{"id":5633,"date":"2026-05-18T00:30:02","date_gmt":"2026-05-17T22:30:02","guid":{"rendered":"https:\/\/info.formfedern.com\/conductivity-metals\/"},"modified":"2026-05-19T14:19:06","modified_gmt":"2026-05-19T12:19:06","slug":"conductivity-metals","status":"publish","type":"post","link":"https:\/\/info.formfedern.com\/en\/conductivity-metals\/","title":{"rendered":"Conductivity metals"},"content":{"rendered":"<p><img class=\"alignnone size-medium wp-image-7316\" alt=\"\" data-wp-pid=\"7316\" \/><img loading=\"lazy\" decoding=\"async\" class=\"alignright wp-image-837\" src=\"https:\/\/info.formfedern.com\/wp-content\/uploads\/\/Blattfeder-300x300.jpg\" alt=\"Kontaktfeder von Gutekunst Formfedern\" width=\"400\" height=\"400\" data-wp-pid=\"837\" srcset=\"https:\/\/info.formfedern.com\/wp-content\/uploads\/Blattfeder-300x300.jpg 300w, https:\/\/info.formfedern.com\/wp-content\/uploads\/Blattfeder-150x150.jpg 150w, https:\/\/info.formfedern.com\/wp-content\/uploads\/Blattfeder-200x200.jpg 200w, https:\/\/info.formfedern.com\/wp-content\/uploads\/Blattfeder.jpg 600w, https:\/\/info.formfedern.com\/wp-content\/uploads\/Blattfeder-270x270.jpg 270w, https:\/\/info.formfedern.com\/wp-content\/uploads\/Blattfeder-230x230.jpg 230w\" sizes=\"auto, (max-width: 400px) 100vw, 400px\" \/>Every material has a certain conductivity. So-called non-conductors, electrical insulating materials and insulators also conduct electricity, albeit in negligible amounts. It looks different with<a href=\"https:\/\/info.formfedern.com\/en\/properties-of-spring-steel-sheets\/\" target=\"_blank\" rel=\"noopener noreferrer\"> Metals<\/a> out. Most metals are good conductors. Your<a href=\"https:\/\/de.wikipedia.org\/wiki\/Elektrische_Leitf%C3%A4higkeit\" target=\"_blank\" rel=\"noopener noreferrer\"> conductivity<\/a> depends on the availability and density of mobile charge carriers. To put it simply: the more freely movable charge carriers there are in a metal, the better it conducts the electrical current.<\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_83 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/info.formfedern.com\/en\/conductivity-metals\/#Use_of_conductive_metals\" >Use of conductive metals<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/info.formfedern.com\/en\/conductivity-metals\/#Electrical_conductivity_of_various_metals\" >Electrical conductivity of various metals<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/info.formfedern.com\/en\/conductivity-metals\/#Contact_springs_made_of_copper_beryllium_CuBe\" >Contact springs made of copper beryllium (CuBe)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/info.formfedern.com\/en\/conductivity-metals\/#Contact_springs_made_from_other_metals\" >Contact springs made from other metals<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/info.formfedern.com\/en\/conductivity-metals\/#Individual_development_and_manufacturing\" >Individual development and manufacturing<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/info.formfedern.com\/en\/conductivity-metals\/#Benefit_from_the_new_Formfedern_store\" >Benefit from the new Formfedern store<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Use_of_conductive_metals\"><\/span>Use of conductive metals<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>We know two different uses for electricity: the transmission of energy and information. Both cases have one thing in common: You need electrical conductors with you<a href=\"https:\/\/info.formfedern.com\/en\/lasering-punching-forming-and-assembling\/\" target=\"_blank\" rel=\"noopener noreferrer\"> specific shape<\/a> and individual properties. Usually come for it<a href=\"https:\/\/info.formfedern.com\/en\/individual-contact-springs\/\" target=\"_blank\" rel=\"noopener noreferrer\"> Contact springs<\/a> are used, which are available in an almost infinite number of variants and designs. They bridge and close contact points to enable the flow of electricity, for example with one<a href=\"https:\/\/info.formfedern.com\/en\/battery-contacts-individual\/\" target=\"_blank\" rel=\"noopener noreferrer\"> Battery contact<\/a> .<\/p>\n<p><a href=\"https:\/\/info.formfedern.com\/en\/welcome-to-gutekunst-formfedern-gmbh\/\">Gutekunst Formfedern GmbH<\/a> specializes in the manufacture of such individual contact springs and manufactures them in any special shape and property. It does not matter whether it is a simple one<a href=\"https:\/\/info.formfedern.com\/en\/form-springs-leaf-springs-and-flat-springs\/\"> Flat contact<\/a> or an elaborately shaped one<a href=\"https:\/\/info.formfedern.com\/en\/individual-contact-springs\/\" target=\"_blank\" rel=\"noopener noreferrer\"> Contact spring<\/a> acts &#8211; it is important that the element is optimally adapted to the requirements and that it rests firmly on the contact points.<\/p>\n<h2>Electrical conductivity of various metals<strong><br \/>\n<\/strong><\/h2>\n<p>The physical size specification &#8220;electrical conductivity of metals&#8221; has the symbol sigma (\u03c3) and is measured in Siemens per meter (S \/ m). Its reciprocal value, the specific resistance \u03a9 (omega) is given in microohms per meter (m).<\/p>\n<p>The formula for<a href=\"https:\/\/de.wikipedia.org\/wiki\/Elektrische_Leitf%C3%A4higkeit\" target=\"_blank\" rel=\"noopener noreferrer\"> electric conductivity<\/a> is defined as the constant of proportionality between the current density and the electric field strength:<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-5636\" src=\"https:\/\/info.formfedern.com\/wp-content\/uploads\/Leitfaehigkeit_Metalle_Formel.jpg\" alt=\"Leitfaehigkeit Metalle Formel | J \u20d1= \u03c3 E \u20d1\" width=\"120\" height=\"52\" data-wp-pid=\"3498\" \/><\/p>\n<p><strong>Electrical conductivity and specific resistance of selected metals at 20 to 25 \u00b0 C<\/strong><\/p>\n<table width=\"489\">\n<tbody>\n<tr>\n<td colspan=\"3\" width=\"489\">Attention: The degree of purity of the metals can influence the electrical conductivity.<\/td>\n<\/tr>\n<tr>\n<td><strong>material <\/strong><\/td>\n<td><strong>Conductivity \u03c3 in S \/ m <\/strong><\/td>\n<td><strong>Resistance \u03a9 in m<\/strong><\/td>\n<\/tr>\n<tr>\n<td>silver<\/td>\n<td>61 \u00b7 10<sup> 6th<\/sup><\/td>\n<td>0.0160 x 10<sup> -6<\/sup><\/td>\n<\/tr>\n<tr>\n<td>copper<\/td>\n<td>58 \u00b7 10<sup> 6th<\/sup><\/td>\n<td>0.0175 x 10<sup> -6<\/sup><\/td>\n<\/tr>\n<tr>\n<td>gold<\/td>\n<td>45 \u00b7 10<sup> 6th<\/sup><\/td>\n<td>0.0220 x 10<sup> -6<\/sup><\/td>\n<\/tr>\n<tr>\n<td>aluminum<\/td>\n<td>37 \u00b7 10<sup> 6th<\/sup><\/td>\n<td>0.0270 x 10<sup> -6<\/sup><\/td>\n<\/tr>\n<tr>\n<td>tungsten<\/td>\n<td>19 \u00b7 10<sup> 6th<\/sup><\/td>\n<td>0.0550 x 10<sup> -6<\/sup><\/td>\n<\/tr>\n<tr>\n<td>iron<\/td>\n<td>10 \u00b7 10<sup> 6th<\/sup><\/td>\n<td>0.1000 x 10<sup> -6<\/sup><\/td>\n<\/tr>\n<tr>\n<td>Edelstahl<\/td>\n<td>1.4 x 10<sup> 6th<\/sup><\/td>\n<td>1.0000 10<sup> -6<\/sup><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Silver, copper and gold share the winners&#8217; podium.<a href=\"https:\/\/info.formfedern.com\/aluminium-laserschneiden\/\" target=\"_blank\" rel=\"noopener noreferrer\"> aluminum<\/a> reaches around 65 percent of the conductivity of copper, so it is a good electrical conductor, but only comes in fourth. The bottom light of the table with the lowest conductance is the<a href=\"https:\/\/info.formfedern.com\/en\/laser-parts-made-of-stainless-steel\/\" target=\"_blank\" rel=\"noopener noreferrer\"> stainless steel<\/a> .<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Contact_springs_made_of_copper_beryllium_CuBe\"><\/span>Contact springs made of copper beryllium (CuBe)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Due to their high price, silver and gold are rarely used as raw materials for contact springs. Often times these are made out instead<a href=\"https:\/\/info.formfedern.com\/en\/copper-beryllium-cube-properties\/\"> Copper beryllium (CuBe)<\/a> manufactured. This is characterized by its high strength and excellent spring properties. The material is also self-cleaning and resistant to air, ozone, solvents and UV light. It can even withstand nuclear radiation. In addition is<a href=\"https:\/\/info.formfedern.com\/en\/copper-beryllium-cube-properties\/\"> CuBe<\/a> thermally and electrically conductive.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Contact_springs_made_from_other_metals\"><\/span>Contact springs made from other metals<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>In addition to copper beryllium (CuBe) can<a href=\"https:\/\/info.formfedern.com\/en\/individual-contact-springs\/\" target=\"_blank\" rel=\"noopener noreferrer\"> Contact springs<\/a> Depending on the application and properties, there are also numerous others<a href=\"https:\/\/info.formfedern.com\/en\/properties-of-spring-steel-sheets\/\"> Metals<\/a> are manufactured. Spring steel (EN 10270-1), stainless steel (1.4310, 1.4571 and 1.4568), aluminum (Al and AlMg3), non-ferrous metal alloys such as bronze (CuSn) or brass (CuZn) as well as numerous special alloys are possible.<\/p>\n<p>To improve conductivity, Gutekunst can use the<a href=\"https:\/\/info.formfedern.com\/en\/surface-refinement-and-surface-coating-of-metal-springs\/\" target=\"_blank\" rel=\"noopener noreferrer\"> surfaces<\/a> Coat the manufactured components with zinc (Zn), copper (Cu), nickel (Ni), silver (Ag) or gold (Au) or passivate the springs. This improves the contact and the components can be processed more easily. The different coatings give them different properties. With gold, for example, resistance to most acids and very good surface protection can be achieved. If the user needs a component that can be welded or soldered well and reliably, coatings with zinc or gold are the right choice.<\/p>\n<h2>Individual development and manufacturing<strong><br \/>\n<\/strong><\/h2>\n<p>You need the right one<a href=\"https:\/\/info.formfedern.com\/en\/individual-contact-springs\/\" target=\"_blank\" rel=\"noopener noreferrer\"> Contact spring<\/a> or one<a href=\"https:\/\/info.formfedern.com\/en\/battery-contacts-individual\/\" target=\"_blank\" rel=\"noopener noreferrer\"> special battery contact<\/a> for your application? Then send your CAD data, a drawing or a sketch, as well as information on the installation situation, operational environment and the desired function via the following<a href=\"https:\/\/info.formfedern.com\/en\/request-contact-springs-and-battery-contacts\/\" target=\"_blank\" rel=\"noopener noreferrer\"> Inquiry button contact springs<\/a> or at<a href=\"mailto:info@gutekunst-formfedern.de\" target=\"_blank\" rel=\"noopener noreferrer\"> info@gutekunst-formfedern.de<\/a> . You can also reach our technical department by phone at (+49) 07445 8516-0.<\/p>\n<a class=\"maxbutton-8 maxbutton maxbutton-spring-request-en\" target=\"_blank\" rel=\"noopener\" href=\"\/en\/spring-request\/\"><span class='mb-text'>Spring request<\/span><\/a>\n<h2><\/h2>\n<h2><span class=\"ez-toc-section\" id=\"Benefit_from_the_new_Formfedern_store\"><\/span>Benefit from the new Formfedern store<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>The new form spring store from Gutekunst Formfedern offers several advantages in the procurement of form springs, flat springs, laser parts and sheet metal parts. Thanks to its simple operation, transparent online price calculation and fast digital processing, it is a real support for designers, technicians and purchasers. At last, it is possible to configure, calculate prices, make inquiries and place orders for tailor-made formed metal parts in an uncomplicated and time-saving manner \u2013 around the clock and with maximum transparency.<\/p>\n<p>Try it out for yourself at <a href=\"https:\/\/shop.formfedern.com\">https:\/\/shop.formfedern.com<\/a><\/p>\n<p><span class=\"mb-text\"><a class=\"maxbutton-23 maxbutton maxbutton-form-springs-shop\" target=\"_blank\" title=\"Form Springs Shop\" rel=\"noopener\" href=\"https:\/\/shop.formfedern.com\/en\/\"><span class='mb-text'>Form Springs Shop<\/span><\/a> <\/span><\/p>\n<p>&nbsp;<\/p>\n<p><em>For more information:<\/em><\/p>\n<ul>\n<li><a href=\"https:\/\/info.formfedern.com\/en\/lasering-punching-forming-and-assembling\/\" target=\"_blank\" rel=\"noopener noreferrer\">Lasering, punching, forming and assembling<\/a><\/li>\n<\/ul>\n<ul>\n<li><a href=\"https:\/\/info.formfedern.com\/en\/individual-contact-springs\/\" target=\"_blank\" rel=\"noopener noreferrer\">Individual contact springs<\/a><\/li>\n<\/ul>\n<ul>\n<li><a href=\"https:\/\/info.formfedern.com\/en\/battery-contacts-individual\/\" target=\"_blank\" rel=\"noopener noreferrer\">Made-to-measure battery contacts<\/a><\/li>\n<\/ul>\n<ul>\n<li><a href=\"https:\/\/info.formfedern.com\/en\/laser-parts-in-express-production\/\">Order laser parts quickly and easily<\/a><\/li>\n<\/ul>\n<ul>\n<li><a href=\"https:\/\/info.formfedern.com\/en\/production-of-stamped-and-bent-parts\/?preview=true&#038;preview_id=8426&#038;preview=true&#038;preview_id=8426\" target=\"_blank\" rel=\"noopener noreferrer\">Production of stamped and bent parts<\/a><\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>Every material has a certain conductivity. So-called non-conductors, electrical insulating materials and insulators also conduct electricity, albeit in negligible amounts. It looks different with Metals out. Most metals are good conductors. Your conductivity depends on the availability and density of<\/p>\n","protected":false},"author":6,"featured_media":5638,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[827,701,708,707],"tags":[983,987,937,984,936,990,985,988,986,989,991],"class_list":["post-5633","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry-en","category-knowledge","category-leaf-springs","category-material-en","tag-aluminium-en","tag-batteriekontakt-en","tag-edelstahl-en","tag-flachkontakt-en","tag-kontaktfedern-en","tag-kupfer-en","tag-leitfaehigkeit-en","tag-leitwert-en","tag-metalle-en","tag-silber-en","tag-spezifischer-widerstand-en"],"_links":{"self":[{"href":"https:\/\/info.formfedern.com\/en\/wp-json\/wp\/v2\/posts\/5633","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/info.formfedern.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/info.formfedern.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/info.formfedern.com\/en\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/info.formfedern.com\/en\/wp-json\/wp\/v2\/comments?post=5633"}],"version-history":[{"count":11,"href":"https:\/\/info.formfedern.com\/en\/wp-json\/wp\/v2\/posts\/5633\/revisions"}],"predecessor-version":[{"id":12241,"href":"https:\/\/info.formfedern.com\/en\/wp-json\/wp\/v2\/posts\/5633\/revisions\/12241"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/info.formfedern.com\/en\/wp-json\/wp\/v2\/media\/5638"}],"wp:attachment":[{"href":"https:\/\/info.formfedern.com\/en\/wp-json\/wp\/v2\/media?parent=5633"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/info.formfedern.com\/en\/wp-json\/wp\/v2\/categories?post=5633"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/info.formfedern.com\/en\/wp-json\/wp\/v2\/tags?post=5633"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}