Copper Full Round Edge Rectangular Bar is typically used as bus bar or for other electrical projects. All of the bars are Copper 110 alloy, giving them excellent electrical conductivity. The material is plated in either silver or tin to allow the copper to reach higher temperatures without degrading or losing electrical conductivity.
In short, silver plated copper bar is more conductive. Tin plated copper bar is lower cost. We have an in depth analysis of the two types of material at this blog post.
