Home > Super Duplex Steel > Super Duplex Steel Nuts
Elvis Nickel Alloys, a top-notch manufacturer and supplier based in Houston, USA, specializes in high-performance Super Duplex Steel Nuts that are celebrated for their remarkable strength and outstanding resistance to corrosion. Crafted from premium materials like UNS S32750 (SAF 2507) and UNS S32760 (Zeron® 100), these nuts boast a dual-phase (austenitic-ferritic) microstructure, which makes them incredibly resilient against chloride stress corrosion cracking, pitting, and crevice corrosion. They come in various styles, including hex nuts, lock nuts, cap nuts, and heavy hex nuts, all adhering to international standards like ASTM A479, ASTM A276, and DIN 934, ensuring they stand the test of time in critical applications.
Super Duplex Steel Nuts generally consist of 24–26% chromium, 6–8% nickel, 3–5% molybdenum, 0.2–0.3% nitrogen, and 0.5–1% copper, along with small amounts of manganese, silicon, and tungsten. These components contribute to a high PREN (>40), guaranteeing excellent resistance to localized corrosion in harsh environments. These nuts can achieve tensile strength up to 800 MPa and yield strength of at least 550 MPa, along with remarkable toughness and impact resistance, even in low temperatures. Their mechanical properties make them perfect for high-stress, high-pressure applications in corrosive settings.
| Standard | : | ASTM A193 / A479, ASME SA193 / A479 |
| Dimension | : | ASTM,DIN, BS,GB, IS and all International Standards |
| Length | : | 3 mm to 200 mm |
| Nut Size | : | M02 to M33 | Custom Sizes |
| Heat Treatment | : | Annealing, Stress Relieving, Case Hardening, Quenching and Tempering. |
| Type | : | Hex Nut, Heavy Hex Nut, Lock Nut, Nylock Nut, Weld Nut, Dome Nut, Flange Nut, Square Nut, Eye Nut etc. |
| C | Cr | Ni | Mo | N | Others |
|---|---|---|---|---|---|
| 0.020 | 25 | 7 | 4.0 | .27 | S=0.001 |
| Ultimate Tensile Strength, ksi | 116 min. |
|---|---|
| 0.2% Offset Yield Strength 0.2%, ksi | 80 min. |
| 0.1% Offset Yield Strength 0.2%, ksi | 91 min. |
| Elongation in 2 inches, % | 15 min. |
| Hardness Rockwell C | 32 max. |
| Impact Energy, ft.-lbs. | 74 min. |
At Elvis Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Super Duplex Steel Nuts in Texas, USA, providing cutting-edge solutions for all your piping needs. Our state-of-the-art production plants are strategically located in the USA, 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.
Super Duplex Steel Nuts are widely used in industries that require high strength and resistance to harsh environments. They are crucial for offshore oil and gas platforms, subsea equipment, and chemical processing plants, where they endure extreme conditions and corrosive substances. These nuts are also essential in marine applications, such as shipbuilding and desalination plants, due to their excellent resistance to seawater corrosion. Additionally, they are used in petrochemical and power generation industries for reliable and durable fastening solutions.
