{"id":41249,"date":"2020-08-26T10:09:20","date_gmt":"2020-08-26T08:09:20","guid":{"rendered":"https:\/\/fhi.nl\/nieuws\/the-choice-of-the-right-material-for-your-busbar-copper-aluminium-or-cuponal\/"},"modified":"2025-03-06T16:11:37","modified_gmt":"2025-03-06T15:11:37","slug":"the-choice-of-the-right-material-for-your-busbar-copper-aluminium-or-cuponal","status":"publish","type":"news","link":"https:\/\/fhi.nl\/en\/news\/the-choice-of-the-right-material-for-your-busbar-copper-aluminium-or-cuponal\/","title":{"rendered":"The choice of the right material for your busbar \u2013 Copper, Aluminum or Cuponal"},"content":{"rendered":"<header id=\"header\" class=\"header header--low\">\n\n\t\n\t\t\t<div class=\"header__background header__background--graphic\"><\/div>\n\t\n\t<div class=\"container\">\n\t\t<div class=\"header__content\">\n\t\t\t<div class=\"header__first header__first--alone\">\n\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t<h1 class=\"header__title\" >\n\t\t\t\t\tThe choice of the right material for your busbar \u2013 Copper, Aluminum or Cuponal\t\t\t\t<\/h1>\n\n\t\t\t\t<div class=\"header__dots-line\">\n\t\t\t\t\t<svg width=\"431\" height=\"9\" viewbox=\"0 0 431 9\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M430.799 4.192a1.136 1.136 0 1 1-2.272-.001 1.136 1.136 0 0 1 2.272 0Zm-27.272 0a1.135 1.135 0 1 1-2.27 0 1.135 1.135 0 0 1 2.27 0Zm-27.27 0a1.136 1.136 0 1 1-2.272-.001 1.136 1.136 0 0 1 2.272 0Zm-27.272 0a1.39 1.39 0 1 1-2.78 0 1.39 1.39 0 0 1 2.78 0Zm-27.78 0a1.645 1.645 0 1 1-3.29 0 1.645 1.645 0 0 1 3.29 0Zm-28.29 0a1.9 1.9 0 1 1-3.799 0 1.9 1.9 0 0 1 3.799 0Zm-28.799 0a2.154 2.154 0 1 1-4.308 0 2.154 2.154 0 0 1 4.308 0Zm-29.308 0a2.41 2.41 0 1 1-4.819 0 2.41 2.41 0 0 1 4.819 0Zm-29.819 0a2.663 2.663 0 1 1-5.326.001 2.663 2.663 0 0 1 5.326-.001Zm-30.327 0a2.919 2.919 0 1 1-5.837 0 2.919 2.919 0 0 1 5.837 0Zm-30.837 0a3.173 3.173 0 1 1-6.345.001 3.173 3.173 0 0 1 6.345 0Zm-31.346 0a3.428 3.428 0 1 1-6.856 0 3.428 3.428 0 0 1 6.856 0Zm-31.856 0a3.683 3.683 0 1 1-7.365 0 3.683 3.683 0 0 1 7.365 0Zm-32.365 0a3.937 3.937 0 1 1-7.875 0 3.937 3.937 0 0 1 7.875 0Zm-32.874 0a4.192 4.192 0 1 1-8.384 0 4.192 4.192 0 0 1 8.384 0Z\" fill=\"#FFF960\"\/><\/svg>\t\t\t\t<\/div>\n\n\t\t\t\t\n\t\t\t\t\n\t\t\t<\/div>\n\n\t\t\t\n\t\t<\/div>\n\t<\/div>\n<\/header>\n\n\n\n<div class=\"text bg--white\">\n\t<div class=\"container\">\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"text__content text__content--1-col\">\n\t\t\t<h4>Promet supplies bus bars in various materials. In this article we compare the materials and give tips to make the right choice.<\/h4>\r\n<h2>Copper<\/h2>\r\n<ul>\r\n<li>Traditional material for electro technical applications has excellent electrical properties<\/li>\r\n<li><strong>ETP copper<\/strong>\u00a0is used when a high electrical conductivity is required. ETP copper contains oxygen, so no requirements can be set with respect to brazing and weldability<\/li>\r\n<li><strong>OFE copper\u00a0<\/strong>is a highly pure, not deoxidized and oxygen-free copper, which has a high electrical and thermal conductivity. OFE copper can be very well brazed and soldered and welded.<\/li>\r\n<li>High market availability -&gt; volatility is higher than that of aluminum<\/li>\r\n<li>In general, copper can be mechanically processed very well<\/li>\r\n<\/ul>\r\n<h2>Surface Coating<\/h2>\r\n<p>Due to corrosion (eg oxidation), an impurity layer is formed on the contact surface, which increases the resistance. An impurity layer resistance disturbs, especially at very low voltages.<br \/>In order to reduce the contact resistance at connection contacts, impurity layers can or must be removed before the connection. Ideally, such contact surfaces are refined.<\/p>\r\n<p>We can offer the following coating options for this material:<\/p>\r\n<ul>\r\n<li>Tin<\/li>\r\n<li>Nickel<\/li>\r\n<li>Silver<\/li>\r\n<\/ul>\r\n<h2><a href=\"https:\/\/www.nijkerk-ne.com\/wp-content\/uploads\/2020\/08\/copperplate-1.png\"><img decoding=\"async\" src=\"https:\/\/www.nijkerk-ne.com\/wp-content\/uploads\/2020\/08\/copperplate-1-300x151.png\" alt=\"\" width=\"399\" height=\"201\" data-src=\"https:\/\/www.nijkerk-ne.com\/wp-content\/uploads\/2020\/08\/copperplate-1-300x151.png\" data-srcset=\"https:\/\/www.nijkerk-ne.com\/wp-content\/uploads\/2020\/08\/copperplate-1-300x151.png 300w, https:\/\/www.nijkerk-ne.com\/wp-content\/uploads\/2020\/08\/copperplate-1-416x209.png 416w, https:\/\/www.nijkerk-ne.com\/wp-content\/uploads\/2020\/08\/copperplate-1.png 562w\" data-sizes=\"(max-width: 399px) 100vw, 399px\" data-was-processed=\"true\" \/><\/a><\/h2>\r\n<h2>Aluminum (EN 6101B-T6)<\/h2>\r\n<ul>\r\n<li>Is increasingly used in electrical applications<\/li>\r\n<li>Alloy is hard, which has a positive impact on the flow properties of the aluminum<\/li>\r\n<li>Contact resistance is still very good compared to other aluminum alloys<\/li>\r\n<li>Because of the high degree of hardness, it is more challenging for mechanical processing, especially when bending with small radii. Promet has developed a process by which the same radii can be used as for copper busbars<\/li>\r\n<li>Availability of the aluminum alloy is limited<\/li>\r\n<\/ul>\r\n<h2>Surface Coating<\/h2>\r\n<p>Due to corrosion (eg oxidation), an impurity layer is formed on the contact surface, which increases the resistance. An impurity layer resistance disturbs, especially at very low voltages. Some of these thin layers are penetrated again when switching slightly higher voltages. This effect is called fritting and the required voltage is called the fritting voltage. Constant and\/or low resistances are important because of the influence on the signals (for example electro-acoustic or measurement technology) or because of power losses. The choice of surface materials is also important for plugging or switching in a current-carrying state. In addition, mechanical loads have an effect on the surfaces. Both can easily destroy thin noble metal layers. Thus, the contact surface must be designed differently depending on the application.<br \/>In order to reduce the contact resistance at connection contacts, impurity layers can or must be removed before the connection.\u00a0<strong>Known for this in particular is aluminum, which forms hard insulating oxide layers even after a short storage.<\/strong>\u00a0It is used only for large conductor cross-sections and brushed free for making electrical contacts. Ideally, such contact surfaces are refined.<\/p>\r\n<p>We can offer the following coating options for this material:<\/p>\r\n<ul>\r\n<li>Tin coating<\/li>\r\n<li>Nickel (electro less nickel plating)<\/li>\r\n<li>Nickel (nickel electroplating) Adhesion is not reliably guaranteed<\/li>\r\n<li>Copper\/tin<\/li>\r\n<li>Electro less nickel\/tin plating (optimum coating for EN AW 6101B T6)<\/li>\r\n<li>Silver<\/li>\r\n<\/ul>\r\n<h2>Aluminum (Pure E-Al 1350)<\/h2>\r\n<ul>\r\n<li>Traditional aluminum alloy for electro technical applications<\/li>\r\n<li>Contact resistance very good compared to other aluminum alloys<\/li>\r\n<li>Even after a short storage, aluminum forms hard insulating oxide layers<\/li>\r\n<li>The material is relatively soft. Use with bolted connections in dependence of the torques is risky because the flow properties have negative effects on the strength of the connection with respect to the time axis. The screw connection can come loose.<\/li>\r\n<li>High market availability -&gt; volatility of the price more stable than copper<\/li>\r\n<li>E-Al 1350 is very well machinable<\/li>\r\n<li>Contact resistance very good compared to other aluminum alloys<\/li>\r\n<\/ul>\r\n<h2>Surface Coating<\/h2>\r\n<p>Due to corrosion (eg oxidation), an impurity layer is formed on the contact surface, which increases the resistance. An\u00a0<strong>impurity layer resistance disturbs<\/strong>, especially at very low voltages. Some of these thin layers are penetrated again when switching slightly higher voltages. This effect is called fritting and the required voltage is called the fritting voltage. Constant and\/or low resistances are important because of the influence on the signals (for example electro-acoustic or measurement technology) or because of power losses. The choice of surface materials is also important for plugging or switching in a current-carrying state. In addition, mechanical loads have an effect on the surfaces. Both can easily destroy thin noble metal layers. Thus, the contact surface must be designed differently depending on the application.<br \/>In order to reduce the contact resistance at connection contacts, impurity layers can or must be removed before the connection.\u00a0<strong>Known for this in particular is aluminum, which forms hard insulating oxide layers even after a short storage.<\/strong>\u00a0It is used only for large conductor cross-sections and brushed free for making electrical contacts. Ideally, such contact surfaces are refined.<\/p>\r\n<p>We can offer the following coating options for this material:<\/p>\r\n<ul>\r\n<li>Tin coating<\/li>\r\n<li>Nickel (electro less nickel plating)<\/li>\r\n<li>Nickel (nickel electroplating)<\/li>\r\n<li>Copper\/tin<\/li>\r\n<li>Electro less nickel\/tin plating<\/li>\r\n<li>Silver<\/li>\r\n<\/ul>\r\n<h2>Cuponal\/Aluminum-composite Light as aluminum, conductive as copper.<\/h2>\r\n<p>A technically \u201cmature\u201d bimetallic composite material for use as an electrical connection in switching cabinets, switchgears and distribution boards.\u00a0<\/p>\r\n<p>An aluminum core is compressed with a sheath of copper, so that both form an inseparable unit. Thus, the positive properties of electrically high conductivity copper can be optimally combined with the light weight of aluminum.<\/p>\r\n<h2>Advantages<\/h2>\r\n<ul>\r\n<li>Weight reduction<\/li>\r\n<li>Processing like copper busbars (drilling, bending, cutting, etc.)<\/li>\r\n<li>Better heat dissipation over a larger surface<\/li>\r\n<li>Cost savings due to lower material costs<\/li>\r\n<li>Advantages of copper and aluminum are combined<\/li>\r\n<li>Surface of copper (low contact resistance)<\/li>\r\n<li>Thermal short-circuit strength similar to that of copper, since transients cause the current to flow through the outer surface of the conductor (skin effect)<\/li>\r\n<li>Little transport time and low transport costs<\/li>\r\n<li>Smaller price fluctuations due to lower copper content<\/li>\r\n<li>Easy handling<\/li>\r\n<\/ul>\r\n<p>Download data sheet or\u00a0<a href=\"https:\/\/www.nijkerk-ne.com\/contact\/\">contact Nijkerk Electronics<\/a>\u00a0for more information.<\/p>\r\n<p>\u00a0<\/p>\t\t<\/div>\n\t<\/div>\n<\/div>\r\n\t<div class=\"articles bg--offwhite automatic\">\r\n\t\t<div class=\"container\">\r\n\t\t\t<div class=\"articles__header\">\r\n\t\t\t\t\t\t\t\t\t<div class='heading-wrapper'><svg width=\"13\" height=\"13\" viewbox=\"0 0 13 13\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><circle cx=\"6.394\" cy=\"6.5\" r=\"6.394\" fill=\"#000\"\/><\/svg><h2>Related articles<\/h2><\/div>\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"\/en\/profiel\/nijkerk-electronics\/\" class=\"button button--outline\">view profile<\/a>\r\n\t\t\t\t\t\t\t<\/div>\r\n\t\t\t\t\t\t<div class=\"post-grid post-grid--no-padding\">\r\n\t\t\t\t\n<a class=\"single-item single-item__articles\" href=\"https:\/\/fhi.nl\/en\/news\/greenpeace-onderzoeker-over-microplastics-hoe-zichtbaarder-het-probleem-hoe-groter-de-kans-dat-we-actie-ondernemen\/\" data-id=\"43232\">\n\t<div class=\"single-item__articles-icon\">\n\t\t<svg width=\"35\" height=\"35\" viewbox=\"0 0 35 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7.17773H29.873V27.8223H24.5615C22.2237 27.8223 20.0088 28.54 18.1426 29.873H16.8574C14.9912 28.54 12.7763 27.8223 10.4385 27.8223H5.12695V5.12695H9.22852\" stroke=\"#2A5CEE\" stroke-width=\"2\" stroke-miterlimit=\"10\"\/>\n<path d=\"M9.22852 1.02539V21.6699C13.759 21.6699 17.5 25.3425 17.5 29.873V9.22852C17.5 4.698 13.759 1.02539 9.22852 1.02539Z\" stroke=\"#2A5CEE\" stroke-width=\"2\" stroke-miterlimit=\"10\"\/>\n<\/g>\n<\/svg>\n\t<\/div>\n\t<div class=\"single-item__articles-title\"><div class='heading-wrapper'><h3>Flying car and Tesla hacker on WoTS<\/h3><\/div><\/div>\n\t<div class=\"single-item__articles-terms\">\n\t\t\n\t\t\n\t\t\t\t\t\t<span class=\"button button--outline single-item__articles-term--branche single-item__articles-term\">Laboratory Technology<\/span>\n\t\t\t\t\t<\/div>\n\t<div class=\"single-item__articles-author-date-wrapper\">\n\t\t\t\t\t<div class=\"single-item__articles-author\">\n\t\t\t\tFHI, Federation of Technology Industries\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"single-item__articles-date\">\n\t\t\t\tSeptember 4, 2018\t\t\t<\/div>\n\t\t\t<\/div>\n<\/a>\n\t\t\t<\/div>\r\n\t\t<\/div>\r\n\t<\/div>","protected":false},"excerpt":{"rendered":"","protected":false},"featured_media":41250,"template":"","branches":[],"events":[60,8],"secretariat":[],"categories":[],"themes_tax":[],"content_types":[514],"class_list":["post-41249","news","type-news","status-publish","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>The choice of the right material for your busbar \u2013 Copper, Aluminium or Cuponal - FHI, federatie van technologiebranches<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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