ASTM B111 C70600 Copper Nickel Tube | CuNi 90/10 Seamless Tube Supplier

ASTM B111 UNS C70600 Copper Nickel Seamless Tube (CuNi 90/10)

ASTM B 111 UNS C70600 copper nickel tubes, also known as CuNi 90/10 seamless tubes, are widely used in heat exchangers, condensers, evaporators, and seawater cooling systems.

The alloy C70600 (CuNi10Fe1Mn) consists of approximately 90% copper and 10% nickel, with controlled additions of iron and manganese. This composition provides excellent resistance to:

• Seawater corrosion

• Stress corrosion cracking

• Erosion and impingement attack

• Biofouling

Because of these properties, ASTM B111 C70600 copper nickel tubes are widely used in marine engineering, offshore platforms, desalination plants, and power plant cooling systems.

ASTM B111 Copper Nickel Tube Standard

ASTM B111 is the standard specification for seamless copper and copper-alloy condenser tubes and ferrule stock used in heat transfer equipment such as condensers and evaporators.

The specification covers seamless tubes manufactured through processes including:

• Casting

• Extrusion

• Cold drawing

• Annealing

• Straightening

• Trimming

Tubes may be supplied in several tempers:

• Annealed

• Light drawn

• Hard drawn

• Hard drawn and end annealed

Each tube must meet ASTM testing requirements including:

• Expansion test

• Flattening test

• Residual stress test

• Eddy current test

• Hydrostatic test

• Pneumatic test

• Ammonia vapor test

Equivalent Standards

ASTM B111 C70600 copper nickel tubes comply with multiple international standards:

• ASTM B111

• EN 12451

• EN 12449

• BS 2871-3

• DIN 1785

• JIS H3300

• GB/T 8890

Equivalent Material Grades of C70600

ASTM B111 C70600 Tube Specifications

Material

Copper Nickel CuNi10Fe1Mn (CuNi 90/10)

Tube Temper

Bright Annealed

Manufacturing Process

• Hot extrusion

• Cold drawing

Size Range

Outer Diameter
4 mm – 419 mm

Length
Up to 12 meters

Surface Quality

• Bright, smooth, and clean surface

• No burrs on tube ends

• Accurate dimensional tolerance

Inspection

• 100% Eddy Current Testing

• Hydrostatic Testing

• Chemical Composition Analysis

• Mechanical Property Testing

Chemical Composition of C70600 Copper Nickel Tube

The addition of iron and manganese significantly improves resistance to seawater corrosion and erosion, making CuNi 90/10 ideal for marine applications.

Mechanical Properties

Applications of ASTM B111 C70600 Copper Nickel Tubes

Due to their excellent corrosion resistance, CuNi 90/10 tubes are widely used in heat transfer equipment operating in seawater environments.

Power Plants

• Surface condensers

• Turbine cooling systems

• Boiler heat exchangers

Marine and Offshore Engineering

• Ship condensers

• Marine air coolers

• Offshore cooling systems

Petrochemical Industry

• Oil refinery heat exchangers

• Chemical plant cooling systems

Desalination Plants

• Seawater evaporators

• Distillers

• Brine heaters

Other applications include:

• Steam turbines

• Air conditioning systems

• Shell and tube heat exchangers

Copper Nickel Tubes and Pipes Product Range

We supply a complete range of copper nickel alloy products, including:

CuNi 90/10 – UNS C70600

• ASTM B111 copper nickel tubes

• ASTM B466 copper nickel pipes

• ASTM B171 copper nickel plates

• ASTM B151 copper nickel bars

CuNi 70/30 – UNS C71500

Higher strength alloy designed for high velocity seawater environments.

UNS C71640

Advanced copper nickel alloy for high corrosion resistance applications.

Advantages of ASTM B111 C70600 Copper Nickel Tubes

✔ Excellent resistance to seawater corrosion
✔ High resistance to biofouling
✔ Good mechanical strength
✔ Long service life
✔ Low maintenance costs

These advantages make CuNi 90/10 copper nickel tubes the preferred material for marine heat exchangers and seawater cooling systems.

Copper Nickel Tube Manufacturer and Supplier

We are a professional manufacturer and global supplier of ASTM B111 C70600 copper nickel seamless tubes for marine and industrial applications.

Our services include:

• Custom tube sizes

• Fast production

• Competitive pricing

• Export packaging

All tubes can be supplied with EN 10204 3.1 Mill Test Certificate (MTC) and packed in seaworthy wooden cases for international shipping.