Acquiring knowledge is the first step towards wisdom
As part of the mission of the ABA, the acquisition of knowledge through scientific testing is paramount. The goal is to put bimetals into applications sure to function safely and as designed. Through independent testing, our members are as dedicated to ruling out those subpar applications, as they are in commercializing the truly revolutionary ones. Only through scientific testing can an application's usefulness be measured. Here are but a few examples of the high degree of knowledge acquired through researching the facts.
Bond Integrity in Aluminum/Copper-Clad Metals
by Materion Technical Materials
The bond between the parent metals of a bimetal is the very thing that makes it unique from all other alternatives. The bond is stronger than the two single-state metals that it unites, which allows it to perform as one metal. As the number of applications utilizing Cu/Al clad products continues to expand, understanding metallurgical adhesion between Cu and Al through the controlled formation of a thin intermetallic compound layer is more important than ever.
Copper-Clad Aluminum Performs Like Copper in Termination
by Peter Graser
It has been understood by the bimetallics industry for nearly 1/2 a century that Copper-Clad Aluminum wire and Copper wire are similar metals in terms of their ability to terminate with components of electrical circuits. The National Electrical Code (NEC), until the correction was made within the current 2020 edition, required that CCA wire applications "Identify" themselves (a widely misunderstood rule in Code) for their proper applications, in this case, termination with copper-only devices, splice connectors, and terminals. The following case study explains the "Identification" rule in black and white.
This paper compiles several studies and analyses regarding the corrosion performance of buried Copperweld® Copper-Clad-Steel (CCS) conductors. These range from the early 1900’s with the invention of Copperweld® through the present day with studies performed by independent parties as well as Copperweld in-house testing. The purpose is to present the available information so that prospective users of Copperweld® CCS wire and strand can evaluate the corrosion resistance and expected performance within their specific application and area.