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Ramu Fasteners is a reliable manufacturer and supplier of Copper Nickel 70/30 Bolts based in Hyderabad, providing top-notch fastening solutions tailored for marine and highly corrosive settings. With state-of-the-art manufacturing facilities and rigorous quality control measures, the company guarantees exceptional dimensional accuracy, strength, and durability. These Copper Nickel 70/30 Bolts are specifically crafted to resist seawater corrosion, biofouling, and erosion, making them perfect for critical applications in coastal and offshore industries. Offered in a variety of sizes, thread types, and finishes, these bolts ensure secure fastening and long-lasting reliability in demanding industrial and marine environments.
Copper Nickel 70/30 Bolts are crafted from an alloy that consists of about 70% copper and 30% nickel, along with trace amounts of iron and manganese. This unique blend offers outstanding corrosion resistance in seawater and other harsh environments, while also providing good tensile strength, ductility, and toughness. The alloy effectively resists stress corrosion cracking, erosion, and biofouling, making it exceptionally durable for marine applications. These bolts maintain their mechanical integrity even under fluctuating temperatures and in wet or saline conditions, ensuring dependable performance in critical fastening assemblies.
| Grade | Cu | Mn | Pb | Ni | Fe | Zn |
|---|---|---|---|---|---|---|
| Copper Nickel | 65.0 min | 1 max | .05 max | 29-33 | 0.4-1.0 | 1 max |
| 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 |
| Grade | Copper 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 | Bolts |
| Types | Hex Bolts, Flange Bolts, Hex Head Bolts, Lag Bolts, Square Bolts, Eye Bolts, U Bolts, T Bolts, Counter sunk Bolts |
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 70/30 Bolts are widely used in marine applications such as in ships and offshore platforms because of the material’s ability to withstand corrosion in marine environment. They are useful in the desalination plants where the resistance to chloride corrosion is very important. Also, these bolts are used in chemical processing industries, heat exchangers, and other industries where long-term performance under severe conditions is desired.
Copper Nickel 70/30 Bolts find extensive use in marine, offshore, and coastal applications where seawater corrosion resistance is essential. They’re commonly utilized in shipbuilding, offshore platforms, desalination plants, seawater piping systems, and marine hardware assemblies. Additionally, these bolts are employed in pumps, heat exchangers, and structural components that are exposed to high humidity and saline conditions. Their impressive strength, corrosion resistance, and long service life make them the go-to choice for critical fastening applications in challenging environments.
Ramu Fasteners is a leading manufacturer and supplier of high-quality fasteners in Hyderabad, India, with over 8 years of experience serving global industries.
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