---|---|---|---|---|---|---|
| 1.0 | 0.03 | 0.02 | 2.0 | 3.0 – 3.5 | 22.0 – 23.0 | 0.03 | 4.5 – 6.5 | 0.14 – 0.2 | Bal |
| Density | Melting Point | Yield Strength (0.2%Offset) | Tensile Strength | Elongation |
|---|---|---|---|---|
| 7.8 g/cm3 | 1350 °C (2460 °F) | Psi – 80000 , MPa – 550 | Psi – 116000 , MPa – 800 | 15 % |
The Duplex Steel S31803 Tube Fittings from Themba Nickel Alloys are made up of a mix of iron (the balance), chromium (21%), nickel (5–6.5%), molybdenum (2.5–3%), along with trace amounts of nitrogen, manganese, and silicon. This unique composition gives them remarkable resistance to pitting, crevice corrosion, and stress corrosion cracking, especially in environments with chloride. These fittings boast excellent mechanical properties, featuring a tensile strength of about 620–880 MPa and a yield strength of 450–620 MPa, along with high toughness, ductility, and fatigue resistance. This ensures they perform reliably even under extreme temperatures, pressures, and chemical exposure.
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You’ll find Duplex Steel S31803 Tube Fittings widely used in industries that need strong, corrosion-resistant, and durable connections. They’re ideal for applications like chemical processing equipment, oil and gas pipelines, desalination plants, heat exchangers, marine and offshore structures, and power generation facilities. These fittings ensure secure, leak-proof connections, resist deformation and corrosion, and offer long-lasting durability in aggressive environments. With Themba Nickel Alloys’ Duplex Steel S31803 Tube Fittings, you get safe, reliable, and high-performance solutions, making them a go-to choice for critical industrial applications worldwide.
