Cuponal™

The leading manufacturer of top-grade copper-clad aluminium electrical conductors.

Highlights

60%

lower weight

60% lower weight compared to copper conductors

Up to 40%

cost reduction

Up to 40% cost reduction compared to copper conductors

60%

lower surface

60% lower surface contact resistance compared to aluminium conductors

Cuponal™: Co-Extruded Copper-Clad Aluminium Conductors

Four decades of experience with co-extruded metal composites have made Bruker Hydrostatic Extrusions the leading manufacturer of top-grade copper-clad aluminium (CCA) electrical conductors. Under the brand name Cuponal, Bruker Hydrostatic Extrusions supplies bi-metal busbars, rods, profiles, and wire with a seamless high conductivity copper outer cladding that is high-pressure-bonded to an electrical grade aluminium core.
Cuponal products offer decisive advantages for industries where price and weight are critical, such as equipment for electric power distribution, automation and control centers, renewable energy electrical inverters, and electrical components for aerospace, railway, and marine applications. In addition, Cuponal products offer unique bimetallic connection properties not available with other materials.

Method & Benefits

Hydrostatic Extrusion

Materials extruded by our hydrostatic extrusion process have performance parameters that are not achievable by any other extrusion method, opening up a performance-enhancing/cost-saving route for equipment and product designers. In addition to Cuponal, we extrude superconducting materials, aluminium-based high performance alloys and a wide range of specialist metal composites. The functional principle of hydrostatic extrusion, using oil at high pressure around the billet to effect the extrusion, eliminates friction between the billet and the press container. Thus, extremely high reduction ratios - up to 300:1 in one pass – are achievable. The uniform flow of material in this process produces a uniform edge-to-edge fine grain, homogeneous structure in the extruded product.

Benefits in brief

60% lower weight compared to copper conductors
Up to 40% cost reduction compared to copper conductors
60% lower surface contact resistance compared to aluminium conductors
Reduced freight costs compared to copper conductors
Reduced susceptibility to raw material price fluctuations
Simplified electrical connections between aluminium and copper components

Products

Busbars

Cuponal delivers cost and weight saving advantages over solid copper, yet retains the surface properties of a copper busbar. It is often possible to substitute a copper bar with a Cuponal bar of equal dimensions, which yields the maximum cost saving.

Wires

Cuponal delivers cost and weight saving advantages over solid copper, yet retains the surface properties of a copper conductor. It is often possible to substitute copper wire with Cuponal wire of equal diameter, which yields the maximum cost saving.