The ASTM B111 C70600-O61 Copper Nickel Low Finned Tube is a specialized heat exchanger tube made from a 90/10 copper-nickel alloy (90% copper and 10% nickel). This material is widely recognized for its excellent resistance to corrosion, particularly in marine and seawater environments, as well as its superior thermal and mechanical properties.

• Material Composition (C70600):
  • Copper: 88.7% - 91.2%
  • Nickel: 9.0% - 11.0%
  • Iron: 1.0% - 1.8%
  • Manganese: 1.0% max
  • Other trace elements within ASTM specifications
• Condition: O61 - Annealed condition providing excellent workability, ductility, and corrosion resistance
• Low Finned Tube Design: Increases surface area for enhanced heat transfer efficiency, ideal for compact heat exchangers
• Corrosion Resistance: Exceptional resistance to seawater corrosion, biofouling, and stress corrosion cracking
• Thermal Conductivity: Excellent heat transfer capabilities for heat exchangers, condensers, and cooling systems
• Mechanical Properties:
  • Tensile Strength: 275 MPa (minimum)
  • Yield Strength: 105 MPa (minimum)
  • Elongation: 40% (minimum)

• Marine Industry: Heat exchangers, condensers, and seawater cooling systems
• Power Plants: Steam condensers and boiler feedwater heaters
• Chemical Processing: Equipment exposed to corrosive environments
• Oil & Gas: Offshore platforms and desalination plants