Copper Nickel 70/30 Fasteners Manufacturer and Supplier in Dubai, UAE
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Majid Fasteners is a leading manufacturer and supplier of high-quality Copper Nickel 70/30 fasteners in Dubai, UAE, serving diverse industries with precision-engineered solutions. Known for reliability, durability, and strict adherence to international standards, our Cu-Ni 70/30 fasteners offer exceptional corrosion resistance, especially in marine and offshore environments. With advanced manufacturing facilities and a strong commitment to customer satisfaction, we provide a wide range of products including bolts, nuts, washers, and custom fasteners. Majid Fasteners ensures timely delivery, competitive pricing, and superior performance, making us a trusted partner for projects across the UAE and global markets.
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What is Copper Nickel 70/30 Fasteners?
Copper Nickel 70/30 fasteners are composed of approximately 70% copper and 30% nickel, with small additions of iron and manganese to enhance strength and corrosion resistance. This alloy offers excellent resistance to seawater, stress corrosion, and biofouling, making it ideal for marine applications. Mechanically, Cu-Ni 70/30 fasteners provide good tensile strength, high ductility, and reliable toughness even at low temperatures. Their stable structure ensures long-term performance under high-pressure and high-temperature conditions, making them a preferred choice for offshore, desalination, and heat-exchanger systems.
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Copper Nickel 70/30 Fasteners Specification
| Grade | Cupro Nickel |
| Specifications | ASTM / ASME SB 151, SB 152 |
| Standards | DIN, ASTM, BS and all International Standards |
| Length | UPTO 5 METERS |
| Size | M4 To M100 | Custom Sizes |
| Form | Nuts, Bolts, Washers, Screw |
| Types | Hex Bolts, Flange Bolts, Hex Head Bolts, Lag Bolts, Square Bolts, Eye Bolts, U Bolts, T Bolts, Counter sunk Bolts, Hex Head Nut, Eye Nut, Dome Nut, Coupling Nut, Square Nut, Acorn Nut, Hex Head Cap Screws, Socket Set Screws, Anchor Screws, Socket Head Screws, Concrete Screws, Shoulder Screws, Threaded Screws, Machine Screws, Machine Washers, Flat Washer, Star Washers, Sealing Washer, Lock Washer etc. |
Copper Nickel 70/30 Fasteners Chemical Composition
| Grade | Cu | Mn | Pb | Ni | Fe | Zn |
|---|---|---|---|---|---|---|
| Copper Nickel | 65.0 min | 1 max | .05 max | 29-33 | 0.4-1.0 | 1 max |
Copper Nickel 70/30 Fasteners Mechanical Properties
| Properties | Metric | Imperial |
|---|---|---|
| Tensile strength, ultimate | 372-517 MPa | 54000-75000 psi |
| Tensile strength, yield (depending on temper) | 88.0-483 MPa | 12800-70100 psi |
| Elongation at break (in 381 mm) | 45.0% | 45.0% |
| Charpy impact | 107 J | 78.9 ft-lb |
| Machinability (UNS C36000 (free-cutting brass) = 100%) | 20% | 20% |
| Shear modulus | 57.0 GPa | 8270 ksi |
| Poisson’s ratio | 0.34 | 0.34 |
| Elastic modulus | 150 GPa | 21800 ksi |
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Copper Nickel 70/30 Fasteners Types
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Copper Nickel 70/30 Fasteners Uses
Copper Nickel 70/30 fasteners are widely used in industries where excellent corrosion resistance and durability are essential. Their superior performance in seawater environments makes them ideal for marine applications, including shipbuilding, offshore platforms, and seawater piping systems. They are also commonly used in desalination plants, heat exchangers, power generation facilities, and cooling systems due to their resistance to biofouling and stress corrosion cracking. Additionally, Cu-Ni 70/30 fasteners are preferred in chemical processing, oil and gas, and HVAC systems, where reliability under high temperatures and harsh operating conditions is crucial.
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