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Based right in the industrial heart of Kinshasa, Okoye Nickel Alloys has built its reputation on providing robust and reliable materials that stand up to the toughest challenges. Our specialty lies in supplying high-performance components like Duplex Steel S32205 Nuts, engineered for those critical applications where standard materials simply fall short. We understand the unique demands of the region’s industries and are committed to delivering not just a product, but a dependable solution you can trust to perform under pressure, ensuring the integrity and longevity of your vital projects and equipment.
The unique strength of these nuts comes from their balanced composition, which is approximately half austenite and half ferrite stainless steel. This structure is achieved with a blend of chromium, nickel, molybdenum, and nitrogen. This specific chemistry grants them an exceptional combination of high tensile strength and impressive resistance to corrosion, particularly against stress corrosion cracking. Essentially, they offer the best of both worlds: the toughness of ferritic steels and the ductility and corrosion resistance of austenitic grades, all in a single, highly durable component.
Material | Specification | Standards | Size | Length |
Duplex Steel S32205 | IS BS ASTM | ASTM / ASME – A/ SA 479 / 479 | 3 mm | M02 to M30 |
| Cr | N | Ni | C | Mn | Si | P | S | Mo | |
|---|---|---|---|---|---|---|---|---|---|
| S31803 | min: 21.0 max: 23.0 | min: 0.08 max: 0.20 | min: 4.5 max: 6.5 | 0.03 max | 2.0 max | 1.0 max | 0.03 max | 0.02 max | min: 2.5 max: 3.5 |
| S32205 | min: 22.0 max: 23.0 | min: 0.14 max: 0.20 | min: 4.5 max: 6.5 | 0.03 max | 2.0 max | 1.0 max | 0.03 max | 0.02 max | min: 3.0 max: 3.5 |
|
Grade
|
Tensile Strength
(MPa) min |
Elongation
(% in 50mm) |
Yield Strength
0.2% Proof (MPa) min |
Hardness
Rockwell C (HR C) |
|---|---|---|---|---|
|
UNS-S31803
|
650-880
|
25
|
448
|
|
|
UNS-S32205
|
621
|
25
|
448
|
21 max
|
At Okoye Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Duplex Steel S32205 Nuts in Kinshasa, Congo, providing cutting-edge solutions for all your piping needs. Our state-of-the-art production plants are strategically located in the Congo, 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.
You’ll typically find Duplex Steel S32205 Nuts hard at work in environments that would quickly degrade lesser materials. They are indispensable in the offshore and marine sectors, securing structures exposed to salty seawater. The chemical processing and oil and gas industries rely on them for piping systems and pressure vessels handling corrosive fluids. They are also a perfect fit for pulp and paper manufacturing plants and in various construction projects, especially those near the coast, where their ability to resist pitting and corrosion significantly extends the service life of the entire assembly.
