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ASTM B111 UNS C68700 Aluminum Brass Seamless Tube U Bend Tube For Condenser

ASTM B111 UNS C68700 Aluminum Brass Seamless Tube U Bend Tube For Condenser

  • ASTM B111 UNS C68700 Aluminum Brass Seamless Tube U Bend Tube For Condenser
  • ASTM B111 UNS C68700 Aluminum Brass Seamless Tube U Bend Tube For Condenser
  • ASTM B111 UNS C68700 Aluminum Brass Seamless Tube U Bend Tube For Condenser
  • ASTM B111 UNS C68700 Aluminum Brass Seamless Tube U Bend Tube For Condenser
ASTM B111 UNS C68700 Aluminum Brass Seamless Tube U Bend Tube For Condenser
Product Details:
Place of Origin: CHINA
Brand Name: YUHONG
Certification: ABS, BV, DNV-GL , PED, TUV, LR, KR, NK, CCS.
Model Number: ASTM B111 UNS C68700 Aluminum Brass Seamless U Bend Tube
Payment & Shipping Terms:
Minimum Order Quantity: 1000KGS
Packaging Details: Ply-wooden Case /Iron Case
Delivery Time: 7 DAYS
Payment Terms: L/C,T/T
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Detailed Product Description
Product Name: U Bend Tube Standard: ASTM B111 / ASME SB111
Material: UNS C68700 (CW702R) Temper: O61 Annealed
OD: 1/4" , 3/8", 1/2", 5/8", 3/4", 1", 1.1/4", Etc. Thickness: BWG 10,12,14,16,18,20,22
Radius: Accroding To Client's Request Type: Seamless U Bend Tube
Application: Condenser, Heat-exchangers,Boiler,Cooler,etc.
High Light:

UNS C68700 U Bend Tube

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Condenser U Bend Tube

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B111 U Bend Tube

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. Their inherent resistance to seawater, brackish water, and non-oxidizing mineral acids makes them ideal for marine and offshore applications. The high thermal conductivity of C68700 tubes enables efficient heat transfer, while their malleability allows for easy shaping and forming.

 

 

Standard Grade ASTM B111 C68700 EN 12451 CuZn20Al2As DIN 17660/1785 CuZn20Al2 BS 2871 CZ 110 JIS H3300 C6870 GB/T 8890 HAL 77-2
Cu 76.0-79.0 76.0-79.0 76.0-79.0 76.0-78.0 76.0-79.0 76.0-79.0
Al 1.8-2.5 1.8-2.3 1.8-2.3 1.8-2.3 1.8-2.5 1.8-2.5
Fe 0.06 max 0.07 max 0.07 max 0.06 max 0.06 max 0.06 max
Pb 0.07 max 0.05 max 0.07 max 0.07 max 0.07 max 0.03 max
Zn Bal. Bal. Bal. Bal. Bal. Bal.
As 0.02-0.10 0.02-0.06 0.02-0.035 0.02-0.06 0.02-0.06 0.03-0.06
P - 0.01 max 0.01 max - - 0.02 max
Mn - 0.1 max 0.1 max - - -
Total Impurities - 0.3 max 0.1 max 0.3 max - 0.3 max
Condition O61 R390 F39 M O M
- R340 F34 TA - Y2
- - - O - -
Yield Strength N/mm2 125 min 150 min 150-230 - - -
- 120 min 120-180 - - -
- - - - - -
Tensile trength N/mm2 345 min. 390 min - - 373 min 370min
- 340 min - - - 350 min
- - - - - -
Elongation (%) - 45 min 45 min - 40 min 40 min
- 55 min 55 min - - 50 min
- - - - - -
Hardness Hv5 - - - 150 min - -
- - - 85-110 - -
- - - 75 max - -
 

 

Chemical requirements

Copper or copper alloy UNS No. Copper TIN Al Ni incl Co Pb max Fe max Zn max Mn max As Sb P max Cr Other
C44300 70.0-73.0 0.9-1.2     0.07 0.06 remainder   0.02-0.06        
C44400 70.0-73.0 0.9-1.2     0.07 0.06 remainder     0.02-0.10      
C44500 70.0-73.0 0.9-1.2     0.07 0.06 remainder       0.02-0.10    
C60800 remainder   5.0-6.5   0.1 0.1     0.02-0.35        
C61300 remainder 0.20-0.50 6.0-7.5 0.15 max 0.01 2.0-3.0 0.1 0.2     0.015    
C61400 remainder   6.0-8.0   0.01 1.5-3.5 0.2 1     0.015    
C68700 76.0-79.0   1.8-2.5   0.07 0.06 remainder   0.02-0.06        
C70400 remainder     4.8-6.2 0.05 1.3-1.7 1 0.30-0.80          
C70600 remainder     9.0-11.0 0.05 1.0-1.8 1 1          
C70620 86.5 min     9.0-11.0 0.02 1.0-1.8 0.5 1     0.02   C.05 max S.02 max
C71000 remainder     19.0-23.0 0.05 0.50-1.0 1 1          
C71500 remainder     29.0-33.0 0.05 0.4-1.0 1 1          
C71520 65.0 min     29.0-33.0 0.02 0.4-1.0 0.5 1     0.02   C.05 max S.02 max
C71640 remainder     29.0-32.0 0.05 1.7-2.3 1 1.5-2.5         C.06 max S.03 max
C72200 remainder     15.0-18.0 0.05 0.50-1.0 1 1       0.30-0.70 Si.03 max Ti.03 max
 

 

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.

 

ASTM B111 UNS C68700 Aluminum Brass Seamless Tube U Bend Tube For Condenser 0

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