Product Introduction: Heat Exchanger Seamless Copper Alloy / Brass Tubes (ASTM B111 UNS No: C44300)

1. Chemical Composition
   • Copper (Cu + Ag): 70.0 - 73.0%
   • Zinc (Zn): Balance
   • Tin (Sn): 0.9 - 1.2%
   • Iron (Fe): 0.06% max
   • Lead (Pb): 0.07% max
   • Arsenic (As): 0.02 - 0.06%.
2. Mechanical Properties
   • Tensile Strength: Minimum 310 MPa
   • Yield Strength: Minimum 105 MPa
   • Elongation: Typically 30% in 2 inches.
3. Thermal Conductivity
   • C44300 tubes offer excellent thermal conductivity, making them ideal for efficient heat transfer in heat exchangers and condensers.
4. Corrosion Resistance
   • The alloy provides superior resistance to corrosion in various environments, including seawater, freshwater, and brackish water. This makes it suitable for applications in power plants, oil refineries, and HVAC systems.

• Heat Exchangers and Condensers: Used in power plants, refrigeration systems, and HVAC applications.
• Oil and Gas Industry: Utilized in oil coolers, gas pipelines, and offshore platforms.
• Plumbing Systems: Suitable for potable water, hot water, and chilled water distribution due to its antimicrobial properties.
• Marine Applications: Preferred for shipboard systems due to its resistance to seawater corrosion and biofouling.

• Standard: ASTM B111 / ASME SB111.
• Size Range:
  • Outside Diameter (OD): 6 - 50.8 mm
  • Wall Thickness: 0.4 - 3 mm
  • Length: 6000 - 12000 mm.
• Tests: Chemical analysis, tensile testing, expansion test, flattening test, eddy-current testing, and hydrostatic testing.

• Durability: High mechanical strength and corrosion resistance ensure long-term reliability.
• Efficiency: Excellent thermal conductivity enhances the performance of heat exchange systems.
• Versatility: Suitable for a wide range of industrial applications, including marine, oil & gas, and HVAC.