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Adrian Nickel Alloys stands out as a trusted manufacturer and supplier of **Duplex Steel Screws** right here in Singapore, Pulau Ujong. They provide high-strength, corrosion-resistant fastening solutions that are perfect for tough industrial settings. Made from top-quality duplex stainless steel, these screws boast a well-balanced austenitic-ferritic microstructure, which gives them exceptional resistance to pitting, crevice corrosion, and stress corrosion cracking—even in challenging environments like those rich in chlorides or marine conditions. With a variety of sizes, types, and thread configurations available, these screws are precision-engineered to ensure secure fastening, impressive dimensional accuracy, and long-lasting performance in both structural and mechanical assemblies.
Typically, **Duplex Steel Screws** contain 22–25% chromium, 5–7% nickel, 3–4% molybdenum, and nitrogen, all of which boost their mechanical strength and corrosion resistance. They deliver a tensile strength of about 620–800 MPa and a yield strength of roughly 450–550 MPa, along with excellent impact toughness, making them perfect for high-stress applications and harsh environmental conditions.
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Standard |
ASTM A240 / ASME SA240 |
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Thickness |
0.2mm – 5.0mm |
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Width |
3.2mm – 1500mm |
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Length |
AS PER CUSTOMER’S REQUIREMENT |
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Test Certificate |
Yes |
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Coils Hardness |
Half Hard, Quarter Hard, Soft, Hard, Spring Hard |
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Finish |
Hot rolled Coils (HR), Cold rolled Coils (CR), NO.1, 2B, 2D, 2H, 2R, No.4, HAIRLINE, SCOTCH BRITE, SATIN FINISH, NO.8, BA. |
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Form |
Coil / Strip |
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | Fe |
| Super Duplex Steel Coils | 0.05 max | 1.00 max | 1.00 max | 0.030 max | 0.010 max | 24.00 – 26.00 | 3.00 – 4.00 | 6.00 – 8.00 | 0.20 – 0.30 | 57.61 min |
| Grades | Density (g/cm 3) | Density (lb/in 3) | Melting Point (°C) | Melting Point (°F) |
| Super Duplex Steel Coils | 7.8 | 0.281 | 1350 | 2460 |
At Adrian Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Super Duplex Steel Coils 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 Screws** commonly used in offshore oil and gas platforms, chemical processing plants, desalination facilities, pulp and paper industries, marine engineering, and water treatment systems. They’re ideal for securing equipment, machinery, structural frameworks, and pipelines that face exposure to seawater, brine, and corrosive chemicals. Their unique blend of strength, durability, and corrosion resistance makes them a reliable choice for critical applications, helping to minimize maintenance needs and enhance long-term operational safety.
