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Hakan Nickel Alloys, a prominent manufacturer and supplier located in Istanbul, Turkey, specializes in high-quality Duplex Steel S31803 Bolts that are crafted for exceptional strength, durability, and resistance to corrosion. These bolts are designed to perform reliably even in tough, chloride-rich environments, blending the best features of both austenitic and ferritic stainless steels. With a commitment to precision and stringent quality standards, the Duplex Steel S31803 Bolts from Hakan Nickel Alloys promise long-lasting performance, accurate dimensions, and robust mechanical integrity, making them ideal for industries such as chemical, petrochemical, marine, oil & gas, and power generation.
Duplex Steel S31803 Bolts are mainly made up of iron (the balance), chromium (19–22%), nickel (4–6%), molybdenum (2–3%), and nitrogen, which boosts their resistance to pitting, stress corrosion cracking, and crevice corrosion. On the mechanical side, these bolts offer impressive tensile strength ranging from 700–900 MPa, with yield strength that’s nearly double that of standard stainless steels. They also showcase excellent fatigue resistance, toughness, and remarkable dimensional stability across a wide temperature range, ensuring reliable fastening solutions in critical applications.
|
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 Hakan Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Duplex Steel S31803 Bolts in Istanbul, Turkey, providing cutting-edge solutions for all your piping needs. Our state-of-the-art production plants are strategically located in the Turkey, 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 use in the chemical and petrochemical sectors for securing equipment, pipelines, and process systems that come into contact with aggressive fluids. In the oil and gas industry, they are essential for offshore platforms, subsea systems, and pipelines where strength and corrosion resistance are paramount. The marine sector utilizes them in seawater cooling systems, desalination plants, and shipbuilding projects. Additionally, power generation facilities rely on these bolts in boilers, turbines, and high-pressure systems. Their unique blend of high strength, corrosion resistance, and durability makes Duplex Steel S31803 Bolts vital for secure and dependable fastening in demanding industrial settings.