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ASTM B111 C71640 Seamless Copper-Nickel Tube - CuNi30Fe Alloy for Marine Condensers & Heat Exchangers

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ASTM B111 C71640 Seamless Copper-Nickel Tube - CuNi30Fe Alloy for Marine Condensers & Heat Exchangers

Brand Name : YUHONG

Model Number : ASTM B111 C71640

Certification : ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008

Place of Origin : CHINA

MOQ : 500KGS

Price : Negotiable

Payment Terms : L/C, T/T

Supply Ability : 800 Tons/ Month

Delivery Time : 15-20 Days

Packaging Details : Ply-wooden Case /Iron Case

Standard : ASTM B111 / ASME SB111

Material Grade : C71640 (UNS C71640)

Product Type : Seamless Condenser Tube

Primary Application : Surface Condensers, Evaporators, Heat Exchangers

Size Range : Customized

Material : Copper-Nickel-Iron-Manganese Alloy (CuNi30Fe)

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ASTM B111 C71640 Seamless Copper-Nickel Tube - CuNi30Fe Alloy for Marine Condensers & Heat Exchangers

 

YUHONG Group, with over 35 years of industrial expertise​ and a global supply network serving 85 countries, specializes in high-performance non-ferrous alloy tubing solutions. Our ASTM B111 C71640 Copper-Nickel Seamless Tubes​ are manufactured to meet rigorous international standards for critical applications in marine condensers, heat exchangers, and evaporators. We ensure full traceability, stringent quality control, and reliable performance for demanding service conditions worldwide.

Chemical Composition Requirements (C71640)

 

Element Composition (%)
Copper (Cu) + Silver (Ag) Remainder
Nickel (Ni) + Cobalt (Co) 29.0 - 32.0
Iron (Fe) 1.7 - 2.3
Manganese (Mn) 1.5 - 2.5
Carbon (C), max 0.06
Sulfur (S), max 0.03
Mechanical Properties (C71640)​
 
Temper Tensile Strength, min Yield Strength, min (0.5% extension)
O61 (Annealed) 63 ksi (435 MPa) 25 ksi (170 MPa)
HR50 (Drawn & Stress-Relieved) 81 ksi (560 MPa) 58 ksi (400 MPa)

Standard Test Requirements

 

Test Type Requirement
Expansion Test 30% of outside diameter (per Table 4)
Hydrostatic Test Maximum pressure 1000 psi (7 MPa) unless specified
Eddy Current Test Mandatory for quality assurance
Grain Size (Annealed) 0.010-0.045 mm

Key Product Advantages​

 

  • High Strength in Marine Service:​ The CuNi30Fe composition (C71640) provides superior mechanical strength compared to standard copper-nickel alloys, making it ideal for high-pressure condenser and heat exchanger applications.
  • Excellent Corrosion Resistance:​ Demonstrates outstanding resistance to seawater corrosion, biofouling, and erosion, ensuring long-term reliability in marine environments.
  • Good Fabricability:​ Available in annealed (O61) or drawn/stress-relieved (HR50) tempers, offering flexibility for various forming and welding requirements in piping systems.
  • Full Compliance with International Standards:​ Manufactured in strict accordance with ASTM B111 requirements, ensuring consistent quality and dimensional accuracy.
  • Proven Performance:​ Widely used in power generation, marine engineering, and offshore applications where reliability under severe conditions is essential.
ASTM B111 C71640 Seamless Copper-Nickel Tube - CuNi30Fe Alloy for Marine Condensers & Heat Exchangers
 

Product Tags:

ASTM B111 seamless copper-nickel tube

      

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