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Adrian Nickel Alloys, a leading manufacturer and supplier located in Singapore, Pulau Ujong, is all about high-quality Duplex Steel Nuts. These nuts are celebrated for their precision, strength, and reliability, crafted with advanced techniques and strict quality controls to meet international standards. Adrian Nickel Alloys caters to industries that need durable fasteners capable of handling tough environments. Their Duplex Steel Nuts boast excellent corrosion resistance, mechanical strength, and a long service life, making them perfect for industrial, oil & gas, chemical, marine, and infrastructure applications where safety and performance are crucial.
What sets Duplex Steel Nuts apart is their unique blend of austenitic and ferritic stainless steels, which gives them outstanding mechanical properties and corrosion resistance. Infused with chromium, nickel, and molybdenum, these nuts are designed to resist stress corrosion cracking, pitting, and crevice corrosion while maintaining impressive tensile strength and toughness. Their sturdy construction guarantees reliable performance even in extreme temperatures, heavy loads, and harsh chemical environments, making them a go-to choice for critical fastening needs across various industries.
| 
 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 Adrian Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Duplex Steel Nuts in Pulau ujong, Singapore , providing cutting-edge solutions for all your piping needs. Our state-of-the-art production plants are strategically located in the Pulau ujong, 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 find Duplex Steel Nuts widely used in sectors like oil and gas, chemical, petrochemical, marine, construction, and power generation. They’re perfect for securing bolts, flanges, machinery, and structural components in environments that face seawater, corrosive chemicals, or high pressure. Their durability and wear resistance ensure long-term reliability and safety in demanding applications. Adrian Nickel Alloys is committed to ensuring that each nut meets exact specifications, delivering consistent quality, superior strength, and dependable performance for all industrial fastening needs.