ASTM B111 C70600 (B10) copper-nickel alloy for Marine Engineering

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Outstanding resistance to seawater corrosion and biofouling: performs reliably in marine environments with minimal maintenance or cleaning.

Superior protection against impingement and erosion: withstands high-velocity flows better than aluminum brass or admiralty brass.

High resistance to stress corrosion cracking (SCC): ensures structural integrity in thermal cycling and chemically aggressive systems.

Excellent thermal conductivity: delivers efficient heat transfer in large-scale cooling and heat exchange applications.

Reliable long-term performance: reduces downtime and total cost of ownership in mission-critical systems.

Meets international standards: produced in compliance with ASTM B111 and other industry-specific specifications.

The C70600 (B10) copper-nickel alloy boasts superior processing properties. Firstly, this alloy is easily processed by both hot and cold working, and can be formed through various methods such as forging, rolling, and drawing. This provides high flexibility and production efficiency in the manufacturing process. Secondly, C70600 (B10) copper-nickel alloy exhibits good weldability, allowing for connections using methods such as gas welding, resistance welding, and laser welding. Furthermore, this alloy also has good machinability, enabling machining through cutting and milling. Finally, C70600 (B10) copper-nickel alloy can undergo surface treatments such as mechanical polishing, electroplating, and sandblasting to improve its appearance and corrosion resistance.

Petrochemical Industry:

It can be used to manufacture petrochemical equipment, such as reactors, heat exchangers, and evaporators. Because these devices need to withstand high temperatures, high pressures, and highly corrosive media in petrochemical production processes, C70600 nickel-copper alloys meet these requirements in terms of corrosion resistance, high pressure resistance, and high temperature resistance.

It has applications in oil pipelines, where its processes are specialized, and also in nuclear industry pipelines.

Marine Engineering:

With excellent seawater corrosion resistance, it can be used to manufacture marine engineering equipment, such as seawater desalination equipment, offshore oil platforms, and submarine cables. These devices need to operate in harsh seawater environments, and C70600 nickel-copper alloys effectively resist seawater corrosion, extending the service life of the equipment.

It can be used to manufacture seawater desalination evaporator pipes, marine air coolers, and other equipment. Due to its excellent corrosion resistance, it is suitable for use in seawater-related equipment.

It has wide applications in shipbuilding, such as in the manufacture of ship cooling water circuits, sanitary facilities, marine automatic sprinkler fire extinguishing systems, hydraulic and pneumatic pipelines, underwater sheaths, and also in the manufacture of brine pumps and pipelines for submarines and surface ships.

Power Industry

With excellent electrical conductivity, it can be used to manufacture power equipment such as transformers, reactors, and cables. These devices require operation in high-current and high-temperature environments, and C70600 nickel-copper alloys meet these requirements in terms of conductivity and high-temperature resistance.

It can also be used in equipment such as power plant turbine condensers, power plant feedwater heaters, and evaporators.

Mechanical Manufacturing

It can be used to manufacture fasteners and other components for machinery, and also in heat exchange equipment, such as in the application of tubes and tube sheets for heavy-duty water condensers.

Q: Can c70600 be used in fresh water applications?

A: Yes, it performs well in fresh water, but its cost may not be justified if seawater corrosion resistance isn't required.

Q: What causes "green water" sometimes associated with copper-nickel systems?

A: It's often temporary, caused by initial release of copper ions, especially in new systems with low water flow or stagnation.

Q: How to store and handle c70600 tubes to prevent damage?

A: Store in a dry, clean environment. Avoid contact with carbon steel to prevent iron contamination. Use clean, non-metallic slings for lifting.

Q: What standards cover c70600 copper-nickel tube?

A: Common standards include ASTM B111, B466, B467, ASME SB111, and various national/international standards for marine applications.

GNEE is a leading international trader and supplier specializing in a comprehensive range of high-quality copper and copper alloy products. We serve a global clientele across various industries, including HVAC/R, automotive, electronics, construction, and industrial manufacturing.

Our Extensive Product Portfolio

We boast a vast inventory and robust supply chain for virtually all forms of copper products. Our expertise covers:

Copper Tubes & Pipes:

Copper Seamless Tube / Capillary Copper Tube

Copper Welded Tube / Copper Air Conditioning Tube

Copper Refrigeration Tube / Copper Water Tube

Deoxidized Copper Tube / Copper Coil Tube

Copper Sheets & Plates&Strips：

Copper Strip / Copper Thin Strip

Copper Heavy Duty Strip / Precision Copper Strip

Copper Foil Sheet / Copper Thin Sheet

Copper Thick Plate / Copper Chequered Plate

Copper Shim Stock / Copper Busbar

Copper Bars & Rods:

Copper Round Bar / Copper Square Bar

Copper Hexagon Bar / Copper Flat Bar

Copper Alloy Rod / C11000 Electrolytic Tough Pitch (ETP) Copper Rod

Copper Wires & Specialties:

Copper Wire / Bare Copper Wire

Copper Alloy Wire / Oxygen-Free Copper Wire

Copper Profiles / Copper Fittings

Material Grades & International Standards

We provide materials that conform to major international standards to ensure performance, reliability, and global acceptance. Commonly supplied grades and standards include:

Common Grades:

Pure Copper: C10100 (Oxygen-Free Electronic Copper), C10200 (Oxygen-Free Copper), C11000 (Electrolytic Tough Pitch - ETP Copper)

Copper Alloys:

Brass: C26000 (Cartridge Brass), C27200 (Brass), C36000 (Free-Cutting Brass), C38500 (Architectural Bronze)

Phosphor Bronze: C51000

Aluminum Bronze: C60800

Copper-Nickel: C70600 (CuNi 90/10)

Admiralty Brass: C44300

ASTM Standards:

B68 / B68M: Seamless Copper Tube

B75 / B75M: Seamless Copper Pipe

B111 / B111M: Copper and Copper-Alloy Seamless Condenser Tubes and Ferrule Stock

B152 / B152M: Copper Sheet, Strip, Plate, and Rolled Bar

B187 / B187M: Copper Bus Bar, Rod, and Shapes

B301: Free-Cutting Brass Rod

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