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CuNi Round Bar
CuNi Round Bar
Φ100 Copper Nickel Round Bar

Our DIN 86019 copper nickel round bar has a strong ability for anti-corrosion, stable chemical composition, easy to machine, reasonable price.

Shihang C70600 Round Bar
Φ200 Copper Nickel Round Bar

The Shihang EEMUA 144 Copper Nickel Round Bar comes in different thicknesses.

Φ310 Copper Nickel Round Bar

Our Shihang EEMUA 234 Copper Nickel Round Bars showcase remarkable mechanical properties.

Related Products of Copper Nickel Round Bar

You can avail of our CuNi 90/10 copper nickel round bar in different sizes and forms.
At Shihang, you can get the best CuNi 70/30 copper nickel round bar at the best price.
Shihang C71500 copper nickel round bar is available in different sizes.
For your specific needs, we can provide Shihang copper nickel round bar in different types in stock.

Send Your Inquiry on Shihang Copper Nickel Round Bar Now.

  • 100% Meet the Standard
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  • EN 10204 3.1 Certificate
  • Third Party Inspection Available

Shihang Copper Nickel Round Bar

Depending on your application needs, Shihang Copper Nickel Round bar features a 90/10 (C70600) grade round bar or 70/30 (C71500) grade round bar.

For your specific applications, Shihang copper-nickel round bars come in different standards such as DIN 86087, DIN 86088, EEMUA 146 and EEMUA 234. Shihang copper-nickel round bar has passed strict dimensional standards according to EEMUA, DIN, JIS, and ASME.

Shihang copper-nickel round bar is used in off-shore oil drilling companies, power generation, petrochemicals, gas processing, pharmaceuticals, and more. For your specific needs, we can provide Shihang copper-nickel round bar in different types in stock.

We are experts in manufacturing a wide range of copper-nickel round bars such as flat bars, hexagonal bars, rod, black bar, triangle bars, etc.

Shihang is your reliable copper-nickel round bar supplier and manufacturer in China that you can rely on. All of our Shihang copper-nickel round bar is manufactured for extremely close tolerance for surface finish, hardness, roundness, and straightness.

Shihang manufacturing factory offers copper-nickel round bar, obtainable in wide-ranging lengths, sizes, dimensions, and specifications to suit your precise necessities.

Shihang provides you the best range of copper-nickel round bar with effective and timely delivery. The entire array of Shihang copper-nickel round bar is tested on standard quality norms before we deliver to ensure complete satisfaction.

In China, Shihang is one of the popular manufacturers and suppliers of copper-nickel round bar. Shihang has obtained international certifications such as SGS, ISO 9001, CE, and much more.

Presently, Shihang has high-tech testing and manufacturing facility, implement strict control with certifications for our CuNi Fittings.

For the orders, we will provide a free sample for your copper nickel round bar to check the quality before a large order.

Whether you need copper-nickel round bar or need to custom any copper-nickel round bar product, Shihang is always satisfied your needs.

Contact us today!

Copper Nickel Round Bar: The Ultimate FAQ Guide

This guide has all the vital information about copper nickel bars such as grades, classification criteria, standard length, properties, surface finish options and quality testing amongst others.

It will help you choose suitable copper nickel pipes.

Take a look:

What is Copper Nickel Round Bar?

Copper nickel round bar

Copper nickel round bar

Coper nickel round bar is a type of round bar consisting of an alloy of nickel and copper.

The characteristics of this alloy facilitate the use of the bar in a wide range of industries.

What are the Available Grades of Copper Nickel Round Bar?

You can have the following grades for coppernickel round bars:

· Copper-nickel 90/10 Round Bar

Copper is the main element of this grade with a chemical composition of 90% maximum.

It has a higher thermal conductivity, and its use is in applications that are less susceptible to corrosion.

You can also use it in high pressure and temperature applications.

· Copper-nickel 70/30 Round Bar

Nickel is the primary element in this type of copper-nickel round bar.

It has a chemical composition of at most 30% compared to 10% nickel in the 90/10 grade.

Its use is mainly in highly corrosive applications, and whose pressure and the temperature are relatively low.

What are the Benefits of Copper Nickel Round Bar?

You get the following benefits through the use of copper-nickel round bar:

  • Excellent toughness and ductility
  • High resistance to corrosion and erosion in seawater
  • High resistance to biofouling
  • Reliable welding and fabrication characteristics

Are there Limitations of Copper Nickel Round Bar?

The major limitation of the use of a copper-nickel round bar is the cost, which is relatively higher.

That is the purchasing and maintenance cost.

Maintenance involves hiring experts, which in some instances, may not be readily available.

This can result in poor performance of your bars and the application.

How many Types of Copper Nickel Bars are there?

You have the following types of copper-nickel bars in the market:

 Types of copper nickel bar

Types of copper-nickel bar

  • Hexagon copper-nickel bar has a hexagonal shape on its ends.
  • A round copper-nickel bar has circular ends, which are similar to its design.
  • Square copper-nickel bar has square ends
  • Rectangle copper-nickel bar has rectangular ends
  • A flat copper-nickel bar has its ends flat.
  • A polished copper-nickel bar has it’s surface polished
  • A bright copper-nickel bar has a bright surface finish.
  • A threaded copper-nickel bar has threads on its ends.

What are the Properties of Copper Nickel Bar?

Copper-nickel bars have the following properties:

  • A perfect cold working functionality
  • A high anti-corrosive effect
  • Highly ductile
  • A high electrical resistivity

What is the Measuring Process of Copper Nickel Round Bar?

The process of measuring a copper-nickel round bar uses an accurate tape measure to get the outer dimensions.

These dimensions include the length and cross-sectional length.

Measuring the weight of a copper-nickel round bar uses a weighing machine.

For accurate measurements, you have to use well-calibrated machines.

Is there Standard Length of Copper Nickel Round Bar?

Yes. The standard length for copper-nickel round bar ranges between 100 mm and 3660mm.

You can, however, get a customized period from a reputable manufacturer.

Which Surface are Finishing Types available for Copper Nickel Round Bar?

The main surface finishing types that you can use on copper-nickel round bars are:

 Round copper nickel bar

Round copper-nickel bar

· Matte Finish

This kind of surface finish does not go through further processing during the manufacturing process.

The surface appearance is dull and is not suitable for use in aesthetic applications.

Also, this surface finish is cheaper compare to other surface finishing options.

Copper-nickel round bars with this type of finishes are standard equipment in the pharmaceutical industries, chemical industries, water treatment plants.

· Brushed Finish

This type of finish has a non-reflective dull characteristic on the surface of your copper nickel round bar.

It involves the use of a 120-180 grit belt to sand the bar surface in one direction.

Then an 80-120 grit non-woven belt softens the surface to create a brushed finish.

Copper-nickel round bars with this type of finish is mainly of use in heat exchangers, hot water tanks, and evaporator tubes.

· Mirror Surface Finish

It creates a reflective surface finish to the copper-nickel round bars.

It involves polishing these bars, which enhance their appearance.

Mirror surface finish has the advantage of improving the corrosion resistance of copper-nickel round bars.

Applications that use these bars include heat exchangers.

Other types of surface finishing for copper-nickel round bars include a bar, rough tuned, bright polished, and BA finish.

Are there Standard Specifications for Copper Nickel Round Bar?

Yes, copper-nickel round bar has several specifications which include:

  • Grade of copper-nickel round bar
  • Type of copper-nickel round bar
  • Thickness and length of a copper-nickel round bar
  • Quality standards of copper-nickel round bar.

Where can you use Copper Nickel Round Bar?

A copper-nickel round bar has a versatile use in several industries like in:

  • Cooling plants
  • Evaporator tubes
  • Heat exchanger
  • Hot water tanks
  • Valve trims and pump components
  • Marine hardware and fittings
  • Pharmaceutical equipment
  • Condensers
  • Gas processing
  • Pulp and paper equipment
  • Petrochemical equipment
  • Propeller sleeves
  • Salty water pipes and pipe fittings

What is the Chemical Composition of Cupronickel Round Bar?

Cupronickel round bar has different chemical compositions depending on its grade.

That is:

Element Cupronickel 70/30 Cupronickel 90/10
Copper 65.0 88.6
Manganese 1.0 1.0
Lead 0.05 0.05
Iron 0.4-1.0 1.8
Nickel 29-33 9-11
Zinc 1.0 1.0

How much does Copper Nickel Round Bar Cost?

Several factors affect the cost of copper-nickel round bars.

These factors include:

· Grade of a Copper-Nickel Round Bar

The application of the different grades varies due to their unique characteristics.

This affects the cost of the copper-nickel round bar that you purchase.

The type of bar you select should fit into your application considering the operating environment, such as salinity and operating temperature and pressure.

· Copper-nickel Round Bar Type

Different types of copper-nickel round bars fit into differently into applications.

These bars also operate differently.

As such, type affects the price of a given copper-nickel round bar.

· Copper-nickel Round Bar Dimensions

The different dimensions of a copper-nickel round bar affect its price.

These dimensions include the length and thickness.

For a proper costing of your copper nickel round bar, you have to specify the necessary dimensions.

How do you Test the Quality of Copper Nickel Round Bar?

Quality testing involves subjecting copper-nickel round bar to the following tests:

4 Copper nickel round bar


Copper-nickel round bar

· Radiographic Test

The radiographic test determines the internal structure of a specific copper-nickel round bar.

This test uses tools like X-ray fluorescence and X-ray diffractometry.

· Pitting Corrosion Test

Pitting corrosion test identifies the temperature in which a copper-nickel round bar produces pitting.

This test helps in finding the optimum operating temperature for a given bar.

· Eddy Current Test

Eddy current test determines the surface defects of a copper-nickel round bar.

Such surface defects include grinder burn and cracks.

This test consists of a flowing alternating current through wire coils.

Testing is by connecting the coil to a copper-nickel round bar.

· Buckling and Crushing Test

This determines the deformation of a cupronickel round bar under a given load size.

It helps in deciding where to use these bars in a given application.

· Flattening and Flaring Tests

These tests help in evaluating the quality of a welded copper-nickel round bar.

Flattening test involves flattening the cupronickel round bar along with the welded point.

You have to carry out this process at room temperature and gradually up to a given height.

The given height is the minimum flattened height.

The flaring test involves the expansion of the welded copper-nickel round bar along the welded point using a conical steel mandrel.

This mandrel should be hard and circular.

The expansion should increase the bar’s diameter to a specified level.

· PMI Test

A positive material identification test aims at analyzing the chemical elements present in a copper-nickel bar.

This test is critical in ascertaining the grade and use of a particular copper-nickel round bar.

Through the PMI test, you can identify such properties as corrosion resistance, heat resistance, and durability.

How can you Package Copper Nickel Bar?

The process of packing copper-nickel bars involves packing them in environmentally friendly poly bags.

You then place these bags within a wooden box, crate, or wood pallets for shipping to the market.

What is the Production Process of Copper Nickel Round Bar?

The fabrication process of the copper-nickel round bar involves these steps:

 Metal bar production process

 Metal bar production process

· Physical and Chemical Analysis of Raw Materials

Raw materials for copper-nickel round bar go through physical and chemical testing.

Here the intention is to ascertain the quality of these materials and their durability.

Physical and chemical analysis of raw materials also checks the chemical composition and the suitability to the functioning of a copper-nickel round bar.

· Heating

The next step involves the heating of the raw materials to a semi-solid state.

The process takes place in a controlled environment to ensure there is uniform heating.

Heating improves the ductility of the raw material.

· Hot Rolling

The essence of hot rolling is to reduce the size of the heated copper-nickel bars as per the specifications. It is a continuous process that gives it the desired shape.

· Quality Inspection

This step checks the quality of the hot rolling process.

It guarantees quality copper-nickel round bars that meet specific standards.

· Water Quenching

This is a vital step in giving your bars the hardness and stress it requires.

It involves the use of water to cool your bars rapidly.

There is a need for controlled conditions for this to function properly.

· Quality Inspection

The inspection here is to check on the effects of the water quenching process.

That is the hardness and stress effect.

· Physical Testing

Physical testing checks the durability and strength of your copper nickel round bars.

It also ascertains the bar grade and its performance.

· Packaging

This is the final process where packing of the copper-nickel bars takes place as per the given required methods.

How do you Weld Copper Nickel Bar?

There are several methods that you can use to weld your copper nickel bar. These are:

· Shielded Metal Arc Welding (Manual Metal Arc Welding)

This refers to a manual arc welding method that utilizes consumable electrodes.

A flux covers theses consumable electrodes forming a weld.

An electric current, either a direct current or alternating current, forms the electrical.

This is between the joining copper-nickel bars and the electrode.

The electrode and bar piece melts, creating a weld pool that cools and forms the joint.

During the weld laying process, there is a disintegration of the flux coating releasing vapor.

It is this vapor that acts as the shielding gas offering a slag layer.

The shielding gas and the slag layer are essential in protecting the welded area against atmospheric contamination.

It is a standard method due to its simplicity and wide range of use.

· Gas Metal Arc Welding (Metal Inert Gas Welding)

Gas metal arc welding uses electric arch that forms between the copper-nickel bar piece and the metal inert gas wire electrode.

This electric arc heats the bar until it melts and forms a joint.

A shielding gas from the welding gun protects the joint from atmospheric contamination.

You can automate or semi-automate this process.

Metal transfer methods in Gas arc welding include short-circuiting, spray, globular, and pulsed spray.

Globular emits a lot of heat during the welding process hence its least usage.

Short-circuiting uses lower current compared to globular hence a lower heat emittance.

This allows for welding of thinner copper-nickel round bars.

Spray method is ideal for welding a copper nickel round bars while using an inert shielding gas.

A pulsed spray is similar to the spray method, with the exception being the use of the pulsing current in melting the filler wire.

· Gas tungsten Arc Welding (Tungsten Inert Gas)

Tungsten inert gas method involves the use of a tungsten electrode that is on-consumable to form the weld.

Shieling of the welding area is through the use of an inert shielding gas, which can either be helium or argon.

Gas tungsten arc welding is ideal for thin copper-nickel round bars since it gives maximum control to the operator compared to other methods.

This results in a more reliable and high-quality welding process.

It is, however, a complex method to use and is slow compare to the other methods.

· Resistance Welding

Resistance welding uses pressure and flowing current to join copper-nickel round bar—the current flow for a given period for a proper weld.

The main advantage of this method is it does not require the use of other materials to form the joint.

This saves time and resources.

The main types of resistance welding include projection, flash, and upset welding, and spot and seam welding.

Also, the significant difference between these types is the shape ad type of weld electrode, which you use in the application of pressure ad current conduction.

What is the Best Copper Nickel Round Bar Cutting Technique?

The ideal cutting technique for a copper-nickel round bar is the use of plasma cutting arc.

This method uses ionized gas, which is superheated.

The superheated gas then flows via a plasma torch to the point you want to cut.

This melts the point of cutting it as per your expectations.

The cutting process goes through several steps which are:

  • Initiation of pilot arcing
  • Generation the main arc
  • Localize heating and melting
  • Material ejection
  • Arc movement.

It is the preferred option over other methods due to its ease of use and relatively lower cost.

Other methods are waterjet cutting, laser-cutting, and oxyfuel cutting.

Are there Copper Nickel Round Bar Test Certificates?

Yes. Quality copper-nickel round bars should have test certificates.

These certificates ascertain their quality and assure the end-users.

Such certificates include:

  • Raw material certificates
  • Third-party inspection certificate
  • Radiography test certificate
  • EN 10204/3.1B

Is there a difference between Copper Nickel Bar and Copper Nickel Rod?


There is a difference between a copper-nickel bar and a copper-nickel rod.

The copper-nickel rod has a circular cross-section.

However, a copper-nickel bar can have different cross-sections.

Such cross-section includes rectangular, square, triangle, or hexagon cross-sections.

You can easily coil copper-nickel bar, but you cannot coil coper nickel rods.

The diameter of the copper-nickel rod exceeds 12mm, while that of copper-nickel bars does not exceed 12mm.

In short, before you choose any copper-nickel bar, ensure you consider everything mentioned in this guide.

With this information, you will choose high quality and reliable Cupronickel bar.

Contact us now for the best prices on the copper-nickel round bar.

You can also send the inquiry to email: directly.

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