Home > Duplex Steel > Duplex Steel S31803 Bolts
At Nasir Nickel Alloys in Manama, Bahrain, Duplex Steel S31803 Bolts are engineered to provide excellent strength, corrosion resistance, and durability for demanding industrial applications. Made from high-performance duplex stainless steel with a balanced austenitic-ferritic microstructure, these bolts resist pitting, crevice corrosion, and stress-corrosion cracking in chloride-rich and chemically aggressive environments. Precision-manufactured for dimensional accuracy and mechanical reliability, Duplex Steel S31803 Bolts ensure secure fastening under high-pressure and high-temperature conditions. Ideal for chemical processing, petrochemical, oil and gas, power generation, and marine industries, they deliver robust, long-lasting, and high-performance fastening solutions.
Duplex Steel S31803 Bolts are primarily composed of chromium, nickel, molybdenum, and nitrogen, forming a balanced austenitic-ferritic microstructure. This composition provides high tensile and yield strength, excellent toughness, and superior resistance to pitting, crevice corrosion, and stress-corrosion cracking. The bolts maintain mechanical integrity, dimensional stability, and performance under thermal cycling, high-pressure, and mechanically demanding conditions. Combining corrosion resistance, high strength, and durability, Duplex Steel S31803 Bolts ensure long-lasting, reliable performance in chemical, petrochemical, offshore, marine, and power generation applications where conventional stainless steels may fail.
|
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 Nasir Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Duplex Steel S31803 Bolts in Manama, Bahrain, providing cutting-edge solutions for all your piping needs. Our state-of-the-art production plants are strategically located in the Bahrain, 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 are widely used in industries that require corrosion-resistant, high-strength, and durable fastening solutions. They are essential in chemical and petrochemical plants for securing equipment, piping systems, reactors, and pressure vessels exposed to acids, chlorides, and oxidizing chemicals. Oil and gas industries utilize these bolts in offshore platforms, subsea pipelines, and high-pressure systems. Power generation facilities employ Duplex Steel S31803 Bolts in turbines, boilers, and cooling water systems. Marine and desalination plants rely on them for seawater-resistant fastening. These bolts ensure secure connections, structural integrity, leak-tight performance, and long-term reliability in harsh, corrosive, and high-pressure environments.
