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At Hazlewood Fasteners in Canberra, Australia, our Copper Nickel screws are crafted for environments where corrosion, saltwater exposure, and biofouling stand as relentless adversaries. Designed for uncompromising performance in marine, desalination, and offshore engineering, these screws anchor critical systems with steadfast grip and metallurgical confidence. Whether securing pipe assemblies, marine hardware, or seawater handling equipment, Copper Nickel screws offer enduring durability, thermal balance, and superior corrosion immunity. When ordinary materials fail in harsh, chloride-rich atmospheres, our Cu-Ni screws deliver unwavering fastening integrity and structural assurance—making them the elite fastening choice for ocean-exposed and industrial fluid-service environments.
Copper Nickel screws are produced from a high-performance copper-nickel alloy typically available in 90/10 or 70/30 grades, infused with controlled iron and manganese to strengthen structural capability and marine corrosion resistance. Exhibiting outstanding resilience to pitting, stress-corrosion cracking, saltwater erosion, and bio-attachment, these screws maintain secure preload and long-term mechanical stability under vibration, pressure, and cyclic temperature shifts. Their superior tensile strength, natural antimicrobial behavior, and excellent thermal consistency make them ideal for submerged and high-moisture installations demanding enduring fastening strength.
| 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 |
| 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 |
To satisfy our clients needs by providing high quality products at competitive price as per the schedule and to maintain long term relationship with our clients.
Copper Nickel screws are utilized across saltwater handling systems, marine propulsion equipment, offshore platforms, desalination units, cooling circuits, shipbuilding, naval machinery, and coastal infrastructure. They secure pumps, valves, piping flanges, heat-exchange systems, underwater components, and deck hardware exposed to seawater and corrosive humidity. Perfectly suited for coastal power facilities, refinery seawater circuits, condenser systems, and port-side structures, these screws prevent galvanic attack and mechanical fatigue in ocean-contact environments. Where high-salinity conditions, fluid turbulence, and long-term corrosion threats exist, Copper Nickel screws provide durable fastening security and marine-grade performance without compromise.
Copper Nickel screws at Hazlewood Fasteners are packed carefully so that their quality is not compromised in any way. Every screw is packed in a protective material to avoid any form of damage, rusting, or contamination during transportation. Our packaging material is a durable carton and we provide packaging services to suit your particular needs. The products are well packed and labeled to ensure easy identification and handling to show our commitment in providing quality products in good condition.
Hazlewood Fasteners is a leading manufacturer and supplier of high-quality fasteners in Canberra, Australia, with over 8 years of experience serving global industries.
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