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Jyoti Steels of Mumbai, India, is one of the main producers and providers of high-end Duplex Steel S31803 Bolts. These bolts stand out for having superior strength, good corrosion resistance, and longevity in severe environmental conditions. All fasteners in Jyoti Steels are produced to be in line with international standards as well as stiff industrial demands. Operating in sectors like oil & gas, marine, chemical processing, and construction, the organization strives to provide quality, dependable bolting solutions. Equipped with sophisticated production units and qualified quality control, Jyoti Steels is a reliable business partner for Duplex Steel S31803 Bolts across the world.
Duplex Steel S31803 Bolts consist of 21–23% Chromium, 4.5–6.5% Nickel, 2.5–3.5% Molybdenum, and 0.14–0.2% Nitrogen, with Iron as the major element. Trace elements are Manganese up to 2% and Silicon up to 1%. The bolts offer high tensile strength (620–880 MPa), yield strength around 450 MPa, and elongation of 25–30%. The density is about 7.8 g/cm³, and the melting point is close to 1350°C. The two-phase austenitic-ferritic microstructure provides these bolts outstanding resistance to crevice corrosion, pitting, and stress corrosion cracking, so they are perfect for application in aggressive, chloride-bearing environments.
|
Material |
Specification |
Standards |
Size
|
Length |
|
Duplex Steel S31803
|
IS
BS
ASTM
|
ASTM / ASME – A/ SA 479 / 479 |
3 mm
to
200 mm
|
M02 to M30
|
|
Grade |
Tensile Strength
(MPa) min |
Elongation
(% in 50mm) |
Yield Strength
0.2% Proof (MPa) min |
Hardness
Rockwell C (HR C) |
|---|---|---|---|---|
| Duplex Steel Bolts S31803 |
621 |
25 |
448 |
21 max |
At Jyoti Steels, we take pride in being the largest supplier, exporter, and manufacturer of Duplex Steel S31803 Bolts in Mumbai, India, providing cutting-edge solutions for all your piping needs. Our state-of-the-art production plants are strategically located in the India, 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 Bolts find extensive application in industries requiring high strength and corrosion resistance. In the oil and gas sector, they play a vital role in the assembly of offshore rigs, pipelines, and pressure vessels. Marine applications involve shipbuilding, seawater cooling systems, and desalination plants. In chemical and petrochemical processing, these bolts are used to secure tanks, heat exchangers, and pipelines handling corrosive materials. They are also employed in pulp and paper mills, water treatment plants, and structural uses needing resistance to stress and fatigue. Their reliability and strength make them a first priority for demanding industrial conditions.
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