Resource Library

What situation is each best for?

Copper-Zinc is good for flexible mesh containment systems.

Copper-Nickel is good for rigid (e.g. welded) mesh.

Copper-Silicon is good where rigid mesh is needed, or where panels can have flexible connections.

New Technologies Make Commercial Scale Copper Rotor Die-Casting Viable

Copper is an excellent material to use for rotors due to its high conductivity. Copper’s conductivity is rated at 57 Ms/m, which is significantly higher than that of aluminium (37 Ms/m). This makes copper the material of choice for a number of induction motor applications worldwide.

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What type of bronze is used for modern works of art?

Bronze has been used for centuries to create statues, and is still the first choice for modern, striking works of art. The most widely-used alloys for such objects are leaded gunmetals, such as CC492K and CC491K.

What type of copper is specified to make wire used to transmit electricity to trams, trolley buses or trains?

Pure copper is too soft for overhead wires and the copper alloys used are specified in BS EN 50149:2012. These are alloys of copper with respectively small amounts of silver, magnesium, tin or cadmium.

What types of cages can copper alloys be used for?

Copper alloys can be used for current cage designs as well as other future, more cost-effective designs and applications. Today, it can replace round HDPE cages, and square steel cages with and without platforms. Trials using the Aquapod 3600 and the OCAT cages with copper mesh are currently being conducted, and the Ocean Spar 3000 submersible cage is in prototype discussions.

What values of electrical conductivity can be obtained in high purity copper castings? Are they comparable to the values available for wrought copper?

Generally, the values of the International Annealed Copper Standard (IACS) are lower than those of wrought copper due to the presence of a small percentage of gas porosity and a small percentage of impurities such as iron.  A value of 93% IACS is guaranteed but, with a very low porosity and very pure copper scrap (such as that from busbars), a value up to 102% IACS may be obtained.

What are the benefits of flame-free jointing techniques?

Copper flame-free jointing can be done by press fittings and push-fit fittings. The benefits of these types of fittings are:

  • Work can be undertaken with occupants in the building
  • No flux fumes
  • No additional ventilation required
  • No need for hot work permits/certificates
  • Quick to install.
Only 40% binding energy savings target for 2030 can deliver EU objectives for competitiveness, energy and climate

The Coalition for ENERGY SAVINGS, October 2013

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opper Wire Newsletter Autumn 2010: Competitiveness

Striking the balance betweenRegulation and Competitiveness

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opper Wire Newsletter Spring 2013: Copper industry and EU Regulation

ECI, a “go to source” of scientific information for EU policy makers

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When flux has been used in jointing copper pipework do you have to flush the pipework afterwards?

Yes, any flux left inside the pipework must be removed after jointing is complete.

What are the major benefits of copper tubes for air conditioning applications?

Energy efficiency: reducing the diameter of copper tubes in coils provides an economical path to energy efficiency for air conditioning and refrigeration (ACR) products.

Less material: tube-diameter reduction results in more effective heat transfer and consequently smaller, lighter coils. Less tube and fin material could provide equivalent heat transfer or more heat transfer; or the same material could provide much more heat transfer.

Less refrigerant: a dramatic reduction in refrigerant volume is a further benefit of copper tubes.

Durability: coils made of copper tubes and aluminium fins (CTAF) or copper tubes and copper fins (CTCF) are durable and dependable. They set the industry standard for corrosion resistance and long, reliable service life.

Familiarity: tube suppliers, OEMs, mechanical systems engineers and HVAC contractors are all highly familiar with CTAF technology.  Up and down the value chain, the materials and processes are well understood.