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Copper Nickel Screws are designed to offer outstanding corrosion resistance, remarkable durability, and reliable performance even in the toughest marine and industrial settings. Made from top-notch copper-nickel alloys like CuNi 90/10 and CuNi 70/30, these screws excel at resisting seawater, brine, biofouling, and corrosion fatigue. Their impressive thermal stability and mechanical strength make them perfect for heavy-duty fastening tasks that face moisture, chemicals, and high temperatures. You’ll find Copper Nickel Screws commonly used in shipbuilding, desalination plants, offshore structures, heat exchangers, and power generation systems, ensuring dependable and secure fastening in challenging conditions.
Copper Nickel Screws mainly consist of copper with 10–30% nickel, plus a touch of iron and manganese to boost strength and corrosion resistance. This blend provides excellent protection against seawater corrosion, stress corrosion cracking, and erosion. In terms of mechanics, CuNi screws showcase good tensile strength, high ductility, and impressive thermal stability. They hold up well under high temperatures and in harsh marine environments. Their anti-biofouling properties, along with great weldability and oxidation resistance, make them a trustworthy choice for long-lasting industrial and marine applications.
| Specifications | ASTM / ASME SB 61 / 62 / 151 / 152 |
| Dimensions | ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings |
| Size | 1/2” to 12″ |
| Standards | ASTM, ASME Washer, ANSI Washer, DIN Washer, EN Washer, BS Washer etc |
| Grade | Copper & Copper Nickel Nickel 90/10 (C70600 ), Cupro Nickel 70/30 (C71500), UNS C71640 |
| Class | 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS DIN |
| Copper Nickel | Ni | Pb | Cu | Fe | Mn | Zn |
| 9-11 max | 0.05 max | 88.6 min | 1.8 max | 1.0 max | 1 max |
| Density | Elongation | Yield Strength (0.2%Offset) | Melting Point | Tensile Strength |
| 8.1 g/cm3 | 30 % | Psi – 35,000, MPa – 241 | 1443 °C (2430 °F) | Psi -80,000, MPa -551 |
At Nasir Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Coper Nickel Screw in Manama, Bahrain, providing cutting-edge solutions for all your piping needs. Our state-of-the-art production plants are strategically located in the Bahrain, 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.
Copper Nickel Screws are a go-to choice in marine and offshore engineering, finding their place in shipbuilding, seawater intake systems, condensers, heat exchangers, and cooling systems, all thanks to their incredible resistance to seawater. In desalination plants, you’ll spot them in high-pressure piping and evaporator units. Over in the power generation sector, they play a crucial role in securing components that come into contact with steam and corrosive fluids. These screws are also essential in chemical processing equipment, oil refineries, coastal structures, and underwater mechanical systems, all due to their outstanding resistance to corrosion, biofouling, and heat. They provide reliable, long-lasting fastening even in the toughest operational conditions.
