{"id":7240,"date":"2025-08-25T11:35:08","date_gmt":"2025-08-25T09:35:08","guid":{"rendered":"https:\/\/info.formfedern.com\/the-most-common-types-of-corrosion\/"},"modified":"2025-08-25T13:42:13","modified_gmt":"2025-08-25T11:42:13","slug":"the-most-common-types-of-corrosion","status":"publish","type":"post","link":"https:\/\/info.formfedern.com\/en\/the-most-common-types-of-corrosion\/","title":{"rendered":"The most common types of corrosion"},"content":{"rendered":"<p>When it comes to,<a href=\"https:\/\/info.formfedern.com\/en\/individual-shaped-springs-and-flat-springs\/\" target=\"_blank\" rel=\"noopener noreferrer\"> Form springs<\/a> ,<a href=\"https:\/\/info.formfedern.com\/en\/flat-springs\/\" target=\"_blank\" rel=\"noopener noreferrer\"> Flat springs<\/a> ,<a href=\"https:\/\/info.formfedern.com\/en\/leaf-springs-overview\/\" target=\"_blank\" rel=\"noopener noreferrer\"> Leaf springs<\/a> and<a href=\"https:\/\/info.formfedern.com\/en\/?p=7189&amp;preview=true&amp;preview_id=7189&amp;preview=true&amp;preview_id=7189&amp;preview=true&amp;preview_id=7189\" target=\"_blank\" rel=\"noopener noreferrer\"> Laser parts<\/a> To be optimally and permanently designed for the planned use, corrosion protection is also an important issue. In addition to the technical properties of a<a href=\"https:\/\/info.formfedern.com\/?p=3847\" target=\"_blank\" rel=\"noopener noreferrer\"> Metal spring<\/a> external influences must always be taken into account before corrosion becomes a problem. Than ever<a href=\"https:\/\/de.wikipedia.org\/wiki\/Unedle_Metalle\" target=\"_blank\" rel=\"noopener noreferrer\"> the metal is less noble<\/a> , the more intense is the material destruction. During corrosion, metal in combination with oxygen turns into rust, or the metal is eroded in places. But which types of corrosion are common and which measures can help against it?<\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_79 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\/the-most-common-types-of-corrosion\/#Surface_corrosion\" >Surface corrosion<\/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\/the-most-common-types-of-corrosion\/#Well_corrosion\" >Well corrosion<\/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\/the-most-common-types-of-corrosion\/#Contact_corrosion\" >Contact corrosion<\/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\/the-most-common-types-of-corrosion\/#Pitting_corrosion\" >Pitting corrosion<\/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\/the-most-common-types-of-corrosion\/#Stress_corrosion_cracking\" >Stress corrosion cracking<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Surface_corrosion\"><\/span>Surface corrosion<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-3945\" src=\"https:\/\/info.formfedern.com\/wp-content\/uploads\/\/Flaechenkorrosion-300x120.jpg\" alt=\"Flaechenkorrosion - Gutekunst Formfedern\" width=\"340\" height=\"136\" data-wp-pid=\"3945\" srcset=\"https:\/\/info.formfedern.com\/wp-content\/uploads\/Flaechenkorrosion-300x120.jpg 300w, https:\/\/info.formfedern.com\/wp-content\/uploads\/Flaechenkorrosion-768x307.jpg 768w, https:\/\/info.formfedern.com\/wp-content\/uploads\/Flaechenkorrosion-600x240.jpg 600w, https:\/\/info.formfedern.com\/wp-content\/uploads\/Flaechenkorrosion-150x60.jpg 150w, https:\/\/info.formfedern.com\/wp-content\/uploads\/Flaechenkorrosion-500x200.jpg 500w, https:\/\/info.formfedern.com\/wp-content\/uploads\/Flaechenkorrosion-200x80.jpg 200w, https:\/\/info.formfedern.com\/wp-content\/uploads\/Flaechenkorrosion.jpg 800w\" sizes=\"auto, (max-width: 340px) 100vw, 340px\" \/>The most common form is surface corrosion. It is considered to be a less dangerous corrosive phenomenon, usually arises from the effects of the weather and is aggravated by moisture, dust or gases. It usually shows itself through its reddish color. Surface corrosion occurs on the entire surface of the material or at least on a large part of it at approximately the same speed. Here, anodic, i.e. metal-dissolving, and cathodic, electron-consuming, partial areas are formed.<\/p>\n<p>Surface corrosion can vary depending on<a href=\"https:\/\/info.formfedern.com\/en\/properties-of-spring-steel-sheets\/\" target=\"_blank\" rel=\"noopener noreferrer\"> material<\/a> also for a wanted one<a href=\"https:\/\/info.formfedern.com\/en\/surface-refinement-and-surface-coating-of-metal-springs\/\" target=\"_blank\" rel=\"noopener noreferrer\"> Passivation<\/a> the workpiece surface. The resulting top or passive layer reduces or prevents further corrosion. However, faults or damage to the passive layer lead to well corrosion at these points.<\/p>\n<p>In order to prevent surface corrosion, the right one must be used for the shaped spring, flat spring, leaf spring or laser part<a href=\"https:\/\/info.formfedern.com\/en\/?p=9541\" target=\"_blank\" rel=\"noopener noreferrer\"> material<\/a> or the right one<a href=\"https:\/\/info.formfedern.com\/oberflaechenbehandlung-metall\/\" target=\"_blank\" rel=\"noopener noreferrer\"> Surface treatment<\/a> to get voted.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Well_corrosion\"><\/span>Well corrosion<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-3948\" src=\"https:\/\/info.formfedern.com\/wp-content\/uploads\/\/Muldenkorrosion-300x120.jpg\" alt=\"Muldenkorrosion - Gutekunst Formfedern\" width=\"339\" height=\"136\" data-wp-pid=\"3948\" srcset=\"https:\/\/info.formfedern.com\/wp-content\/uploads\/Muldenkorrosion-300x120.jpg 300w, https:\/\/info.formfedern.com\/wp-content\/uploads\/Muldenkorrosion-768x308.jpg 768w, https:\/\/info.formfedern.com\/wp-content\/uploads\/Muldenkorrosion-600x241.jpg 600w, https:\/\/info.formfedern.com\/wp-content\/uploads\/Muldenkorrosion-150x60.jpg 150w, https:\/\/info.formfedern.com\/wp-content\/uploads\/Muldenkorrosion-498x200.jpg 498w, https:\/\/info.formfedern.com\/wp-content\/uploads\/Muldenkorrosion-200x80.jpg 200w, https:\/\/info.formfedern.com\/wp-content\/uploads\/Muldenkorrosion.jpg 800w\" sizes=\"auto, (max-width: 339px) 100vw, 339px\" \/>Well corrosion is a special form of surface corrosion. The anodic and cathodic areas remain stationary on the metal surface. In the case of slight irregularities in the material composition, the surface is not attacked evenly, but rather more deeply in some places. In both cases, the damage is more visual and can be identified in good time.<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Contact_corrosion\"><\/span>Contact corrosion<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-3946\" src=\"https:\/\/info.formfedern.com\/wp-content\/uploads\/\/Kontaktkorrosion-300x120.jpg\" alt=\"Kontaktkorrosion - Gutekunst Formfedern\" width=\"339\" height=\"136\" data-wp-pid=\"3946\" srcset=\"https:\/\/info.formfedern.com\/wp-content\/uploads\/Kontaktkorrosion-300x120.jpg 300w, https:\/\/info.formfedern.com\/wp-content\/uploads\/Kontaktkorrosion-768x308.jpg 768w, https:\/\/info.formfedern.com\/wp-content\/uploads\/Kontaktkorrosion-600x241.jpg 600w, https:\/\/info.formfedern.com\/wp-content\/uploads\/Kontaktkorrosion-150x60.jpg 150w, https:\/\/info.formfedern.com\/wp-content\/uploads\/Kontaktkorrosion-200x80.jpg 200w, https:\/\/info.formfedern.com\/wp-content\/uploads\/Kontaktkorrosion.jpg 800w\" sizes=\"auto, (max-width: 339px) 100vw, 339px\" \/>Contact corrosion is caused by the electrochemical reaction of two different metallic materials or other electron-conducting solids. It can occur when metals of different noble quality are in close contact via a conductive liquid, for example when a<a href=\"https:\/\/info.formfedern.com\/en\/individual-shaped-springs-and-flat-springs\/\" target=\"_blank\" rel=\"noopener noreferrer\"> Shaped spring<\/a> out<a href=\"https:\/\/info.formfedern.com\/en\/properties-of-spring-steel-sheets\/\" target=\"_blank\" rel=\"noopener noreferrer\"> stainless steel<\/a> with a galvanized steel. The more noble metal then promotes corrosion. A prerequisite for this process is a corrosive medium between the two metals, for example conductive water.<\/p>\n<p>Metals with similar corrosion potentials can avoid contact corrosion. Alternatively, the<a href=\"https:\/\/info.formfedern.com\/en\/?p=9541\" target=\"_blank\" rel=\"noopener noreferrer\"> Metals<\/a> isolate (plastic) or by a<a href=\"https:\/\/info.formfedern.com\/oberflaechenbehandlung-metall\/\" target=\"_blank\" rel=\"noopener noreferrer\"> Surface treatment<\/a> separate from each other.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Pitting_corrosion\"><\/span>Pitting corrosion<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>With pitting corrosion, cavities eat into the metal at certain points. Narrow, deep, hole-shaped corrosion pits occur when very narrowly delimited anode areas form on the metal surface, while the other areas have a cathodic effect. Pitting corrosion can occur if a more noble metallic top layer, such as a<a href=\"https:\/\/info.formfedern.com\/en\/surface-refinement-and-surface-coating-of-metal-springs\/\" target=\"_blank\" rel=\"noopener noreferrer\"> Chrome plating<\/a> , is broken by mechanical damage or when chloride or bromide ions displace oxygen from the oxide layer of a passivated metal.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-3947\" src=\"https:\/\/info.formfedern.com\/wp-content\/uploads\/\/Lochkorrosion-300x120.jpg\" alt=\"Lochkorrosion - Gutekunst Formfedern\" width=\"340\" height=\"136\" data-wp-pid=\"3947\" srcset=\"https:\/\/info.formfedern.com\/wp-content\/uploads\/Lochkorrosion-300x120.jpg 300w, https:\/\/info.formfedern.com\/wp-content\/uploads\/Lochkorrosion-768x307.jpg 768w, https:\/\/info.formfedern.com\/wp-content\/uploads\/Lochkorrosion-600x240.jpg 600w, https:\/\/info.formfedern.com\/wp-content\/uploads\/Lochkorrosion-150x60.jpg 150w, https:\/\/info.formfedern.com\/wp-content\/uploads\/Lochkorrosion-500x200.jpg 500w, https:\/\/info.formfedern.com\/wp-content\/uploads\/Lochkorrosion-200x80.jpg 200w, https:\/\/info.formfedern.com\/wp-content\/uploads\/Lochkorrosion.jpg 800w\" sizes=\"auto, (max-width: 340px) 100vw, 340px\" \/>If, for example, chloride ions are contained in the water, then stainless steel in particular is affected by pitting corrosion. The cause of copper pitting corrosion can be more noble metals or grains of sand, which are deposited on the copper by contaminated water and destroy the material at these points. Since pitting corrosion is often noticed relatively late, it can cause great damage.<\/p>\n<p>The use of spring steels made from a chromium and molybdenum alloy, for example<a href=\"https:\/\/info.formfedern.com\/en\/properties-of-spring-steel-sheets\/\" target=\"_blank\" rel=\"noopener noreferrer\"> Chrome-nickel-molybdenum steel X5CrNiMo17-12-2 \/ 1.4401<\/a> , can counteract pitting corrosion.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Stress_corrosion_cracking\"><\/span>Stress corrosion cracking<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Stress corrosion cracking occurs under static loads, especially tensile and internal stresses below the yield point.<a href=\"https:\/\/info.formfedern.com\/en\/offer-drawing-parts\/\" target=\"_blank\" rel=\"noopener noreferrer\"> Metal parts<\/a> are at risk when a corrosive medium affects a susceptible and reactive material such as<a href=\"https:\/\/info.formfedern.com\/en\/properties-of-spring-steel-sheets\/\" target=\"_blank\" rel=\"noopener noreferrer\"> Chrome-nickel steels<\/a> or<a href=\"https:\/\/info.formfedern.com\/en\/properties-of-spring-steel-sheets\/\" target=\"_blank\" rel=\"noopener noreferrer\"> Copper-zinc alloys<\/a> acts under tension. Components that are exposed to salt water or chemical loads are often affected by stress corrosion cracking.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-3956\" src=\"https:\/\/info.formfedern.com\/wp-content\/uploads\/\/Spannungskorrosion-1-300x120.jpg\" alt=\"Spannungsrisskorrosion - Gutekunst Formfedern\" width=\"339\" height=\"136\" data-wp-pid=\"3956\" srcset=\"https:\/\/info.formfedern.com\/wp-content\/uploads\/Spannungskorrosion-1-300x120.jpg 300w, https:\/\/info.formfedern.com\/wp-content\/uploads\/Spannungskorrosion-1-768x308.jpg 768w, https:\/\/info.formfedern.com\/wp-content\/uploads\/Spannungskorrosion-1-600x241.jpg 600w, https:\/\/info.formfedern.com\/wp-content\/uploads\/Spannungskorrosion-1-150x60.jpg 150w, https:\/\/info.formfedern.com\/wp-content\/uploads\/Spannungskorrosion-1-498x200.jpg 498w, https:\/\/info.formfedern.com\/wp-content\/uploads\/Spannungskorrosion-1-200x80.jpg 200w, https:\/\/info.formfedern.com\/wp-content\/uploads\/Spannungskorrosion-1.jpg 800w\" sizes=\"auto, (max-width: 339px) 100vw, 339px\" \/>After a period of rest, micro-cracks form that cannot be seen with the naked eye. The cracks continue to spread perpendicular to the tensile stress. These micro-notches have increased stresses at the notch base, through which they are plastically deformed. Since the notches are less noble than the material surrounding them, material is also removed anodically. The stress in the notch base increases steadily and ultimately leads to breakage and thus component failure without warning.<\/p>\n<p>To prevent stress corrosion cracking, the tensile stress acting on the metal must be reduced and the<a href=\"https:\/\/info.formfedern.com\/en\/?p=9541\" target=\"_blank\" rel=\"noopener noreferrer\"> correct spring material<\/a> to get voted.<\/p>\n<p><strong>Corrosion protection with Gutekunst form springs<\/strong><\/p>\n<p>You would like more information on the appropriate corrosion protection or need advice on the right one<a href=\"https:\/\/info.formfedern.com\/en\/?p=9541\" target=\"_blank\" rel=\"noopener noreferrer\"> Spring material<\/a> or<a href=\"https:\/\/info.formfedern.com\/oberflaechenbehandlung-metall\/\" target=\"_blank\" rel=\"noopener noreferrer\"> Surface treatment<\/a> for your<a href=\"https:\/\/info.formfedern.com\/en\/individual-shaped-springs-and-flat-springs\/\" target=\"_blank\" rel=\"noopener noreferrer\"> Shaped spring<\/a> ,<a href=\"https:\/\/info.formfedern.com\/en\/leaf-springs-overview\/\" target=\"_blank\" rel=\"noopener noreferrer\"> Leaf spring<\/a> ,<a href=\"https:\/\/info.formfedern.com\/en\/individual-contact-springs\/\" target=\"_blank\" rel=\"noopener noreferrer\"> Contact spring<\/a> ,<a href=\"https:\/\/info.formfedern.com\/en\/flat-springs\/\" target=\"_blank\" rel=\"noopener noreferrer\"> Flat spring<\/a> , Your<a href=\"https:\/\/info.formfedern.com\/en\/?p=7189&amp;preview=true&amp;preview_id=7189&amp;preview=true&amp;preview_id=7189&amp;preview=true&amp;preview_id=7189\" target=\"_blank\" rel=\"noopener noreferrer\"> Laser part<\/a> or your<a href=\"https:\/\/info.formfedern.com\/en\/properties-stamped-bent-parts\/\" target=\"_blank\" rel=\"noopener noreferrer\"> Stamped and bent part<\/a> ? Then contact our experts. The engineering department of<a href=\"https:\/\/info.formfedern.com\/en\/welcome-to-gutekunst-formfedern-gmbh\/\"> Gutekunst Formfedern GmbH<\/a> can be reached by phone at (+49) 07445 8516-30 or by e-mail to:<a href=\"mailto:info@gutekunst-formfedern.de\"> info@gutekunst-formfedern.de<\/a><\/p>\n<p>&nbsp;<\/p>\n<p><em>For more information:<\/em><\/p>\n<ul>\n<li><a href=\"https:\/\/info.formfedern.com\/en\/properties-of-spring-steel-sheets\/\" target=\"_blank\" rel=\"noopener noreferrer\">Properties of spring steel sheets<\/a><\/li>\n<\/ul>\n<ul>\n<li><a href=\"https:\/\/info.formfedern.com\/verwendung-federstahl-und-oberflaechenbehandlung\/\" target=\"_blank\" rel=\"noopener noreferrer\">Use of spring steels and surface treatments<\/a><\/li>\n<\/ul>\n<ul>\n<li><a href=\"https:\/\/info.formfedern.com\/en\/surface-refinement-and-surface-coating-of-metal-springs\/\" target=\"_blank\" rel=\"noopener noreferrer\">Surface finishing for shaped springs, spring clips, stamped and bent parts and laser parts<\/a><\/li>\n<\/ul>\n<ul>\n<li><a href=\"https:\/\/info.formfedern.com\/en\/electrically-conductive-surface-treatments\/\" target=\"_blank\" rel=\"noopener noreferrer\">Conductive surface treatments<\/a><\/li>\n<\/ul>\n<ul>\n<li><a href=\"https:\/\/info.formfedern.com\/?p=3847\" target=\"_blank\" rel=\"noopener noreferrer\">Metal springs applications<\/a><\/li>\n<\/ul>\n<p>&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<p>When it comes to, Form springs , Flat springs , Leaf springs and Laser parts To be optimally and permanently designed for the planned use, corrosion protection is also an important issue. In addition to the technical properties of a<\/p>\n","protected":false},"author":6,"featured_media":7246,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[827,701,708,707],"tags":[1324,2082,837,1369,936,2077,2083,835,2078,2084,2080,2079,2081],"class_list":["post-7240","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry-en","category-knowledge","category-leaf-springs","category-material-en","tag-blattfeder-en","tag-contact-corrosion","tag-flat-springs","tag-gutekunst-formfedern-en","tag-kontaktfedern-en","tag-laser-part","tag-pitting-corrosion","tag-shaped-springs","tag-stamped-and-bent-part","tag-stress-corrosion-cracking","tag-surface-corrosion","tag-types-of-corrosion","tag-well-corrosion"],"_links":{"self":[{"href":"https:\/\/info.formfedern.com\/en\/wp-json\/wp\/v2\/posts\/7240","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=7240"}],"version-history":[{"count":5,"href":"https:\/\/info.formfedern.com\/en\/wp-json\/wp\/v2\/posts\/7240\/revisions"}],"predecessor-version":[{"id":11824,"href":"https:\/\/info.formfedern.com\/en\/wp-json\/wp\/v2\/posts\/7240\/revisions\/11824"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/info.formfedern.com\/en\/wp-json\/wp\/v2\/media\/7246"}],"wp:attachment":[{"href":"https:\/\/info.formfedern.com\/en\/wp-json\/wp\/v2\/media?parent=7240"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/info.formfedern.com\/en\/wp-json\/wp\/v2\/categories?post=7240"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/info.formfedern.com\/en\/wp-json\/wp\/v2\/tags?post=7240"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}