Home > Duplex Steel > Duplex Steel Nuts
Marsh Nickel Alloys, located in Canberra, Australia, is a well-respected manufacturer and supplier of top-notch Duplex Steel nuts. By employing cutting-edge manufacturing methods and rigorous quality control, the company creates nuts that boast exceptional corrosion resistance, mechanical strength, and long-lasting durability. Marsh Nickel Alloys caters to vital industries like oil and gas, chemical processing, marine, and power generation, providing Duplex Steel nuts designed for secure fastening in highly corrosive and challenging environments.
Duplex Steel nuts feature a unique dual-phase microstructure made up of austenitic and ferritic stainless steel, enriched with high levels of chromium, nickel, molybdenum, and nitrogen. This distinctive blend offers remarkable resistance to pitting, crevice corrosion, and stress corrosion cracking. On the mechanical side, Duplex Steel nuts showcase impressive tensile and yield strength, outstanding toughness, and excellent fatigue resistance, ensuring reliability even under extreme pressure and temperature conditions.
|
Material |
Specification |
Standards |
Size
|
Length |
|
Duplex Steel
|
IS
BS
ASTM
|
ASTM / ASME – A/ SA 479 / 479 |
3 mm
to
200 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-S 31803 | 650-880 | 25 | 448 | |
UNS-S 32205 | 621 | 25 | 448 | 21 max |
At Marsh Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Duplex Steel Nuts 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 plants, Duplex Steel nuts are commonly used to fasten piping systems, valves, and equipment that come into contact with harsh chemicals. In the power generation sector, they find their place in boilers, turbines, and heat exchangers that operate at high temperatures. The oil and gas industry relies on Duplex Steel nuts for offshore platforms, refineries, and subsea installations, while the marine industry incorporates them in shipbuilding and desalination systems, thanks to their remarkable corrosion resistance and mechanical performance.