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| Grade | Code | UNS | Duplex Stainless Steel |
| 1.4460 / AISI 329 | X3CrNiMoN27-5-2 | S32900 |
1.4460 / AISI 329, is a duplex stainless steel grade distinguished by its high mechanical strength, good toughness and strong resistance to stress corrosion cracking. Its microstructure, combining austenitic and ferritic phases, provides a higher yield strength than conventional austenitic stainless steels. Its high strength and good weldability under suitable conditions provide reliable performance in service conditions where mechanical and corrosive loads occur together.
| C % | Si % | Mn % | P % | S % | Cr % | Ni % | Mo % | N % | Fe % |
| ≤ 0.05 | ≤ 1.00 | ≤ 2.00 | ≤ 0.035 | ≤ 0.03 | 25.00 – 28.00 | 4.50 – 6.50 | 1.30 – 2.00 | 0.05–0.20 | Bal. |
Note: EN 10088-3 has been used as the basis.
| Product Form | Rp0.2 [MPa] | Rm [MPa] | Elongation [%] | Hardness [HB] | Density [g/cm³] |
| Bar | ≥ 450 | 620–880 | ≥ 20 | ≤ 260 | 7.80 |
| Sector | Most Common Products |
| Chemical Industry | Pump shafts, valve components, agitator shafts |
| Oil & Petrochemical | Pump shafts, valve stems, fasteners |
| Paper & Pulp | Pump shafts, agitator shafts, process equipment components |
| Marine & Offshore | Propeller shafts, pump shafts, fasteners |
| Machinery & Hydraulics | Hydraulic cylinder rods, piston rods, high-strength machine shafts |
| Food & Process Industry | Pump components, agitator shafts, process equipment components |
1.4460 / AISI 329, is a duplex stainless steel grade preferred for demanding service conditions where conventional stainless steels may be insufficient, as it combines high strength with corrosion resistance. Its high yield strength can provide opportunities for design optimization, particularly for components operating under high mechanical loads. At the same time, proper control of the manufacturing process is important because suitable temperature control is required during production and welding operations. When processed correctly, it provides a long service life and reliable operating performance.
1.4460, AISI 329, X3CrNiMoN27-5-2, UNS S32900
| Product Form | ASTM | DIN |
| Bar | ASTM A276 / A276M | DIN EN 10088-3 |
1.4462 / Duplex 2205 – The closest and most practical alternative.
1.4410 / Super Duplex 2507 – For applications requiring higher corrosion resistance.
1.4501 / Super Duplex F55 – A higher-level alternative for more aggressive service conditions.
Swiss Steel Group / Ugitech – UGIMA®-X 4460
BGH Edelstahl – 1.4460 / X3CrNiMoN27-5-2
Note: The information contained in this datasheet is for informational purposes only; no liability is accepted.
