ASTM B111 UNS C68700 Aluminum Brass Tube Seamless U Bend Heat Exchanger Tube

Product Specification

ASTM B111 C68700 Seamless Aluminum Brass U Bend Tube Condenser Tube

UNS C68700 tubes are a type of aluminum brass alloy known for their exceptional corrosion resistance, thermal conductivity, and malleability. Comprising primarily of copper with aluminum, iron, manganese, and other trace elements, these tubes find widespread usage in various industrial applications. The use of copper-nickel alloys in marine applications is advantageous as they do not leach harmful substances into the water, making them eco-friendly in sensitive. The high thermal conductivity of C68700 tubes enables efficient heat transfer, while their malleability allows for easy shaping and forming. Their inherent resistance to seawater, brackish water, and non-oxidizing mineral acids makes them ideal for marine and offshore applications.

ASTM B111 UNS C68700 Seamless Aluminum Brass Chemical Composition and Mechanical Properties

Fabrication of ASTM B111 C68700 Aluminum Brass Seamless Tube

• Welding: C68700 can be welded using conventional welding methods, but care must be taken to avoid changes in properties at the weld joint.
• Bending: The alloy can be formed into U-bends without significant cracking or deformation when proper techniques are applied.
• Finishing: It can be surface-treated to improve aesthetics and further enhance corrosion resistance.

The advantages of UNS C68700 Aluminum Brass Seamless Tube

1. Corrosion Resistance: UNS C68700 exhibits excellent corrosion resistance, particularly in marine environments or where exposure to seawater is a concern. This makes it a popular choice for U bend tubes in marine heat exchangers.

2. Enhanced Heat Transfer: The addition of aluminum to the copper-nickel alloy improves the heat transfer properties of UNS C68700, making it an efficient choice for heat exchanger applications where thermal conductivity is critical.

3. Malleability: UNS C68700 is malleable and easy to form, allowing for the manufacture of complex U bend tube shapes without compromising the material's integrity. This flexibility in forming ensures that the tubes can be tailored to fit specific design requirements.

4. Pressure Resistance: The alloy's composition gives UNS C68700 good mechanical strength and resistance to high-pressure environments, making it suitable for applications where the U bend tubes are subjected to significant internal pressures.

5. Antifouling Properties: Aluminum Brass exhibits natural antifouling properties, reducing the build-up of deposits and enhancing the overall efficiency of heat transfer processes within the U bend tubes.

6. Cost-Effectiveness: Despite its beneficial properties, UNS C68700 is often cost-effective compared to other high-performance materials, offering a balance between quality and affordability for heat exchanger applications.

Applications

1. Heat exchangers: These tubes are used in heat exchangers for transferring heat from one fluid to another.

2. Condensers: The excellent corrosion resistance and high thermal conductivity of these tubes make them suitable for use in condensers.

3. Power plants: These tubes find their application in power plants for cooling systems.

4. Marine industry: The tubes are used in seawater piping systems due to their excellent resistance to corrosion.

5. HVAC systems: ASTM B111 UNS C68700 Aluminum Brass U Bend Tubes are used in heating, ventilation, and air conditioning (HVAC) systems for their thermal conductivity properties.

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