Cupro Nickel 70/30 Fasteners are essential for many industries, ranging from marine engineering to oil and gas. Known for their excellent resistance to various forms of corrosion, cupro-nickel fasteners are also strong, durable, and machinable. Cupro nickel 70/30 fasteners are excellent materials with unique properties that make them highly versatile. They're extensively used in marine engineering, power generation, and chemical processing environments due to their exceptional resistance to corrosion and durability.
Features of Cupro Nickel 70/30 Fasteners
Cupro Nickel 70/30 Fasteners are known for their unique properties, such as high tensile strength, good flexibility, and excellent resistance to seawater corrosion. They are highly versatile, making them ideal for various applications, especially those in marine environments. Additionally, they have a long service life even in highly corrosive environments and are resistant to biofouling.
Table Content
Corrosion Resistance of Cupro Nickel 70/30 Fasteners
One of the essential features of cupro-nickel 70/30 fasteners is their excellent resistance to corrosion, especially in saltwater environments. Marine engineers, shipbuilders, and chemical processing industries are the primary users of this alloy. The 70/30 Cupro Nickel alloy's resistance to seawater conditions makes it an excellent material for underwater pipelines, offshore platforms, and marine components.
Chemical Composition of Cupro Nickel 70/30 Fasteners
Cupro nickel 70/30 fasteners comprise 70% copper, 30% nickel, and small amounts of other elements such as manganese, iron, and tin. The alloy's exact chemical composition may vary depending on the manufacturer and intended application, but the ratios of copper and nickel remain the same. Iron and manganese in cupro-nickel 70/30 alloys improve the material's strength and workability while enhancing resistance to corrosion and biofouling.
Applications of Cupro Nickel 70/30 Fasteners
Cupro Nickel 70/30 Fasteners are highly versatile and can be used in different industries. The alloy is corrosion-resistant, making it ideal for marine and offshore applications, such as underwater pipelines, offshore drilling, and desalination plants. The fasteners can also be used in shipbuilding, power generation, and chemical processing industries.
Machining of Cupro Nickel 70/30 Fasteners
Cupro nickel 70/30 fasteners are machinable. Their unique properties make them relatively easy to cut, with conventional machining techniques often efficient in fabricating and assembling desired part shapes. The alloy's resistance to work hardening makes them ideal for cold-forming operations such as bending.
Forging or Forming & Machining
Hole Drilling & Surface Treatment
Quality Control & Marking, Identification
Final Inspection and Packaging
| Standard | ASTM B151 / ASME SB151 |
| Bolt / Screw Size | M3 – M56 | 3/6″ to 2″ | Custom Sizes |
| Nuts Size | M3 – M56 | 3/6″ to 2″ | Custom Sizes |
| Washers Size | M3 – M56 | 3/6″ to 2″ | Custom Sizes |
| Machine Screws Size | M1.6 – M12 |
| Self Tapping Screw Size | No.2 – No. 14 |
| Length | 3 mm to 200 mm |
| Threads | UNF, BSW, BSF, METRIC, UNC, or as required |
| Fasteners |
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| Form | Hex, Threading, Square, Round as per Gauge Etc. |
| Threads Configuration | ASME B1.1 2A/3A – 2B/3B Inch Unified Threads and B1.13M 6h-6G Metric Coarse Threads |
| Certification | Dual Certified As per ASTM & ASME Codes |
| Dimensions | DIN 931, 933, 934, 7991, 976, 125, ASME B18.2.1, B18.3 |
| Threads | Unless otherwise specified, the threads shall be rolled or cut and tapped horizontally or vertically |
| Test Certificate | as per EN 10204 / 3.1 Manufacturer Test Certificate |
| Additional Certifications | PED 97/23/EC Certified, Merkblatt AD 2000 W2 Certified |
| Production Process | M24-M100: hot forging , M2-M24: Cold Froging, for custom-made connecting element machining and CNC |
| Types | Bolts, Nuts, Stud Bolts, Washers, Threaded Rod, Anchor Fasteners, Eye Bolt, Stud, Cotter Pin, Socket Screw, Fine Fasteners & Spares, Foundation Fasteners, Hexagon Castle Nuts, Hexagon Domed Cap Bolts, Hexagon Thin Nuts etc. |
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Cupro Nickel 70 / 30 Bolts
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Cu Ni 70 / 30 Nuts
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Copper Nickel 70 / 30 Washers
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Cupro Nickel 70 / 30 Screw
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Cu-Ni 70 / 30 Stud Bolt
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CuNi 70 / 30 U Bolts
- Copper Nickel 70 / 30 Fasteners Price List
- CuNi 70 / 30 Nut Bolt
- UNS C71500 Fasteners
- Copper Nickel 70 / 30 Fasteners
- 70 / 30 Cupro Nickel Fastener
- Cu Ni 70 / 30 Fasteners
- Cupro Nickel 70 / 30 Hex Head Bolt
- Cupro Nickel 70 / 30 U Bolts
- Cu Ni 70 / 30 Anchor Fasteners
- Cu-Ni 70 / 30 Washers
- Copper Nickel 70 / 30 Eye Bolts
- Copper Nickel 70 / 30 Carriage Bolts
- Cupro Nickel 70 / 30 Industrial Fasteners
- CuNi 70-30 Socket Set Screw
- Cupro Nickel 70 / 30 Stud Bolts
- Cupro Nickel 70-30 Heavy Hex Bolts
- 70 / 30 Cupro Nickel Washer
- CuNi 70 / 30 Square Nuts
- Cupro Nickel 70 / 30 Fasteners
- ASME SB151 Cupro Nickel 70 / 30 Fasteners
- 70 / 30 Cupro Nickel Dome Washer
- Cupro Nickel 70 / 30 Allen Cap Screw
- 70 / 30 Cupro Nickel Structural Bolts
- Cupro Nickel 70 / 30 Threaded Rod
- ASTM B151 Cupro Nickel 70 / 30 Spring Washer
- CuNi 70 / 30 Bolts and Nuts
- Cu-Ni 70 / 30 Self Locking Nuts
- CuNi 70-30 Heavy Hex Nuts
- UNS C71500 Fasteners
- CuNi 70-30 Coupling Nuts
- Cupro Nickel 70 / 30 Wing Nuts
- Cupro Nickel 2.0882 Fastener
- Thick Cupro Nickel 70 / 30 Washers
- Cupro Nickel 70-30 Ogee Washers
- Copper Nickel 70 / 30 Flat Washers
- DSS C71500 Acorn Nuts
- CuNi 70 / 30 Plain Washer
- Cupro Nickel 70-30 Fasteners
- 70 / 30 Cupro Nickel Fasteners
- Copper Nickel 70 / 30 Studs
- DSS C71500 Self Tapping Screw
- Cupro Nickel 2.0882 Fasteners
| STANDARD | UNS | WERKSTOFF NR. |
| Cupro Nickel 70/30 | C71500 | 2.0882 |
| Cu-Ni 70/30 | Cu | Pb | Mn | Fe | Zn | Ni |
| 88.6 min | 0.05 max | 1.0 max | 1.8 max | 1 max | 9-11 max |
| Density | Melting Point | Yield Strength (0.2%Offset) | Tensile Strength | Elongation |
| 8.1 g/cm3 | 1443 °C (2430 °F) | Psi – 35,000, MPa – 241 | Psi -80,000, MPa -551 | 30 % |
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