Home > Duplex Steel > Duplex Steel S31803 Stud Bolts
Fajar Metals, a top-notch manufacturer and supplier located in Jakarta, Indonesia, specializes in high-quality Duplex Steel S31803 Stud Bolts. These bolts are designed to provide strong and corrosion-resistant fastening solutions, perfect for tough environments. They work wonders for flanged connections and structural joints across various industries, including oil & gas, chemical processing, marine, power generation, and offshore platforms. Renowned for their impressive mechanical strength and resistance to chloride-induced stress corrosion, Duplex S31803 offers a cost-effective choice compared to pricier nickel alloys. Fajar Metals provides these stud bolts in a variety of diameters, lengths, and thread types, ensuring precision and durability for every application.
Duplex Steel S31803 Stud Bolts are made from a carefully crafted alloy that includes chromium, nickel, molybdenum, nitrogen, and iron. This well-balanced mix results in a dual-phase microstructure that boosts the material’s resistance to pitting, crevice corrosion, and stress corrosion cracking, especially in chloride-heavy environments. These stud bolts boast excellent mechanical properties, featuring a typical yield strength of 450 MPa and a tensile strength of around 620 MPa. Fajar Metals guarantees high dimensional accuracy, consistent metallurgy, and top-notch threading, making these bolts a reliable choice for securing components in critical, high-stress situations.
| 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 Fajar Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Duplex Steel S31803 Stud Bolts in Jakarta, Indonesia, providing cutting-edge solutions for all your piping needs. Our state-of-the-art production plants are strategically located in the Indonesia, 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.
Duplex Steel S31803 stud bolts offer exceptional strength and corrosion resistance, combining the best properties of both ferritic and austenitic stainless steels. They provide high resistance to pitting, crevice corrosion, and stress corrosion cracking, making them ideal for harsh environments. Their high tensile strength and durability ensure long-lasting performance in demanding applications. Additionally, Duplex Steel S31803 is cost-effective due to its lower nickel content compared to other stainless steels, offering a balance of performance and value.