Request For Our Latest Prices On Duplex Steel Nuts S31803 in Houston , USA!
Being a top manufacturer and supplier in Houston, USA, Brian Fasteners supplies excellent quality Duplex Steel Nuts S31803. These nuts are precision-made to match Duplex Steel bolts and stud bolts, offering secure and highly resistant-to-corrosion connections under harsh industrial conditions. Our emphasis on durability ensures these nuts play a crucial role in the integrity and longevity of critical assemblies.
Duplex Steel Nuts S31803 consist mainly of about 22% chromium, 5.5% nickel, 3% molybdenum, and 0.17% nitrogen. The dual-phase (austenite-ferrite) microstructure makes them highly resistant to pitting, crevice corrosion, and chloride stress corrosion cracking. S31803 nuts have high strength, good hardness, and resistance to galling, making them give reliable torque retention and fast, secure fastening in corrosive and high-stress environments.
| 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 % |
| 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 |
| Specifications | ASTM A479 / ASME SA479 |
| Standards | DIN, ASTM, BS and all International Standards |
| Length | 3 mm to 200 mm |
| Size | M3 – M56 | 3/6″ to 2″ | Custom Sizes |
| Type | Hex Head Bolts, Square Bolts, U bolts, Eyebolts, T bolt, Hex Bolt, Lag Bolts, Countersunk Bolts, Hex Head nuts, Square nuts, Locknuts, Eye nuts, wing nuts, T nuts, Panel Nuts, Coupling Nuts, Dome nuts, Acorn Nuts |
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 Nuts S31803 are widely applied in combination with relevant Duplex Steel bolts and stud bolts in chemical processing facilities, oil and gas sectors, and marine applications. They are essential in fastening flanged joints in pipelines, pressure vessels, and heat exchangers, as well as in structural purposes in offshore platforms and desalination plants where high strength and superior corrosion resistance are needed for long-term operational integrity.
At Brian Fasteners, Duplex Steel Nuts S31803 are meticulously packaged to ensure their integrity and quality during transit. Each nut is individually inspected and wrapped in protective materials to prevent damage. For bulk orders, nuts are securely packed in durable, corrosion-resistant containers. Our packaging solutions are designed to maintain product excellence, safeguarding against environmental factors and ensuring that the nuts arrive in optimal condition. Trust Brian Fasteners for secure and reliable packaging of your high-quality components.
Brian Fasteners is a leading manufacturer and supplier of high-quality fasteners in Houston , USA, with over 8 years of experience serving global industries.
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