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Kunj is a leading supplier and producer of Copper Nickel 90/10 Circles in Delhi, India, offering high-quality products made to last with superior performance in tough conditions. Our Copper Nickel 90/10 circles, which consist of 90% copper and 10% nickel, are well known for their superior corrosion resistance, particularly in seawater and marine environments. Made with precision and conformance to global standards, these circles find their way into numerous industrial uses, such as marine hardware, condensers, and heat exchangers. With emphasis on quality, strength, and reliability, Kunj takes pride in regular supply and customer satisfaction in both domestic and international markets.
Copper Nickel 90/10 alloy consists of about 90% copper, 10% nickel, and traces of iron and manganese for improved corrosion resistance and durability. It possesses a tensile strength of 275–370 MPa, yield strength of approximately 130 MPa, and elongation of up to 40%. The alloy has superior stress corrosion cracking, erosion, and biofouling resistance in seawater environments. It has good weldability and moderate thermal and electrical conductivity and is suitable for conductive and structural applications where stability and corrosion resistance are essential.
| 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 90-10 | 88.6 min | 1.0 max | .05 max | 9-11 max | 1.8 max | 1 max |
| Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| Copper Nickel 90-10 | 0.323 lb/in3 at 68 F | 2260 F | 50000 psi | 20000 psi | 30 % |
| STANDARD | WERKSTOFF NR. | UNS |
| Copper Nickel 90/10 | 2.0872 | C70600 |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
The copper nickel 90/10 circle offers many advantages including particular resistance to seawater corrosion, making it ideal for the marine environment It exhibits excellent resistance to biofouling, and ensures long service under extreme conditions. The alloy also offers strong mechanical properties such as high tensile strength, durability and resistance to stress corrosion cracking. It also has excellent thermal electrical conductivity along with excellent weldability and formability. These features make the Copper Nickel 90/10 Circle desirable for applications such as heat exchangers, desalination plants, and chemical plants.
Copper Nickel 90/10 circles are commonly employed in marine applications as seawater piping, pump parts, and ship structures because they can resist corrosion and biofouling. They find excellent applications as condenser and heat exchanger tubing in power plants and desalination plants. Within the chemical processing industry, these circles are employed in equipment dealing with mildly corrosive or alkaline chemicals. Their anti-microbial and non-sparking characteristics also render them appropriate for offshore platforms, naval ships, and oil refineries. With superior fabrication properties, these circles are wear-resistant, durable, and engineered for high-performance applications.
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