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Mumbai, India-based The Fasteners Mart is a renowned name in the fastener market recognized for providing high-quality, long-lasting, precision-engineered fastening solutions to customers from diverse business segments. Our Copper Nickel 70/30 bolts are crafted from high-grade Cu-Ni UNS C71500 alloy characterized by high corrosion resistance. Our bolts are also provided with hex, square, and as per customer specifications, making them suitable for marine and industrial purposes.
Copper Nickel 70/30 Bolts consist of about 70% copper and 30% nickel with minor additions of iron and manganese for improved strength and corrosion resistance. They possess superior mechanical properties, such as tensile strength of 310-500 MPa and yield strength of 105-275 MPa, as well as satisfactory ductility and hardness. Physically, they are characterized by a density of 8.95 g/cm³, a melting point of approximately 1170°C, and superior thermal and electrical conductivity. Such properties make them suitable for application in seawater, offshore, and other harsh conditions.
| 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 find extensive applications in marine, offshore, and shipbuilding industries because of their superior resistance to corrosion in seawater and biofouling. They are also applied in heat exchangers, condensers, desalination plants, and power generation systems. They hold up reliably in high-pressure and high-temperature conditions, hence applicable for chemical processing and oil & gas industries. They are also durable and non-sparking, thus perfect to apply in naval equipment, pumps, valves, and underwater piping systems, which provide long life in aggressive and corrosive service conditions.
We guarantee secure and on-time delivery of Copper Nickel 70/30 bolts with protective packaging to avoid transit damage. Each order is meticulously packed with durable materials such as wooden boxes, cartons, or bubble wraps, depending on quantity and size. We provide domestic as well as international shipping with on-time dispatch and tracking assistance for ease of service.
The Fasteners Mart is a leading manufacturer and supplier of high-quality fasteners in Mumbai, India, with over 8 years of experience serving global industries.
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