{"id":5283,"date":"2022-08-15T08:00:00","date_gmt":"2022-08-15T07:00:00","guid":{"rendered":"https:\/\/www.first4magnets.com\/blog\/?p=5283"},"modified":"2024-09-25T11:47:26","modified_gmt":"2024-09-25T11:47:26","slug":"how-long-does-a-magnet-last","status":"publish","type":"post","link":"https:\/\/www.first4magnets.com\/blog\/how-long-does-a-magnet-last\/","title":{"rendered":"How Long Does A Magnet Last?"},"content":{"rendered":"\n<p><strong>A permanent magnet if kept and used in optimum working conditions will keep its magnetism for years. It\u2019s estimated that neodymium magnets only lose approximately 5% of their magnetism every 100 years.<\/strong><\/p>\n\n\n\n<p>Optimum working conditions include not subjecting a magnet to temperatures above its maximum operating temperatures, protecting the magnet from corrosion, and finally not subjecting them to strong demagnetising fields.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>How long will a neodymium magnet last?<\/strong><\/h2>\n\n\n\n<p>Neodymium magnets are permanent magnets and lose a fraction of their performance every 100 years if maintained within their optimum working conditions.<\/p>\n\n\n\n<p>There are two factors that can shorten a magnet\u2019s lifespan.<\/p>\n\n\n\n<p><strong>Heat<\/strong><\/p>\n\n\n\n<p>If the temperature of a magnet exceeds the maximum operating temperature, then the magnet will lose magnetism that will not be recovered on cooling. The maximum operating temperature of N42 Neodymium magnets is 80\u00b0C.<\/p>\n\n\n\n<p>Samarium Cobalt magnets are not quite as strong as Neodymium magnets but they do have a much higher operating temperature of up to 350\u00b0C.<\/p>\n\n\n\n<p><strong>Corrosion<\/strong><\/p>\n\n\n\n<p>If the plating on a magnet is damaged and water can get inside, the magnet will rust and again this will result in a deterioration in magnetic performance.<\/p>\n\n\n\n<p>Samarium Cobalt magnets and Ferrite magnets are both resistant to corrosion but aren\u2019t as strong as Neodymium magnets.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A permanent magnet if kept and used in optimum working conditions will keep its magnetism for years. Neodymium magnets only lose 5% of their magnetism every 100 years.<\/p>\n","protected":false},"author":5,"featured_media":10894,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"footnotes":""},"categories":[19,6,167],"tags":[198,642,643,644,645,646,5,8,207],"class_list":["post-5283","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-frequently-asked-questions","category-magnet-information","category-teaching-resources","tag-corrosion","tag-does-a-magnet-get-weaker","tag-does-a-magnet-get-weaker-over-time","tag-heat","tag-how-long-does-a-magnet-last","tag-how-long-will-a-neodymium-magnet-last","tag-magnet","tag-magnets","tag-temperature"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.first4magnets.com\/blog\/wp-json\/wp\/v2\/posts\/5283","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.first4magnets.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.first4magnets.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.first4magnets.com\/blog\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/www.first4magnets.com\/blog\/wp-json\/wp\/v2\/comments?post=5283"}],"version-history":[{"count":2,"href":"https:\/\/www.first4magnets.com\/blog\/wp-json\/wp\/v2\/posts\/5283\/revisions"}],"predecessor-version":[{"id":10896,"href":"https:\/\/www.first4magnets.com\/blog\/wp-json\/wp\/v2\/posts\/5283\/revisions\/10896"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.first4magnets.com\/blog\/wp-json\/wp\/v2\/media\/10894"}],"wp:attachment":[{"href":"https:\/\/www.first4magnets.com\/blog\/wp-json\/wp\/v2\/media?parent=5283"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.first4magnets.com\/blog\/wp-json\/wp\/v2\/categories?post=5283"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.first4magnets.com\/blog\/wp-json\/wp\/v2\/tags?post=5283"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}