Home > Duplex Steel > Duplex Steel S31803 Stud Bolts
Duplex Steel S31803 stud bolts are robust fasteners crafted from duplex stainless steel, which boasts a well-balanced mix of austenite and ferrite. This unique blend gives them impressive mechanical strength, outstanding resistance to corrosion, and remarkable durability, even in tough environments. These stud bolts stand up well against pitting, crevice corrosion, and stress corrosion cracking caused by chlorides, making them ideal for critical roles in industries like chemical processing, petrochemicals, oil and gas, marine, and offshore operations.
| Grade | Duplex Steel UNS S31803 / S31803 |
| Specifications | ASTM A 479 ASME SA 479 |
| Dimension | DIN, ASTM, BS and all International Standards |
| Length | 3mm to 200mm |
| Size | M3 – M56 | 3/6″ to 2″ | Custom Sizes |
| Types | Threaded Rod, Class A double ended stud, Tie Rod, Double Ended Stud, Stud Bolts, Bronze Hex Studs, Threaded Studs etc |
| S31803 | 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 |
| S31803 | 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 % |
At Themban Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Duplex Steel S31803 Stud Bolts in Cape Town , South Africa, providing cutting-edge solutions for all your piping needs. Our state-of-the-art production plants are strategically located in the Cape Town, allowing us to maintain a vast inventory of over 16,000 tons of premium-quality materials readily available in stock. We are dedicated to delivering superior products and services, ensuring reliability and excellence for our global clientele.
Contact us to get a quick quote for your requirement.
You’ll find Duplex Steel S31803 stud bolts commonly used in pipelines, pressure vessels, heat exchangers, desalination plants, and offshore platforms. Their blend of high strength, corrosion resistance, and durability ensures secure fastening, a long service life, and minimal maintenance, even in harsh industrial and marine settings. These stud bolts create reliable and long-lasting joints for both structural and process-critical applications.
