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For over fifty years, the team at Will Sheetsandplates in Hamilton has been the trusted local source for industrial metals. We take pride in supplying high-performance materials like the Copper Nickel 7030 Circle, delivering the quality and consistency that New Zealand’s engineering and marine sectors depend on. Our commitment isn’t just about the product; it’s about providing reliable, hands-on support from our experienced staff, ensuring you get the right solution for your specific project needs.
This particular alloy is a robust blend of 70% copper and 30% nickel, often with small additions of iron and manganese for enhanced performance. This composition gives the material excellent mechanical strength and outstanding corrosion resistance, especially in challenging seawater environments. It maintains its toughness and ductility across a wide range of temperatures, making it easy to fabricate into complex components without losing its integrity under pressure.
| Standard | ASTM B122, ASME SB122 |
| Dimensions | ASTM, ASME and API |
| Standard | JIS, AISI, ASTM, GB, DIN, EN, etc. |
| Thickness | 1 Mm To 100 mm. |
| Diameter | Upto 2000 Mm. |
| Circle Diameter | 3″ DIA up to 38″ DIA 1500 lbs max. |
| Circles Form | Cold Rolled, Small Flat, Industrial, Proof Machined, Perforated, Forged Steel, Hot Rolled Circle. |
| 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 |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Copper nickel 70/30 circle provide exceptional corrosion resistance, especially in marine and saltwater environments, due to their high nickel content. They combine excellent mechanical strength with ductility, making them suitable for demanding applications such as shipbuilding, heat exchangers, offshore platforms etc. Their resistance to biofouling minimizes and extends maintenance requirements service lifetime. Being excellent heaters, they ensure smooth thermal conductivity in industrial systems. Furthermore, these cylinders are easily manufactured and welded, making them versatile for various applications such as desalination, power generation and chemical processing, resulting in long-term reliability and reduced costs.
The unique properties of the Copper Nickel 7030 Circle make it indispensable in marine engineering. You’ll commonly find it crafted into critical parts like pump components, valves, and condenser plates aboard ships and in offshore platforms. Its reliability also extends to desalination plants and power generation facilities, where it handles corrosive fluids with ease. Essentially, wherever there’s a need for long-lasting performance against saltwater corrosion, this alloy is the go-to choice for durable and safe operation.
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