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Marsh Nickel Alloys, located in Canberra, Australia, stands out as a top manufacturer and supplier of high-quality Duplex Steel pipes. With cutting-edge manufacturing technology and rigorous quality controls in place, the company crafts pipes that excel in corrosion resistance, mechanical strength, and durability. They cater to various industries, including oil and gas, chemical processing, marine, and power generation, offering Duplex Steel pipes that are built to perform reliably even in the toughest and most corrosive environments.
Duplex Steel pipes boast a well-balanced microstructure of austenitic and ferritic stainless steel, featuring around 22% chromium, 5-6% nickel, 3% molybdenum, and nitrogen. This unique blend grants them remarkable resistance to pitting, crevice corrosion, and stress corrosion cracking. On the mechanical side, Duplex Steel pipes showcase impressive tensile strength, toughness, and fatigue resistance, ensuring they hold up well under high pressure, temperature changes, and mechanical stress.
| Specifications | Cr | Ni | Mo | N | Mn | W | Cu |
| 2101 LDX | 21.5 | 1.5 | 0.3 | 0.22 | 5 | – | – |
| DX2202 | 23 | 2.5 | 0.3 | 0.2 | 1.5 | – | – |
| RDN 903 | 20 | 1.8 | 0.2 | 0.11 | 4.2 | – | – |
| 2304 | 23 | 4.8 | 0.3 | 0.10 | – | – | – |
| 2205 | 22 | 5.7 | 3.1 | 0.17 | – | – | – |
| Grade | C≤ | Mn≤ | P≤ | S≤ | Si≤ | Ni | Cr | Mo | N | Cu |
| S31803 | 0.03 | 2.00 | 0.03 | 0.02 | 1.00 | 4.5–6.5 | 21.0–23.0 | 2.5–3.5 | 0.08–0.20 | – |
| S32205 | 0.03 | 2.00 | 0.03 | 0.02 | 1.00 | 4.5–6.5 | 22.0–23.0 | 3.0–3.5 | 0.14–0.20 | – |
| S32750 | 0.03 | 1.20 | 0.035 | 0.02 | 0.80 | 6.0-8.0 | 24.0-26.0 | 3.0-5.0 | 0.24-0.32 | 0.5 |
| Mechanical properties | Tensile,min,ksi[MPa] | Yield,min,ksi[MPa] | Elongation,%(min) | Hardness,HB(max) |
| S31803 | 90 [620] | 65 [450] | 25 | 290 |
| S32205 | 95 [655] | 65 [450] | 25 | 290 |
| S32750 | 116 [800] | 80 [550] | 15 | 300 |
At Marsh Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Duplex Steel Pipe in Canberra, Australia, providing cutting-edge solutions for all your piping needs. Our state-of-the-art production plants are strategically located in the Australia, 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.
In chemical processing plants, Duplex Steel pipes are a go-to choice for transporting aggressive chemicals and fluids. The oil and gas sector relies on these pipes for offshore platforms, refineries, and pipelines, thanks to their corrosion resistance and robust mechanical properties. In marine applications, they are used in seawater cooling and desalination systems, while power generation facilities utilize Duplex Steel pipes in boilers, heat exchangers, and cooling systems, reaping the benefits of their outstanding corrosion resistance and mechanical reliability.