Ronwen Flanges stands out as a premier manufacturer and supplier of Copper Nickel 90/10 flanges, proudly based in Cape Town, South Africa. We focus on creating flange solutions that are not only corrosion-resistant but also built to last, catering to marine, offshore, and industrial needs. Our Cu-Ni 90/10 flanges are celebrated for their outstanding performance in seawater and other harsh environments, making them a top choice for coastal projects and shipbuilding. Each flange is crafted to meet international standards like ASTM B151 and ASME B16.5, ensuring precision machining for accurate dimensions, leak-proof connections, and a long lifespan. At Ronwen Flanges, we prioritize quality, reliability, and customer satisfaction throughout South Africa and beyond.
The composition of Copper Nickel 90/10 flanges includes 90% copper and 10% nickel, often with minor additions of iron and manganese to boost strength and corrosion resistance. This alloy excels in resisting seawater corrosion, biofouling, and stress cracking, even under high-salinity or low-velocity flow conditions. With mechanical properties that feature a tensile strength range of 275–345 MPa and commendable ductility, these flanges are well-suited for welding and high-stress applications. The 90/10 alloy retains its strength and corrosion resistance in both hot and cold environments, making it a dependable option for demanding fluid handling systems in marine and industrial settings.
Dimensions : ANSI/ASME B16.5, B16.48, BS4504, BS 10, EN-1092, DIN, etc.
Standards: ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc.
Specifications : ASTM B564 / ASME SB 564
Size : 1 / 2” to 12″
Class : 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS DIN.
Grade: Copper-Nickel Cu-Ni 90 / 10 (C70600)
Our Cupro Nickel 90 / 10 Flanges conform to NACE MR0175/ISO 15156
| Grade | Cu | Mn | Pb | Ni+Co | Fe | Zn |
| Copper Nickel 90/10 | REM | 1.00 max | 0.05 max | 9 – 11 | 1.0 – 1.8 | 1 max |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 0.323 lb/in3 at 68 F | 0.323 lb/in3 at 68 F | 260 mpa | 105 mpa | 30 % |
Ronwen Flanges, a leading supplier in Cape Town, South Africa, offers an extensive selection of Copper Nickel 90/10 Flanges, including weld neck flanges, slip-on flanges, blind flanges, threaded flanges, and lap joint flanges. Designed for diverse industrial applications, our high-quality inventory and commitment to exceptional service make us a trusted choice for flange products in the region.
| STANDARD | WERKSTOFF NR. | DIN | BS | EN | UNS |
| Copper Nickel 90/10 | 2.0872 | CuNi10Fe1Mn | CN102 | CW352H | N70600 |
Ronwen Flanges’ Copper Nickel 90/10 flanges find extensive use in industries where exceptional corrosion resistance and long-lasting durability are essential. Key sectors include marine engineering, shipbuilding, offshore oil and gas, desalination plants, power generation, and chemical processing.
Yes, we offer custom sizes for Copper Nickel 90/10 Flanges to meet specific project needs. Our team at Ronwen Flanges is committed to providing tailored solutions for all your requirements. For more details, contact us at sales@ronwenflanges.co.za.
We are renowned for delivering products with precise, accurate dimensions. Each product undergoes thorough testing, both destructive and non-destructive, to ensure quality before being shipped to our customers.
Our team is ready to assist you. Contact us for any queries or personalized solutions.
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