{"id":1866,"date":"2025-08-11T06:28:03","date_gmt":"2025-08-11T06:28:03","guid":{"rendered":"https:\/\/nbaem.com\/?p=1866"},"modified":"2026-06-27T11:57:35","modified_gmt":"2026-06-27T11:57:35","slug":"samarium-cobalt-vs-neodymium-magnets","status":"publish","type":"post","link":"https:\/\/nbaem.com\/ar\/samarium-cobalt-vs-neodymium-magnets\/","title":{"rendered":"\u0627\u0644\u0645\u0639\u0627\u062f\u0646 \u0627\u0644\u0633\u0645\u0627\u0648\u0631\u064a\u0651\u0629 \u0645\u0642\u0627\u0628\u0644 \u0645\u063a\u0646\u0627\u0637\u064a\u0633\u0627\u062a \u0627\u0644\u0646\u064a\u0648\u062f\u064a\u0645\u064a\u0648\u0645: \u0627\u0644\u0642\u0648\u0629 \u0648\u0627\u0644\u0627\u0633\u062a\u062e\u062f\u0627\u0645\u0627\u062a"},"content":{"rendered":"<p>Are you wondering which rare earth magnet is the best fit for your project: <strong>\u0627\u0644\u0645\u063a\u0646\u0627\u0637\u064a\u0633\u0627\u062a \u0645\u0646 \u0633\u0645\u0627\u0631\u064a\u0648\u0645 \u0643\u0648\u0628\u0627\u0644\u062a \u0645\u0642\u0627\u0628\u0644 \u0627\u0644\u0646\u064a\u0648\u062f\u064a\u0645\u064a\u0648\u0645<\/strong>? Choosing the right magnet type can make all the difference in performance, durability, and cost-efficiency. Whether you\u2019re an engineer designing high-precision motors, a buyer sourcing materials, or a hobbyist exploring magnet options, understanding these two powerhouse magnets is essential.<\/p>\n<p>In this detailed comparison, we\u2019ll break down the key differences between <strong>samarium cobalt (SmCo)<\/strong> \u0648 <strong>neodymium (NdFeB)<\/strong> magnets\u2014covering everything from magnetic strength and temperature tolerance to corrosion resistance and industry use cases. Plus, you\u2019ll get insights into pricing and supply chain factors that impact your buying decision.<\/p>\n<p>If you want to avoid costly mistakes and choose the ideal magnet for your specific needs, this guide is for you. Let\u2019s dive into the world of <strong>\u0627\u0644\u0645\u063a\u0646\u0627\u0637\u064a\u0633\u0627\u062a \u0645\u0646 \u0633\u0645\u0627\u0631\u064a\u0648\u0645 \u0643\u0648\u0628\u0627\u0644\u062a \u0645\u0642\u0627\u0628\u0644 \u0627\u0644\u0646\u064a\u0648\u062f\u064a\u0645\u064a\u0648\u0645<\/strong> and help you make an informed choice with expert tips from NBAEM, a trusted Chinese supplier specializing in both magnet types.<\/p>\n<div id=\"attachment_1867\" style=\"width: 811px\" class=\"wp-caption alignnone\"><img decoding=\"async\" aria-describedby=\"caption-attachment-1867\" class=\"size-full wp-image-1867\" src=\"https:\/\/nbaem.com\/wp-content\/uploads\/2025\/08\/samarium-cobalt-vs-neodymium-magnets.jpg\" alt=\"\u0627\u0644\u0645\u063a\u0646\u0627\u0637\u064a\u0633\u0627\u062a \u0645\u0646 \u0633\u0645\u0627\u0631\u064a\u0648\u0645 \u0643\u0648\u0628\u0627\u0644\u062a \u0645\u0642\u0627\u0628\u0644 \u0627\u0644\u0646\u064a\u0648\u062f\u064a\u0645\u064a\u0648\u0645\" width=\"801\" height=\"421\" srcset=\"https:\/\/nbaem.com\/wp-content\/uploads\/2025\/08\/samarium-cobalt-vs-neodymium-magnets-200x105.jpg 200w, https:\/\/nbaem.com\/wp-content\/uploads\/2025\/08\/samarium-cobalt-vs-neodymium-magnets-300x158.jpg 300w, https:\/\/nbaem.com\/wp-content\/uploads\/2025\/08\/samarium-cobalt-vs-neodymium-magnets-400x210.jpg 400w, https:\/\/nbaem.com\/wp-content\/uploads\/2025\/08\/samarium-cobalt-vs-neodymium-magnets-600x315.jpg 600w, https:\/\/nbaem.com\/wp-content\/uploads\/2025\/08\/samarium-cobalt-vs-neodymium-magnets-768x404.jpg 768w, https:\/\/nbaem.com\/wp-content\/uploads\/2025\/08\/samarium-cobalt-vs-neodymium-magnets.jpg 801w\" sizes=\"(max-width: 801px) 100vw, 801px\" \/><p id=\"caption-attachment-1867\" class=\"wp-caption-text\">\u0627\u0644\u0645\u063a\u0646\u0627\u0637\u064a\u0633\u0627\u062a \u0645\u0646 \u0633\u0645\u0627\u0631\u064a\u0648\u0645 \u0643\u0648\u0628\u0627\u0644\u062a \u0645\u0642\u0627\u0628\u0644 \u0627\u0644\u0646\u064a\u0648\u062f\u064a\u0645\u064a\u0648\u0645<\/p><\/div>\n<h2>What Are Samarium Cobalt and Neodymium Magnets<\/h2>\n<p><strong>Samarium Cobalt (SmCo) and Neodymium Iron Boron (NdFeB) magnets are both types of rare earth magnets known for their exceptional magnetic properties. They are made from alloys of rare earth elements, which give them significantly higher performance compared to conventional ferrite or alnico magnets.<\/strong><\/p>\n<p><strong>Samarium Cobalt magnets<\/strong> are composed mainly of samarium (Sm) and cobalt (Co), with trace amounts of other metals like copper and iron to enhance performance. They were first developed in the early 1970s and were the strongest permanent magnets available before neodymium magnets were introduced. SmCo magnets are prized for their ability to maintain magnetic strength at high temperatures and their outstanding resistance to corrosion without the need for coatings.<\/p>\n<p><strong>\u0645\u063a\u0646\u0627\u0637\u064a\u0633\u0627\u062a \u0627\u0644\u0646\u064a\u0648\u062f\u064a\u0645\u064a\u0648\u0645<\/strong>, chemically known as NdFeB, are made from neodymium (Nd), iron (Fe), and boron (B). Initially developed in the early 1980s, they quickly became the most powerful permanent magnets available, capable of producing much stronger magnetic fields than SmCo magnets for the same size. However, they typically require protective coatings such as nickel or epoxy to prevent oxidation.<\/p>\n<h3>Manufacturing Processes<\/h3>\n<p>Both SmCo and NdFeB magnets go through similar manufacturing stages, though the materials and exact processes differ:<\/p>\n<ul>\n<li><strong>Powder preparation<\/strong> \u2013 The raw metals are melted, alloyed, and ground into fine powder.<\/li>\n<li><strong>\u0627\u0644\u0636\u063a\u0637<\/strong> \u2013 The powder is aligned in a strong magnetic field and pressed into a desired shape.<\/li>\n<li><strong>\u0627\u0644\u062a\u0644\u0628\u064a\u062f<\/strong> cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits<\/li>\n<li><strong>\u0627\u0644 \u062a\u0634\u063a\u064a\u0644<\/strong> cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits<\/li>\n<li><strong>cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits<\/strong> cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits<\/li>\n<li><strong>\u0627\u0644\u062a\u0645\u063a\u064a\u0637<\/strong> cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits<\/li>\n<\/ul>\n<p>cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits <strong>\u0645\u063a\u0627\u0646\u0637 SmCo \u0639\u0627\u0644\u064a\u0629 \u0627\u0644\u0623\u062f\u0627\u0621<\/strong>cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits <strong><a href=\"https:\/\/nbaem.com\/ar\/what-is-high-performance-smco-magnets\/\" target=\"_blank\" rel=\"noopener\">\u0647\u0646\u0627<\/a><\/strong>.<\/p>\n<h2>Magnetic Properties Comparison<\/h2>\n<p>\u0639\u0646\u062f \u0627\u0644\u0645\u0642\u0627\u0631\u0646\u0629 \u0628\u064a\u0646 <strong>\u0627\u0644\u0645\u063a\u0646\u0627\u0637\u064a\u0633\u0627\u062a \u0645\u0646 \u0633\u0645\u0627\u0631\u064a\u0648\u0645 \u0643\u0648\u0628\u0627\u0644\u062a \u0645\u0642\u0627\u0628\u0644 \u0627\u0644\u0646\u064a\u0648\u062f\u064a\u0645\u064a\u0648\u0645<\/strong>cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits<\/p>\n<p><strong>Magnetic strength<\/strong><\/p>\n<ul>\n<li>cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits <strong>cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits<\/strong>.<\/li>\n<li>cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits <strong>cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits<\/strong>cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits<\/li>\n<\/ul>\n<p><strong>Temperature stability<\/strong><\/p>\n<ul>\n<li>cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits <strong>cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits<\/strong> cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits<\/li>\n<li>cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits <strong>cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits<\/strong> cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits<\/li>\n<\/ul>\n<p><strong>cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits<\/strong><\/p>\n<ul>\n<li>cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits<\/li>\n<li>cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits<\/li>\n<\/ul>\n<p><strong>cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits<\/strong><\/p>\n<ul>\n<li>cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits<\/li>\n<li>cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits<\/li>\n<\/ul>\n<p><strong>cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits<\/strong><\/p>\n<ul>\n<li>SmCo is denser and more brittle, so it needs careful handling to avoid chipping.<\/li>\n<li>NdFeB is slightly less brittle but still fragile compared to steel parts, especially without a coating.<\/li>\n<\/ul>\n<p>Here\u2019s a quick property comparison:<\/p>\n<table>\n<thead>\n<tr>\n<th>\u062e\u0627\u0635\u064a\u0629<\/th>\n<th>\u0645\u063a\u0627\u0646\u0637 SmCo<\/th>\n<th>\u0645\u063a\u0627\u0646\u0637 NdFeB<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u0625\u0644\u064a\u0643 \u0645\u0642\u0627\u0631\u0646\u0629 \u0633\u0631\u064a\u0639\u0629 \u0644\u0623\u0643\u062b\u0631 \u0623\u0646\u0648\u0627\u0639 \u0648\u0645\u0642\u0627\u064a\u064a\u0633 \u0627\u0644\u0645\u063a\u0646\u0627\u0637\u064a\u0633\u0627\u062a \u0634\u064a\u0648\u0639\u064b\u0627 \u0627\u0644\u062a\u064a \u0633\u062a\u062c\u062f\u0647\u0627 \u0641\u064a \u0633\u0648\u0642 \u0645\u0635\u0631. \u062a\u062c\u0639\u0644 \u0647\u0630\u0647 \u0627\u0644\u0642\u0627\u0626\u0645\u0629 \u0645\u0646 \u0627\u0644\u0623\u0633\u0647\u0644 \u0645\u0637\u0627\u0628\u0642\u0629 \u0642\u0648\u0629 \u0627\u0644\u0645\u063a\u0646\u0627\u0637\u064a\u0633\u060c \u062d\u062c\u0645\u0647\u060c \u0648\u062a\u0642\u064a\u064a\u062f\u0647 \u0627\u0644\u0632\u0645\u0646\u064a \u0645\u0639 \u0627\u0644\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0627\u0644\u0648\u0638\u064a\u0641\u064a \u0623\u0648 \u0627\u0644\u0645\u0646\u062a\u062c \u0627\u0644\u062e\u0627\u0635 \u0628\u0643.<\/td>\n<td>20\u201332<\/td>\n<td>35\u201352<\/td>\n<\/tr>\n<tr>\n<td>\u0627\u0644\u062d\u062f \u0627\u0644\u0623\u0642\u0635\u0649 \u0644\u0644\u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644\u064a\u0629<\/td>\n<td>~300\u00b0C \/ 572\u00b0F<\/td>\n<td>80\u2013150\u00b0C \/ 176\u2013302\u00b0F<\/td>\n<\/tr>\n<tr>\n<td>\u0645\u0642\u0627\u0648\u0645\u0629 \u0627\u0644\u062a\u0622\u0643\u0644<\/td>\n<td>\u0645\u0645\u062a\u0627\u0632<\/td>\n<td>Poor (needs coating)<\/td>\n<\/tr>\n<tr>\n<td>Coercivity at High Temp<\/td>\n<td>\u0639\u0627\u0644\u064a \u062c\u062f\u064b\u0627<\/td>\n<td>\u0645\u0646\u062e\u0641\u0636 \u0625\u0644\u0649 \u0639\u0627\u0644\u064a<\/td>\n<\/tr>\n<tr>\n<td>\u0627\u0644\u0647\u0634\u0627\u0634\u0629<\/td>\n<td>\u0639\u0627\u0644\u064a<\/td>\n<td>\u0645\u062a\u0648\u0633\u0637<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u0645\u0632\u0627\u064a\u0627 \u0648\u0639\u064a\u0648\u0628<\/h2>\n<h3>Samarium Cobalt Magnet Pros<\/h3>\n<ul>\n<li><strong>\u062a\u062d\u0645\u0644 \u062f\u0631\u062c\u0627\u062a \u062d\u0631\u0627\u0631\u0629 \u0639\u0627\u0644\u064a\u0629<\/strong> \u2013 Works reliably in environments up to around 300\u00b0C, making it a go-to for high-temp operations.<\/li>\n<li><strong>\u0645\u0642\u0627\u0648\u0645\u0629 \u0627\u0644\u062a\u0622\u0643\u0644 \u0627\u0644\u0645\u0645\u062a\u0627\u0632\u0629<\/strong> \u2013 Naturally resistant to rust and oxidation without the need for coatings.<\/li>\n<li><strong>Long lifespan<\/strong> \u2013 Maintains magnetic strength for decades, even in tough industrial settings.<\/li>\n<\/ul>\n<h3>Samarium Cobalt Magnet Cons<\/h3>\n<ul>\n<li><strong>Higher cost<\/strong> \u2013 Raw materials like samarium and cobalt come at a premium.<\/li>\n<li><strong>Brittle material<\/strong> \u2013 Can chip or crack if dropped or struck.<\/li>\n<li><strong>Lower magnetic strength compared to NdFeB<\/strong> \u2013 Good strength, but not as powerful as neodymium.<\/li>\n<\/ul>\n<h3>Neodymium Magnet Pros<\/h3>\n<ul>\n<li><strong>\u0642\u0648\u0629 \u0645\u063a\u0646\u0627\u0637\u064a\u0633\u064a\u0629 \u0639\u0627\u0644\u064a\u0629<\/strong> \u2013 The strongest type of permanent magnet available, ideal when max pull force is priority.<\/li>\n<li><strong>\u0641\u0639\u0651\u0627\u0644 \u0645\u0646 \u062d\u064a\u062b \u0627\u0644\u062a\u0643\u0644\u0641\u0629<\/strong> \u2013 Generally cheaper per unit of magnetic strength than SmCo.<\/li>\n<li><strong>Widely available<\/strong> \u2013 Easy to source in many shapes, sizes, and grades due to large-scale production.<\/li>\n<\/ul>\n<h3>Neodymium Magnet Cons<\/h3>\n<ul>\n<li><strong>Poor temperature tolerance<\/strong> \u2013 Loses strength above 80\u2013200\u00b0C depending on the grade.<\/li>\n<li><strong>Prone to corrosion<\/strong> \u2013 Requires coatings (nickel, zinc, epoxy) to prevent rust, especially in humid or marine settings.<\/li>\n<li><strong>Shorter lifespan in harsh conditions<\/strong> \u2013 Performance can degrade faster if exposed to heat, moisture, or chemicals without protection.<\/li>\n<\/ul>\n<h2>Applications and Industry Use Cases<\/h2>\n<p>Samarium cobalt (SmCo) and neodymium (NdFeB) magnets are both rare earth magnets, but they shine in different industries because of how they handle strength, heat, and environment.<\/p>\n<h3>Where Samarium Cobalt Magnets Are Used<\/h3>\n<p>SmCo magnets hold their magnetic strength in conditions where many other permanent magnets fail. They\u2019re common in:<\/p>\n<ul>\n<li><strong>Aerospace<\/strong> \u2013 Used in navigation systems, actuators, and high-temp components where reliability is critical.<\/li>\n<li><strong>\u0623\u062c\u0647\u0632\u0629 \u0627\u0633\u062a\u0634\u0639\u0627\u0631 \u0627\u0644\u0633\u064a\u0627\u0631\u0627\u062a<\/strong> \u2013 Ideal for under-the-hood parts like ABS wheel sensors and throttle position sensors that see high heat and vibration.<\/li>\n<li><strong>High-temperature environments<\/strong> \u2013 Industrial equipment, turbines, and even oil and gas tools where temperatures can exceed what neodymium can handle.<\/li>\n<\/ul>\n<h3>Where Neodymium Magnets Are Used<\/h3>\n<p>cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits<\/p>\n<ul>\n<li><strong>\u0627\u0644\u0625\u0644\u0643\u062a\u0631\u0648\u0646\u064a\u0627\u062a<\/strong> cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits<\/li>\n<li><strong>cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits<\/strong> cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits<\/li>\n<li><strong>\u0627\u0644\u0637\u0627\u0642\u0629 \u0627\u0644\u0645\u062a\u062c\u062f\u062f\u0629<\/strong> cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits<\/li>\n<li><strong>cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits<\/strong> cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits<\/li>\n<\/ul>\n<h3>NBAEM Real-World Supply Examples<\/h3>\n<p>cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits<\/p>\n<ul>\n<li>cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits <strong>\u0645\u063a\u0646\u0627\u0637\u064a\u0633\u0627\u062a SmCo<\/strong> cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits<\/li>\n<li>cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits <strong>\u0645\u063a\u0646\u0627\u0637\u064a\u0633\u0627\u062a NdFeB<\/strong> cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits<\/li>\n<li>cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits<\/li>\n<li>cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits<\/li>\n<\/ul>\n<p>cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits<\/p>\n<h2>Cost Considerations and Supply Chain Insights<\/h2>\n<p>cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits <strong>cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits<\/strong>cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits <strong>cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits<\/strong>cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits<\/p>\n<p>cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits<\/p>\n<ul>\n<li><strong>cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits<\/strong> cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits<\/li>\n<li><strong>cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits<\/strong> cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits<\/li>\n<li><strong>Volume and shapes:<\/strong> Larger orders and standard shapes usually get better pricing.<\/li>\n<\/ul>\n<p>From a <strong>global supply<\/strong> standpoint, China dominates the rare earth magnet industry \u2014 both SmCo and NdFeB. NBAEM sources directly from trusted manufacturers in China, meaning <strong>stable pricing, dependable lead times, and strict quality checks<\/strong> before shipping to the US market.<\/p>\n<p>Typical lead times:<\/p>\n<ul>\n<li><strong>In-stock sizes:<\/strong> 1\u20132 weeks to US customers.<\/li>\n<li><strong>cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits<\/strong> 4\u20136 weeks depending on specs and finishing.<\/li>\n<\/ul>\n<p>Minimum order quantities (MOQ) vary:<\/p>\n<ul>\n<li>NdFeB: usually lower MOQ, making it practical for smaller runs.<\/li>\n<li>SmCo: often higher MOQ due to production setup costs, but NBAEM works with flexible batch sizes to support prototyping and low-volume needs.<\/li>\n<\/ul>\n<p>For US companies, balancing <strong>budget, project specs, and supply reliability<\/strong> is key. With NBAEM\u2019s supply chain setup, buyers get access to <strong>competitive Chinese factory pricing<\/strong> without the usual headaches in sourcing and importing.<\/p>\n<h2>How to Choose the Right Magnet for Your Project<\/h2>\n<p>When deciding between samarium cobalt (SmCo) and neodymium (NdFeB) magnets, we always suggest looking at your project\u2019s real-world needs first. The right fit isn\u2019t just about magnetic strength \u2014 it\u2019s also about where and how the magnet will be used, what environment it will face, and how much you want to spend.<\/p>\n<h3>Key Questions to Ask<\/h3>\n<p>Before buying, lock in these details:<\/p>\n<ul>\n<li><strong>What\u2019s the highest temperature it will face?<\/strong> If it runs hot (above 300\u00b0F), SmCo is the safer choice.<\/li>\n<li><strong>How strong does it need to be?<\/strong> For max pull in tight spaces, NdFeB is hard to beat.<\/li>\n<li><strong>Will it be exposed to moisture, salt, or chemicals?<\/strong> SmCo handles corrosion naturally; NdFeB needs protective coating.<\/li>\n<li><strong>What\u2019s your budget?<\/strong> NdFeB is usually more cost-effective, SmCo costs more but lasts longer in demanding setups.<\/li>\n<\/ul>\n<h3>Quick Comparison<\/h3>\n<table>\n<thead>\n<tr>\n<th>\u0639\u0627\u0645\u0644<\/th>\n<th>\u0633\u0627\u0645\u0627\u0631\u064a\u0648\u0645 \u0643\u0648\u0628\u0627\u0644\u062a (SmCo)<\/th>\n<th>\u0627\u0644\u0646\u0650\u062f\u0652\u064a\u0650\u0645\u064a\u0648\u0645 (NdFeB)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u0627\u0644\u0642\u0648\u0629 \u0627\u0644\u0645\u063a\u0646\u0627\u0637\u064a\u0633\u064a\u0629<\/td>\n<td>High, but less than NdFeB<\/td>\n<td>\u0639\u0627\u0644\u064a \u062c\u062f\u064b\u0627<\/td>\n<\/tr>\n<tr>\n<td>\u062a\u062d\u0645\u0644 \u0627\u0644\u062d\u0631\u0627\u0631\u0629<\/td>\n<td>Excellent (up to ~572\u00b0F \/ 300\u00b0C)<\/td>\n<td>Fair (up to ~176\u00b0F \/ 80\u00b0C std.)<\/td>\n<\/tr>\n<tr>\n<td>\u0645\u0642\u0627\u0648\u0645\u0629 \u0627\u0644\u062a\u0622\u0643\u0644<\/td>\n<td>Excellent (no coating needed)<\/td>\n<td>Poor without coating<\/td>\n<\/tr>\n<tr>\n<td>\u0627\u0644\u062a\u0643\u0644\u0641\u0629<\/td>\n<td>\u0623\u0639\u0644\u0649<\/td>\n<td>\u0623\u062f\u0646\u0649<\/td>\n<\/tr>\n<tr>\n<td>\u0627\u0644\u062a\u062d\u0645\u0651\u0644 \u0641\u064a \u0627\u0644\u0628\u064a\u0626\u0627\u062a \u0627\u0644\u0642\u0627\u0633\u064a\u0629<\/td>\n<td>\u0645\u0645\u062a\u0627\u0632<\/td>\n<td>Moderate (depends on coating)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>NBAEM Expert Tips<\/h3>\n<ul>\n<li><strong>cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits<\/strong> cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits<\/li>\n<li><strong>cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits<\/strong>cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits<\/li>\n<li><strong>cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits<\/strong>cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits<\/li>\n<li><strong>cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits<\/strong> cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits<\/li>\n<\/ul>\n<h2>NBAEM Magnet Solutions<\/h2>\n<p>cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits <strong>samarium cobalt (SmCo)<\/strong> \u0648 <strong>neodymium (NdFeB)<\/strong> cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits<\/p>\n<p>\u0646\u062a\u0628\u0639 \u0645\u0639\u0627\u064a\u064a\u0631 \u0635\u0627\u0631\u0645\u0629 <strong>cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits<\/strong> cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits <strong>cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits<\/strong> cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits<\/p>\n<p>\u0646\u062d\u0646 <strong>cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits<\/strong> cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits<\/p>\n<ul>\n<li>cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits<\/li>\n<li>cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits<\/li>\n<li>cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits<\/li>\n<li>cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits<\/li>\n<\/ul>\n<p>cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits <strong>cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits<\/strong> cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits<\/p>\n<p>\u0644\u0640 <strong>cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits<\/strong>cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits<\/p>\n<ul>\n<li>cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https:\/\/developers.cloudflare.com\/workers\/wrangler\/configuration\/#limits<\/li>\n<li>Call during U.S. business hours for immediate response<\/li>\n<li>Request a sample run before committing to full production<\/li>\n<\/ul>\n<p>NBAEM has years of experience supplying rare earth magnets to U.S. industries \u2014 from high-performance motors to medical devices \u2014 and we handle both small production runs and large bulk orders with dependable delivery schedules.<\/p>\n<h2>FAQ Section<\/h2>\n<h3>Can samarium cobalt replace neodymium magnets in all applications<\/h3>\n<p>Not always. Samarium cobalt (SmCo) handles heat and corrosion better, but it\u2019s not as strong as neodymium (NdFeB) for the same size. In industries where size and maximum pull strength are critical\u2014like compact motors or magnetic clasps\u2014neodymium is still the go-to. SmCo is better suited when the magnet faces high heat, extreme cold, or corrosive environments.<\/p>\n<h3>Are neodymium magnets safe to use in high temperatures<\/h3>\n<p>Standard neodymium magnets start losing strength around 176\u00b0F (80\u00b0C), and prolonged exposure can cause permanent loss. High-temp grades can go higher, up to around 392\u00b0F (200\u00b0C), but they\u2019re still not as heat-tolerant as SmCo. If your application regularly sees high heat\u2014like in aerospace sensors or under-hood automotive parts\u2014SmCo is usually the safer choice.<\/p>\n<h3>What coatings are available for neodymium magnets to prevent corrosion<\/h3>\n<p>Neodymium magnets are prone to rust if not coated. Common coatings include:<\/p>\n<ul>\n<li><strong>Nickel-Copper-Nickel (Ni-Cu-Ni)<\/strong> \u2013 Most common, offers good general protection<\/li>\n<li><strong>Zinc (Zn)<\/strong> \u2013 Cost-effective, but less durable<\/li>\n<li><strong>\u0625\u064a\u0628\u0648\u0643\u0633\u0649<\/strong> \u2013 Great for high-humidity or saltwater exposure<\/li>\n<li><strong>\u0630\u0647\u0628<\/strong> \u2013 Used for specialty or medical applications<\/li>\n<\/ul>\n<p>Choosing the right coating depends on where and how the magnet will be used.<\/p>\n<h3>How to store samarium cobalt and neodymium magnets properly<\/h3>\n<ul>\n<li>Keep them away from high humidity to avoid corrosion (especially for uncoated or poorly coated NdFeB)<\/li>\n<li>Store in a dry, room-temperature place, away from magnetic-sensitive electronics and data storage<\/li>\n<li>Separate with spacers to prevent accidental chipping or cracking<\/li>\n<li>Use non-magnetic containers for transport and storage to avoid injuries or interference with other tools<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>\u0642\u0627\u0631\u0646 \u0628\u064a\u0646 \u0645\u063a\u0646\u0627\u0637\u064a\u0633\u0627\u062a \u0627\u0644\u0633\u0645\u0627\u0648\u0631\u064a \u0627\u0644\u0643\u0648\u0628\u0627\u0644\u062a\u064a\u0629 \u0648\u0645\u063a\u0646\u0627\u0637\u064a\u0633\u0627\u062a \u0627\u0644\u0646\u064a\u0648\u062f\u064a\u0645\u064a\u0648\u0645 \u0645\u0646 \u062d\u064a\u062b \u0627\u0644\u0642\u0648\u0629 \u0648\u0645\u0642\u0627\u0648\u0645\u0629 \u0627\u0644\u062d\u0631\u0627\u0631\u0629 \u0648\u0627\u0644\u062a\u0643\u0644\u0641\u0629 \u0648\u0627\u0628\u062d\u062b \u0639\u0646 \u0623\u0641\u0636\u0644 \u0645\u063a\u0646\u0627\u0637\u064a\u0633 \u0623\u0631\u0636 \u0646\u0627\u062f\u0631\u0629 \u0644\u062a\u0637\u0628\u064a\u0642\u0643<\/p>","protected":false},"author":1,"featured_media":1867,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_mi_skip_tracking":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1866","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"jetpack_featured_media_url":"https:\/\/nbaem.com\/wp-content\/uploads\/2025\/08\/samarium-cobalt-vs-neodymium-magnets.jpg","_links":{"self":[{"href":"https:\/\/nbaem.com\/ar\/wp-json\/wp\/v2\/posts\/1866","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nbaem.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nbaem.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nbaem.com\/ar\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/nbaem.com\/ar\/wp-json\/wp\/v2\/comments?post=1866"}],"version-history":[{"count":1,"href":"https:\/\/nbaem.com\/ar\/wp-json\/wp\/v2\/posts\/1866\/revisions"}],"predecessor-version":[{"id":1868,"href":"https:\/\/nbaem.com\/ar\/wp-json\/wp\/v2\/posts\/1866\/revisions\/1868"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nbaem.com\/ar\/wp-json\/wp\/v2\/media\/1867"}],"wp:attachment":[{"href":"https:\/\/nbaem.com\/ar\/wp-json\/wp\/v2\/media?parent=1866"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nbaem.com\/ar\/wp-json\/wp\/v2\/categories?post=1866"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nbaem.com\/ar\/wp-json\/wp\/v2\/tags?post=1866"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}