B111 C71640 Copper Nickel Alloy 70/30 Enhanced Heat Transfer Condenser Tube

ASTM B111 C71640 Copper Nickel Alloy 70/30 Enhanced Heat Transfer, Condenser Tube

C71640, also known as Copper-Nickel 70/30 or CuNi 70/30, is a high-performance copper-nickel alloy that consists of approximately 70% copper and 30% nickel, with small amounts of iron and manganese. This alloy is widely used for its excellent corrosion resistance, particularly in marine and seawater environments. Like other copper-nickel alloys, C71640 is known for its durability, resistance to biofouling, and good mechanical properties, making it suitable for a variety of industrial applications.

Chemical Composition:

• Copper (Cu): 66.5 - 70%
• Nickel (Ni): 29 - 33%
• Iron (Fe): 0.4 - 0.8% (for added strength and improved resistance to seawater corrosion)
• Manganese (Mn): 1.0% max
• Other Elements: Trace amounts of sulfur, phosphorus, carbon, and silicon

Key Properties:

• Corrosion Resistance
• High Strength and Durability
• Thermal and Electrical Conductivity
• Erosion and Abrasion Resistance
• Weldability and Formability

Applications:

• Marine Applications:
• Desalination Plants
• Oil and Gas Industry
• Power Generation
• Chemical Processing
• Shipbuilding and Naval Applications
• Automotive and Transportation
• Environmental Control Systems

Yuhong Holding Group has more than 35 years experience for pipeline products, till now we have 3 big joint venture factories, the total production area more than 130000 square meters, and more than 600 workers with 106 production lines give our clients excellent supporting always. The factories already got certificates like : ABS, LR, DNV-GL, BV, KR, CCS, ASME, ISO 9001, ISO14001, ISO18001, ect.

Our factories main products as below :
Factory 1th: Stainless steel seamless tube, Duplex steel seamless tube, Super duplex steel seamless tube, Nickel alloy steel seamless tube;

Factory 2th: Carbon steel seamless tube, Alloy steel seamless tube; Enhanced Heat Tranfer Tube, low fin tube ,U bending workshop;
Factory 3th: High frequency welding fin tube(HFW fin tube, Solid Fin tube, Studded Tube, Serrated Fin tube, Longitudinal welding fin tube), Wound fin tube(L type fin tube, LL type fin tube, KL type fin tube), Embedded G type fin tube , Extruded fin tube, low fin tube, U bend & 180deg. Return;

Yuhong Holding Group also has gained rich experience for project package( products contain:Pipes, Fittings, Flanges, heat exchanger, furnace, fired heater, air cooler, boiler) , YUHONG brand has marked its global presence in more than 85 countries, like, Korea, USA, Canada, Mexico, Colombia, Bolivia, Chile, Argentina, Brazil, Ecuador, Austria, New Zealand, Singapore, Malasyia, Indonesia, Thailand, Vietnam, Ukraine, Turkey,Sauid Arabia, Qatar, U.A.E,Israel,India, UK, France, Italy, Gernmany, Poland, Spain,... We have successfully implemented the orders of Cross Country Pipelines for our valuable customers. In addition, we have also developed a huge network of contacts and strategic alliances with most important manufacturers as stockists around the world.