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ASTM B111 UNS C68700 Seamless Copper Alloy U bend tube Heat Exchanger Tube

ASTM B111 UNS C68700 Seamless Copper Alloy U bend tube Heat Exchanger Tube

  • ASTM B111 UNS C68700 Seamless Copper Alloy U bend tube Heat Exchanger Tube
  • ASTM B111 UNS C68700 Seamless Copper Alloy U bend tube Heat Exchanger Tube
  • ASTM B111 UNS C68700 Seamless Copper Alloy U bend tube Heat Exchanger Tube
  • ASTM B111 UNS C68700 Seamless Copper Alloy U bend tube Heat Exchanger Tube
ASTM B111 UNS C68700 Seamless Copper Alloy U bend tube Heat Exchanger Tube
Product Details:
Place of Origin: CHINA
Brand Name: YUHONG
Certification: ABS, BV, DNV-GL , PED, TUV, LR, KR, NK, CCS.
Model Number: ASTM B111, ASTM B395, ASTM B187, ASTM B152. ASTM B111 C68700
Payment & Shipping Terms:
Minimum Order Quantity: 500KGS
Packaging Details: Ply-wooden Case /Iron Case/ Bundle with plastic Cap
Delivery Time: 7 DAYS
Payment Terms: L/C,T/T
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Detailed Product Description
Product Name: Copper Alloy U Bend Tube Standard: ASTM B111 / ASME SB111
Material: UNS C68700 (CW702R) Type: Seamless
Shape: U Bend Tube Surface: Polished
Finish: Cold Drawn Application: Condenser, Heat-exchangers,boiler,cooler,etc.
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ASTM B111 C68700 Aluminum Brass Seamless U Bend Tube for cooling and heating

 

 

ASTM B111 C68700 is a specification for seamless copper alloy U bend tubes, specifically made from aluminum brass. These tubes are commonly used in heat exchangers and condensers due to their excellent corrosion resistance, high thermal conductivity, and good strength. The U bend shape allows for easy installation and routing of the tubes in heat exchange systems. 

 

 

C68700 Aluminum Brass U Bend Tubes are a popular choice for heat exchangers due to several reasons:

  1. Corrosion resistance: The tubes have excellent corrosion resistance properties, which make them suitable for use in marine environments and other corrosive applications.

  2. Thermal conductivity: C68700 tubes have high thermal conductivity, which allows for efficient heat transfer.

  3. Formability: These tubes are easily formed into U bend shapes, which makes them easy to install and route in heat exchange systems.

  4. Strength: C68700 tubes have good strength properties, which make them suitable for use in high-pressure applications.

  5. Cost-effective: These tubes are cost-effective compared to other materials such as stainless steel or titanium, making them a popular choice for heat exchanger applications.

 

Specification

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
 

 

Mechanical Properties

Form Temper Temper Code Tensile Strength (ksi) YS-0.5% Ext (ksi) Elongation (%) Rockwell B scale Rockwell F scale Section Size (in) Cold Work (%)
Flat Products As Hot Rolled M20 55 Typ 20 Typ 45 Typ 35 Typ - 1  
Rod 1/2 Hard H02 75 Typ 70 Typ 15 Typ 80 Typ - 1 20
Tube Nominal Grain Size 0.025 mm OS025 60 Typ 25 Typ 45 Typ 45 Typ 80 Typ - -
Nominal Grain Size 0.035 mm OS035 54 Typ - 45 Typ 36 Typ 77 Typ - -
 

 

Applications

ASTM B111 UNS C68700 Seamless Copper Alloy U bend tubes are commonly used in various applications such as:

  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 Seamless Copper Alloy U bend tube Heat Exchanger Tube 0

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