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Strategically located in the industrial heart of Amman, Jordan, Nizar Sheetsandplates has built a reputation as a trusted partner for high-performance marine alloys. We take pride in offering the exceptional Copper Nickel 7030 Circle, a material specifically engineered to withstand the relentless challenges of seawater environments. Our clients, from shipbuilders to desalination plant engineers, rely on our consistent quality and deep expertise, knowing they are receiving a product that promises longevity and unwavering reliability in the most demanding applications.
At its core, this alloy is a robust blend of approximately 70% copper and 30% nickel, enhanced with small but crucial additions of iron and manganese. This specific composition grants the circle remarkable mechanical strength and excellent ductility, allowing it to be formed into complex components without compromising its integrity. Perhaps its most celebrated trait is its outstanding resistance to corrosion, especially against seawater, biofouling, and the damaging effects of stress corrosion cracking, ensuring a long and dependable service life.
| 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 uses for these durable circles are extensive and critical, primarily forming essential parts like pipe flanges, custom vessel heads, and sophisticated valve components within shipbuilding and offshore platforms. They are also indispensable in the construction of heat exchangers and condensers for coastal power stations and desalination facilities, where saltwater is the primary coolant. Beyond marine engineering, this material finds important roles in chemical processing plants, handling caustic substances where its non-sparking properties and reliability are invaluable for safe operation.
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