Name: ASTM B111 C71640 Seamless Copper-Nickel Tube - CuNi30Fe Alloy for Marine Condensers & Heat Exchangers
Brand: Yuhong Group Co.,Ltd
SKU: ASTM B111 C71640
Price: 1000000.00 USD
Availability: InStock

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

Product Details:

Place of Origin:	CHINA
Brand Name:	YUHONG
Certification:	ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008
Model Number:	ASTM B111 C71640

Payment & Shipping Terms:

Minimum Order Quantity:	500KGS
Price:	Negotiable
Packaging Details:	Ply-wooden Case /Iron Case
Delivery Time:	15-20 Days
Payment Terms:	L/C, T/T
Supply Ability:	800 Tons/ Month

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Detailed Product Description

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)
Highlight:	ASTM B111 seamless copper-nickel tube , CuNi30Fe alloy marine condenser tube , heat exchanger copper alloy tube

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.