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Puri Fasteners is a trusted manufacturer and supplier of high-quality Duplex Steel Stud Bolts S31803 in Chennai, delivering reliable fastening solutions built for demanding industrial environments. With a strong focus on precision engineering and advanced manufacturing practices, the company ensures superior product performance and consistency. Duplex Steel S31803 Stud Bolts are known for their exceptional corrosion resistance, high mechanical strength, and durability, making them ideal for challenging applications. Puri Fasteners is committed to excellence, timely delivery, and customer satisfaction, making them a preferred choice for industries requiring robust, long-lasting, and internationally compliant fastening components.
Duplex Steel Stud Bolts S31803 are made from a dual-phase alloy containing chromium, molybdenum, nickel, and nitrogen, providing excellent corrosion resistance and structural strength. This grade offers high yield and tensile strength, outperforming traditional stainless steels. It maintains exceptional toughness while resisting pitting, crevice corrosion, and stress corrosion cracking in chloride-rich environments. The balanced microstructure allows the material to perform reliably under high pressure and varying temperatures, making these stud bolts ideal for conditions that require both durability and stability.
| 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 % |
| 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 |
To satisfy our clients needs by providing high quality products at competitive price as per the schedule and to maintain long term relationship with our clients.
Duplex Steel Stud Bolts S31803 are widely used across industries where strong, corrosion-resistant fasteners are essential. They are extensively applied in offshore platforms, marine engineering, and shipbuilding due to their resistance to seawater and harsh coastal conditions. In chemical processing, oil and gas refineries, and petrochemical plants, they provide dependable performance when exposed to corrosive chemicals and high-pressure systems. These stud bolts are also suitable for desalination units, heat exchangers, heavy machinery, and structural frameworks. Their excellent fatigue strength and reliability make them a preferred choice for challenging environments requiring long-term stability and secure fastening.
At Puri Fasteners, Duplex Steel Stud Bolts S31803 are meticulously packaged to ensure safe and secure delivery. Each bolt is individually inspected and wrapped in protective material to prevent damage during transit. We use durable, high-quality packaging materials that safeguard against environmental factors such as moisture and impact. The bolts are organized in sturdy, labeled cartons for easy identification and handling. Our packaging process guarantees that your Duplex Steel Stud Bolts S31803 arrive in pristine condition, ready for immediate use.
Puri Fasteners is a leading manufacturer and supplier of high-quality fasteners in Chennai, India, with over 8 years of experience serving global industries.
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