Neil Metals, based in Kolkata, India, has earned a solid reputation as a reliable manufacturer and supplier of Copper Nickel 70/30 Forgings, known for their outstanding quality and performance in both marine and industrial settings. These forgings are celebrated for their remarkable resistance to corrosion and seawater erosion, and they’re meticulously crafted to meet international standards and withstand demanding service conditions. Neil Metals provides precision-engineered Copper Nickel 70/30 forgings in a variety of shapes and sizes, customized to fit client needs. Catering to industries such as shipbuilding, offshore oil and gas, chemical processing, and power generation, Neil Metals is dedicated to timely deliveries, technical excellence, and durable, corrosion-resistant metal solutions.
Copper Nickel 70/30 Forgings consist of about 70% copper and 30% nickel, with small amounts of iron (0.4–1.0%) and manganese (up to 1.0%) added to boost strength and corrosion resistance. These forgings excel in resisting biofouling and saltwater corrosion. In terms of mechanical properties, they offer a tensile strength of around 500–600 MPa, yield strength of 200–260 MPa, and elongation ranging from 25–35%. The alloy retains good mechanical properties even at elevated temperatures, making it perfect for marine applications, heat exchangers, and pressure systems that face extreme environmental conditions.
| Standard | DIN, ASTM, BS and all International Standards |
|---|---|
| Flat bar blocks | up to 27″ width and 15,000 lbs |
| Cylinders and sleeves | up to 50″ maximum O.D. and 65″ maximum length |
| Discs and hubs | up to 50″ diameter and 20,000 lbs |
| Rolled, hand forged or mandrel forged rings | up to 84″ maximum O.D. and 40″ maximum length |
| Rounds, shafts and step shafts | up to 144″ maximum length and 20,000 lbs |
| Forging Types | Impression Die Forging, Open Die Forging, Seamless Rolled Forging, Hot Forging, Cold Forging, Open die hammer forging, Impression die drop forging, Closed Die Forging, Press Forging, Upset Forging, Compression Forging, Swaging, Rotary Forging, Roll forging. |
| Grade | Cu | Mn | Pb | Ni | Fe | Zn |
| Cu-Ni 70-30 | 65.0 min | 1 max | .05 max | 29-33 | 0.4-1.0 | 1 max |
| Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| Copper Nickel 70-30 | 0.323 lb/in3 at 68 F | 2260 F | 50000 psi | 20000 psi | 30 % |
| STANDARD | WERKSTOFF NR. | UNS |
| Copper Nickel 70/30 | 2.0882 | C71500 |
The durability of Copper Nickel 70/30 forgings is ensured by excellent corrosion resistance, high tensile strength, superior weldability, resistance to seawater, anti-biofouling properties, and consistent alloy composition for enhanced performance.
Copper Nickel 70/30 forgings offer superior strength, enhanced corrosion resistance, improved material utilization, reduced waste, better grain structure, and higher durability compared to machining, making them ideal for demanding applications.
Compatible welding processes for Copper Nickel 70/30 forgings include TIG (GTAW), MIG (GMAW), and shielded metal arc welding (SMAW), ensuring strong joints, excellent corrosion resistance, and minimal thermal distortion.
Copper Nickel 70/30 Forgings are extensively utilized in scenarios where high corrosion resistance, particularly against seawater, is essential. In the marine sector, they’re found in pump bodies, valve components, propeller shafts, and seawater piping systems. Offshore oil and gas platforms rely on them for heat exchangers, hydraulic lines, and condensers. Power generation facilities use these forgings in cooling systems and condenser tubes. Moreover, they play a role in desalination plants, naval defense systems, and chemical processing units. Their exceptional thermal stability, resistance to biofouling, and mechanical strength make them ideal for long-term use in harsh environments.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Neil Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Kolkata, India
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