Fasteners are essential to any engineering or construction project, as they hold different components together. The type of fasteners used often depends on the project requirements. One highly sought-after fastener is cupro nickel, known for its excellent resistance to corrosion and impressive durability.

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Cupro-nickel is an alloy composed of copper, nickel, and a small amount of iron, manganese, and other materials. This alloy comes in various grades depending on its nickel and copper content. Common Cupro-Nickel Fasteners include C70600 or 90/10 cupro-nickel and C71500 or 70/30 cupro-nickel. The former has a higher copper content, making it more corrosion-resistant but less durable, while the latter has a higher nickel content, giving it higher strength and toughness.

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Cupro nickel fasteners have extensive applications in marine environments due to their excellent resistance to saltwater corrosion. This feature makes them ideal for oil and gas pipelines, underwater cables, mooring chains, and shipbuilding. This alloy is also popular in power plants, desalination plants, and industrial equipment exposed to brine or acidic corrosion. Cupro nickel fasteners are also suitable for air conditioning and refrigeration systems, as they do not spark or ignite. They are also used in the automotive industry, especially in brake systems requiring friction, wear, and corrosion resistance.

Thanks to their unique properties, cupro-nickel fasteners present various uses in different industries. They join and secure metal plates, pipes and tubes, and other mechanical components. They are also used in pumps, valves, and heat exchangers since they resist fouling due to their non-biofouling properties. Cupro nickel fasteners are also used in marine propellers due to their exceptional resistance to marine organisms, which increases their lifespan and minimizes maintenance costs.

Cupro Nickel Bolts
Cupro Nickel Nuts
Cupro Nickel Washers

One of the primary advantages of cupro-nickel fasteners is their corrosion resistance - the copper and nickel composition provides excellent protection against corrosion and biofouling. Additionally, cupro-nickel fasteners have remarkable ductility, malleability, and toughness, making them easy to work with and capable of withstanding heavy loads.

Cupro nickel fasteners are a valuable component due to their unique properties, including excellent resistance to corrosion, durability, and resistance to biofouling. Their ductility, malleability, and toughness make them easy to work with and ideal for various applications like marine environments, refrigeration systems, and power plants.

Cupro Nickel Bolts and Nuts Specification

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
  • DIN : DIN 934, DIN 931, DIN 970, DIN 933
  • UTS : UNEF, NPT, UNC, UNS, UNF, NPTF
  • ISO : JIS standards, ISO 4033, ISO 4032,
  • ANSI – American National Standards Institute
  • ASME B18.5
  • ANSI B 28.2.4 1M
  • as per defined in ASME B16.5 standard Stud Bolt length
  • ANSI B 18.2.4 2M
  • as per defined in ASME B18.2.2 Hex nuts
Form Hex, Threading, Square, Round as per Gauge Etc.
Raw materials Source JSPL, Mukund Steel, Tata Steel, Dhamm Steel, Usha Martin,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.

Cupro Nickel Fasteners Price List

Price List of Cupro Nickel Fasteners Cu Ni Fasteners Price in India (INR) Copper Nickel Fasteners Price in USD Cupro Nickel Fasteners Price in UAE (Dirham)
Cu Ni Nut Bolt Price Per Kg ₹ 1,777 $ 25.00 USD 67.10 AED
CuNi Screws Price ₹ 2,335 $ 27.72 USD 96.45 AED
M16 5/8inch Copper Nickel Hex Head Bolt Price List ₹ 2,544 $ 25.21 USD 167.27 AED
Cu-Ni Nut Bolt Price List ₹ 1,477 $ 37.35 USD 89.73 AED
Price of Cupro Nickel Stud Bolt ₹ 3,547 $ 36.40 USD 154.71 AED
M8 Cu Ni Hex Flange Nut Price ₹ 1,648 $ 13.19 USD 46.76 AED
Copper Nickel Hex Bolt Price List ₹ 6,347 $ 194.32 USD 475.50 AED
Cupro Nickel Fasteners Price List ₹ 2,536 $ 68.33 USD 156.17 AED
Copper Nickel Bolts Price List ₹ 1,229 $ 37.45 USD 58.27 AED

Copper Nickel Fasteners Technical Data Sheet

Cupro Nickel Manufacturing Process

manufacturing process
manufacturing process
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manufacturing process

Common Types Of Cupro Nickel Fasteners

Bolts

Cupro Nickel Bolts

Nuts

Cupro Nickel Nuts

Screws

Cu Ni Steel Screw

Washers

Copper Nickel Washer

Stud Bolts

CuNi Stud Bolts

Anchor Bolts

Cupro Nickel Anchor Bolts

Other Type Cu-Ni Fasteners

  • Cupro Nickel Fasteners
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Cu-Ni Fasteners Industrial Application