{"id":2530,"date":"2023-02-04T02:00:47","date_gmt":"2023-02-04T02:00:47","guid":{"rendered":"https:\/\/hsmagnet.com\/?p=2530"},"modified":"2025-09-01T06:11:46","modified_gmt":"2025-09-01T06:11:46","slug":"comment-selectionner-les-qualites-de-materiaux-pour-les-aimants-en-neodyme","status":"publish","type":"post","link":"https:\/\/hsmagnet.com\/fr\/2023\/02\/04\/how-to-select-material-grades-for-neodymium-magnets\/","title":{"rendered":"Comment s\u00e9lectionner les qualit\u00e9s de mat\u00e9riaux pour les aimants en n\u00e9odyme\u00a0?"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">When you see designations such as <strong>N35, N42, or N52<\/strong>, these numbers represent the <strong>grade<\/strong> of a neodymium magnet. The grade indicates the <strong>maximum energy product (BH)max<\/strong>, measured in MGOe, which reflects the strength of the magnet.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Higher numbers (e.g., N52) indicate stronger magnets at room temperature.<\/li>\n\n\n\n<li>Lower numbers (e.g., N35) are less powerful but more cost-effective.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Understanding these ratings is the first step in choosing the right magnet for your application.<\/p>\n\n\n\n<!--more-->\n\n\n<div class=\"root-eb-toc-86gbz wp-block-essential-blocks-table-of-contents\"><div class=\"eb-parent-wrapper eb-parent-eb-toc-86gbz \"><div class=\"eb-toc-container eb-toc-86gbz  eb-toc-is-not-sticky eb-toc-not-collapsible eb-toc-initially-not-collapsed eb-toc-scrollToTop style-1 list-style-none\" data-scroll-top=\"false\" data-scroll-top-icon=\"fas fa-angle-up\" data-collapsible=\"false\" data-sticky-hide-mobile=\"false\" data-sticky=\"false\" data-scroll-target=\"scroll_to_toc\" data-copy-link=\"false\" data-editor-type=\"\" data-hide-desktop=\"false\" data-hide-tab=\"false\" data-hide-mobile=\"false\" data-itemcollapsed=\"false\" data-highlight-scroll=\"false\"><div class=\"eb-toc-header\"><h2 class=\"eb-toc-title\">Table of Contents<\/h2><\/div><div class=\"eb-toc-wrapper \" data-headers=\"[{&quot;level&quot;:2,&quot;content&quot;:&quot;How Are Neodymium Magnet Grades Determined?&quot;,&quot;text&quot;:&quot;How Are Neodymium Magnet Grades Determined?&quot;,&quot;link&quot;:&quot;how-are-neodymium-magnet-grades-determined&quot;},{&quot;level&quot;:2,&quot;content&quot;:&quot;Common N Grades and Temperature Ratings&quot;,&quot;text&quot;:&quot;Common N Grades and Temperature Ratings&quot;,&quot;link&quot;:&quot;common-n-grades-and-temperature-ratings&quot;},{&quot;level&quot;:2,&quot;content&quot;:&quot;Which Grade Should You Choose?&quot;,&quot;text&quot;:&quot;Which Grade Should You Choose?&quot;,&quot;link&quot;:&quot;which-grade-should-you-choose&quot;},{&quot;level&quot;:2,&quot;content&quot;:&quot;Understanding the BH Curve&quot;,&quot;text&quot;:&quot;Understanding the BH Curve&quot;,&quot;link&quot;:&quot;understanding-the-bh-curve&quot;},{&quot;level&quot;:2,&quot;content&quot;:&quot;Customization Options&quot;,&quot;text&quot;:&quot;Customization Options&quot;,&quot;link&quot;:&quot;customization-options&quot;},{&quot;level&quot;:2,&quot;content&quot;:&quot;Conclusion&quot;,&quot;text&quot;:&quot;Conclusion&quot;,&quot;link&quot;:&quot;conclusion&quot;}]\" data-visible=\"[true,true,true,true,true,true]\" data-delete-headers=\"[{&quot;label&quot;:&quot;How Are Neodymium Magnet Grades Determined?&quot;,&quot;value&quot;:&quot;how-are-neodymium-magnet-grades-determined&quot;,&quot;isDelete&quot;:false},{&quot;label&quot;:&quot;Common N Grades and Temperature Ratings&quot;,&quot;value&quot;:&quot;common-n-grades-and-temperature-ratings&quot;,&quot;isDelete&quot;:false},{&quot;label&quot;:&quot;Which Grade Should You Choose?&quot;,&quot;value&quot;:&quot;which-grade-should-you-choose&quot;,&quot;isDelete&quot;:false},{&quot;label&quot;:&quot;Understanding the BH Curve&quot;,&quot;value&quot;:&quot;understanding-the-bh-curve&quot;,&quot;isDelete&quot;:false},{&quot;label&quot;:&quot;Customization Options&quot;,&quot;value&quot;:&quot;customization-options&quot;,&quot;isDelete&quot;:false},{&quot;label&quot;:&quot;Conclusion&quot;,&quot;value&quot;:&quot;conclusion&quot;,&quot;isDelete&quot;:false}]\" data-smooth=\"true\" data-top-offset=\"\"><div class=\"eb-toc__list-wrap\"><ul class=\"eb-toc__list\"><li><a href=\"#how-are-neodymium-magnet-grades-determined\">How Are Neodymium Magnet Grades Determined?<\/a><li><a href=\"#common-n-grades-and-temperature-ratings\">Common N Grades and Temperature Ratings<\/a><li><a href=\"#which-grade-should-you-choose\">Which Grade Should You Choose?<\/a><li><a href=\"#understanding-the-bh-curve\">Understanding the BH Curve<\/a><li><a href=\"#customization-options\">Customization Options<\/a><li><a href=\"#conclusion\">Conclusion<\/a><\/ul><\/div><\/div><\/div><\/div><\/div>\n\n\n<h2 class=\"wp-block-heading\">How Are Neodymium Magnet Grades Determined?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The grade of a magnet is directly influenced by its <strong>manufacturing process<\/strong>:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Raw Material Ratio<\/strong> \u2013 Neodymium, iron, and boron are blended in specific proportions.<\/li>\n\n\n\n<li><strong>Melting and Alloying<\/strong> \u2013 Elements are melted into an alloy that influences final strength.<\/li>\n\n\n\n<li><strong>Powdering and Mixing<\/strong> \u2013 Controlled mixing ensures consistency in magnetic properties.<\/li>\n\n\n\n<li><strong>Compression and Sintering<\/strong> \u2013 Determines density and energy capacity.<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">Each step impacts the final <strong>BH curve<\/strong> of the magnet, ultimately defining its N rating.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Common N Grades and Temperature Ratings<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Different industries require magnets that perform reliably under specific conditions. Neodymium magnets are available in a wide range of grades, each with corresponding <strong>maximum operating temperatures<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>N35\u2013N52<\/strong>: Standard grades, ideal for room temperature use.<\/li>\n\n\n\n<li><strong>M, H, SH Grades<\/strong>: Withstand <strong>100\u00b0C\u2013150\u00b0C<\/strong>.<\/li>\n\n\n\n<li><strong>UH, EH Grades<\/strong>: Suitable for <strong>180\u00b0C\u2013200\u00b0C<\/strong>.<\/li>\n\n\n\n<li><strong>AH Grades<\/strong>: Can perform up to <strong>220\u00b0C<\/strong>.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">This makes grade selection critical for industries such as <strong>automotive, renewable energy, electronics, and medical equipment<\/strong>.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/hsmagnet.com\/wp-content\/uploads\/2023\/02\/Comparison-chart-showing-neodymium-magnet-grades-N35-to-N52-with-maximum-operating-temperatures-1024x683.webp\" alt=\"Comparison chart showing neodymium magnet grades N35 to N52 with maximum operating temperatures.\" class=\"wp-image-13505\" srcset=\"https:\/\/hsmagnet.com\/wp-content\/uploads\/2023\/02\/Comparison-chart-showing-neodymium-magnet-grades-N35-to-N52-with-maximum-operating-temperatures-1024x683.webp 1024w, https:\/\/hsmagnet.com\/wp-content\/uploads\/2023\/02\/Comparison-chart-showing-neodymium-magnet-grades-N35-to-N52-with-maximum-operating-temperatures-300x200.webp 300w, https:\/\/hsmagnet.com\/wp-content\/uploads\/2023\/02\/Comparison-chart-showing-neodymium-magnet-grades-N35-to-N52-with-maximum-operating-temperatures-768x512.webp 768w, https:\/\/hsmagnet.com\/wp-content\/uploads\/2023\/02\/Comparison-chart-showing-neodymium-magnet-grades-N35-to-N52-with-maximum-operating-temperatures-600x400.webp 600w, https:\/\/hsmagnet.com\/wp-content\/uploads\/2023\/02\/Comparison-chart-showing-neodymium-magnet-grades-N35-to-N52-with-maximum-operating-temperatures.webp 1536w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Which Grade Should You Choose?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Selecting the right grade depends on the <strong>application requirements<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Maximum Strength at Room Temperature<\/strong> \u2192 N52<\/li>\n\n\n\n<li><strong>Balanced Performance and Cost<\/strong> \u2192 N42 (widely used across industries)<\/li>\n\n\n\n<li><strong>High-Temperature Environments<\/strong> \u2192 UH or EH grades (reliable up to 200\u00b0C)<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udc49 For example:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A <strong>motor manufacturer<\/strong> may prefer N42 for efficiency and cost balance.<\/li>\n\n\n\n<li>A <strong>medical device company<\/strong> may choose N52 for miniaturization.<\/li>\n\n\n\n<li>A <strong>renewable energy system<\/strong> may require EH grades for long-term heat resistance.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Understanding the BH Curve<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The <strong>BH curve<\/strong> (demagnetization curve) is a crucial tool for engineers:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>It shows how the magnet performs under different external conditions.<\/li>\n\n\n\n<li>The <strong>maximum energy product (BH)max<\/strong> represents the magnet\u2019s potential strength.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">By analyzing the BH curve, manufacturers can recommend the most suitable grade for your technical requirements.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/hsmagnet.com\/wp-content\/uploads\/2023\/02\/Demagnetization-curve-BH-curve-illustrating-maximum-energy-product-BHmax-for-NdFeB-magnets-1024x683.webp\" alt=\"Demagnetization curve (BH curve) illustrating maximum energy product (BHmax) for NdFeB magnets.\" class=\"wp-image-13507\" srcset=\"https:\/\/hsmagnet.com\/wp-content\/uploads\/2023\/02\/Demagnetization-curve-BH-curve-illustrating-maximum-energy-product-BHmax-for-NdFeB-magnets-1024x683.webp 1024w, https:\/\/hsmagnet.com\/wp-content\/uploads\/2023\/02\/Demagnetization-curve-BH-curve-illustrating-maximum-energy-product-BHmax-for-NdFeB-magnets-300x200.webp 300w, https:\/\/hsmagnet.com\/wp-content\/uploads\/2023\/02\/Demagnetization-curve-BH-curve-illustrating-maximum-energy-product-BHmax-for-NdFeB-magnets-768x512.webp 768w, https:\/\/hsmagnet.com\/wp-content\/uploads\/2023\/02\/Demagnetization-curve-BH-curve-illustrating-maximum-energy-product-BHmax-for-NdFeB-magnets-600x400.webp 600w, https:\/\/hsmagnet.com\/wp-content\/uploads\/2023\/02\/Demagnetization-curve-BH-curve-illustrating-maximum-energy-product-BHmax-for-NdFeB-magnets.webp 1536w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Customization Options<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">At <a href=\"https:\/\/hsmagnet.com\/\">HSMagnet<\/a>, we provide <strong>customized neodymium magnets<\/strong> based on your:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Desired <strong>grade<\/strong> (N35 to N52, M\/H\/SH\/UH\/EH\/AH)<\/li>\n\n\n\n<li>Required <strong>size and shape<\/strong><\/li>\n\n\n\n<li><strong>Temperature tolerance<\/strong> for demanding environments<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">This ensures you receive a solution that is <strong>tailored to your industry needs<\/strong>.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Conclusion<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Choosing the right <strong>neodymium magnet grade<\/strong> is a balance of <strong>strength, temperature resistance, and cost efficiency<\/strong>. For most applications, <strong>N42<\/strong> offers excellent all-around performance, while <strong>N52<\/strong> is best for maximum strength. High-temperature grades like <strong>EH and AH<\/strong> are essential for demanding industrial applications.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udce9 <strong><a href=\"https:\/\/hsmagnet.com\/contact-us\/\">Contact HSMagnet<\/a><\/strong> today for expert advice and custom solutions to match your project requirements.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Les d\u00e9signations telles que N35, N42 ou N52 correspondent \u00e0 la classe d&#039;un aimant n\u00e9odyme. Cette classe indique le produit \u00e9nerg\u00e9tique maximal (BH)max, mesur\u00e9 en MGOe, qui refl\u00e8te la puissance de l&#039;aimant. Comprendre ces valeurs est la premi\u00e8re \u00e9tape pour choisir l&#039;aimant adapt\u00e9 \u00e0 votre application.<\/p>","protected":false},"author":1,"featured_media":13506,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_eb_attr":"","footnotes":""},"categories":[23],"tags":[],"class_list":["post-2530","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-magnet-tech"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>How to Select Neodymium Magnet Grades: N35, N42, N52 &amp; High-Temperature Options<\/title>\n<meta name=\"description\" content=\"Learn how to choose the right neodymium magnet grade (N35\u2013N52) and high-temperature options (M, H, SH, UH, EH, AH). 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