{"id":22616,"date":"2026-09-21T08:11:06","date_gmt":"2026-09-21T08:11:06","guid":{"rendered":"https:\/\/hvr-magnet.com\/?p=22616"},"modified":"2026-09-21T08:11:06","modified_gmt":"2026-09-21T08:11:06","slug":"high-temperature-lifting-magnet-limits","status":"publish","type":"post","link":"https:\/\/hvr-magnet.com\/ar\/high-temperature-lifting-magnet-limits\/","title":{"rendered":"What Temperature Can a Lifting Magnet Handle?"},"content":{"rendered":"\r\n<div class=\"hvr-lm-heat\"><span style=\"font-size: 16px;\">A standard electro-permanent lifting magnet \u2014 the device most buyers know as a magnetic lifter \u2014 is happiest handling steel up to about <\/span><strong style=\"font-size: 16px;\">150\u00b0C<\/strong><span style=\"font-size: 16px;\"> with no special measures. Push beyond that and you need a purpose-built high temperature lifting magnet: with upgraded magnet grades and thermal shielding, the same technology reaches <\/span><strong style=\"font-size: 16px;\">350\u00b0C<\/strong><span style=\"font-size: 16px;\"> and beyond; AlNiCo-only designs handle roughly <\/span><strong style=\"font-size: 16px;\">500\u00b0C<\/strong><span style=\"font-size: 16px;\"> for short cycles. Above that, purpose-built water-cooled electromagnets take over, all the way to about <\/span><strong style=\"font-size: 16px;\">700\u00b0C<\/strong><span style=\"font-size: 16px;\">. And at roughly <\/span><strong style=\"font-size: 16px;\">768\u00b0C<\/strong><span style=\"font-size: 16px;\"> the conversation ends, because steel itself stops being magnetic.<\/span>\r\n<p>In other words, knowing where your workpiece sits on that ladder is the difference between a magnet that runs for ten years and one that quietly loses its grip in month three. This guide explains, in plain language, why heat kills holding force, where the limits of each technology actually come from, and how to specify a high temperature lifting magnet that survives your hot line \u2014 not just one that survives the demo.<\/p>\r\n<figure><img fetchpriority=\"high\" decoding=\"async\" src=\"https:\/\/hvr-magnet.com\/wp-content\/uploads\/2026\/09\/high-temperature-electro-permanent-magnet-40t-slab-spreader.jpg\" alt=\"Electro-permanent lifting magnet spreader handling a 40 tonne steel slab\" width=\"800\" height=\"600\" \/>\r\n<figcaption>Electro-permanent lifting magnet spreader sized for 40 t slab handling. Slab and billet lines are where temperature limits matter most.<\/figcaption>\r\n<\/figure>\r\n<h2>Why heat is the enemy of magnetic lifting<\/h2>\r\n<p>Heat reaches a magnetic lifter through three doors at once \u2014 and the same three paths apply whether the unit hangs on a crane magnet, sits on a telescopic beam, or rides on a forklift:<\/p>\r\n<ul>\r\n<li><strong>Conduction<\/strong> \u2014 the hot workpiece sits directly on the magnet\u2019s pole face.<\/li>\r\n<li><strong>Radiation<\/strong> \u2014 nearby hot steel and furnace glow warm the whole unit.<\/li>\r\n<li><strong>Self-heating<\/strong> \u2014 the magnet\u2019s own coil warms up whenever it is energized.<\/li>\r\n<\/ul>\r\n<p>As internal temperature climbs, two things happen. First, the steel being lifted becomes less receptive to the magnetic field. Then the magnet itself weakens. Neither is dramatic at first \u2014 that\u2019s the trap. A magnet does not fail loudly; it just holds a little less every week until someone recalculates the safety factor the hard way.<\/p>\r\n<p>So every serious high temperature lifting magnet design fights on two fronts: keep the <em>workpiece heat out<\/em>, and keep the <em>components below their own temperature limits<\/em>. Which components those are depends entirely on the technology inside. (For a side-by-side of the two technologies beyond temperature, see our <a href=\"https:\/\/hvr-magnet.com\/electro-permanent-magnet-vs-electromagnet-key-differences\/\">electro-permanent magnet vs electromagnet comparison<\/a>.)<\/p>\r\n<h2>The hard ceiling: 768\u00b0C, when steel stops being magnetic<\/h2>\r\n<p>Before comparing products, fix one physical fact in place. Iron loses its ferromagnetism at its <a href=\"https:\/\/en.wikipedia.org\/wiki\/Curie_temperature\" target=\"_blank\" rel=\"noopener\">Curie point<\/a>, about <strong>770\u00b0C<\/strong>; in practice steel is considered non-magnetic above roughly <strong>768\u00b0C<\/strong> <span class=\"src\">(Goudsmit Magnetics; Truninger AG)<\/span>. Below that line, however, magnetism fades gradually \u2014 which is why lifting force drops well before the ceiling arrives.<\/p>\r\n<div class=\"warn-box\">\r\n<p><strong>Practical rule:<\/strong> no lifting magnet \u2014 electromagnetic or permanent \u2014 can grip steel much above 700\u00b0C. If a supplier quotes \u201cworks at 800\u00b0C\u201d, they are quoting the ambient temperature their housing survives, not the steel you can lift.<\/p>\r\n<\/div>\r\n<p>Therefore, always <strong>measure<\/strong> the workpiece surface temperature at the actual lift point instead of judging by colour. A billet that looks evenly hot can easily be 150\u00b0C cooler on the end that touches the magnet.<\/p>\r\n<h2>How heat attacks electromagnets and electro-permanent magnets differently<\/h2>\r\n<p>Both technologies move the same steel, but heat hits them in different places. Understanding this one section will let you read any supplier\u2019s high-temperature datasheet correctly.<\/p>\r\n<h3>Electromagnets: the coil is both the engine and the victim<\/h3>\r\n<p>A lifting electromagnet generates its entire field from a continuously energized coil. Heat therefore attacks the <strong>insulation system<\/strong>: enamel on the magnet wire, the potting compound, and the winding\u2019s temperature class. Wire grades are classed B, F, H and beyond \u2014 corresponding to long-term limits of roughly 130\u00b0C, 155\u00b0C and 180\u00b0C <span class=\"src\">(per IEC insulation classes)<\/span> \u2014 and ultra-high-temperature units move up to class C materials with multi-layer heat shielding.<\/p>\r\n<p>Because the coil is powered the whole time it holds the load, an electromagnet <em>heats itself<\/em>. That is why duty cycle matters: standard units are rated TD-60% (energized 60% of the cycle), high-frequency versions TD-75% <span class=\"src\">(industry convention, e.g. Kino Cranes, Voitto Crane)<\/span>. For example, run a TD-60% magnet on a 25-cycles-per-hour line and it overheats \u2014 and an overheated coil delivers less force exactly when the steel is hottest.<\/p>\r\n<p>The upside: with no permanent magnets inside, there is nothing to irreversibly demagnetize. Consequently, with enough insulation, shielding and water cooling, electromagnets remain the mainstream answer for the hottest duty, up to the ~700\u00b0C practical ceiling.<\/p>\r\n<h3>Electro-permanent magnets: the magnets hold, so the magnets are at risk<\/h3>\r\n<p>An <a href=\"https:\/\/hvr-magnet.com\/hvr-mag-lifting-magnet\/\">electro-permanent magnet<\/a> (EPM) does the opposite trick. Permanent magnets provide the holding force; the coil fires only for a 0.1\u20131 second pulse to switch the magnet on or off. In normal operation, meanwhile, the coil carries <strong>zero current<\/strong>, so the unit generates almost no heat of its own \u2014 the usual figure quoted is around <strong>95% less energy<\/strong> than a comparable electromagnet, and it cannot drop the load in a power cut.<\/p>\r\n<p>The trade-off, however, is that permanent magnets sit right at the pole face, close to the heat. Every permanent-magnet material has a <strong>maximum operating temperature<\/strong>. Stay below it and the magnet recovers fully on cooling. Exceed it and the magnet loses strength <em>permanently<\/em> \u2014 not a resettable derating but a permanent cut in holding force. Cross the Curie temperature of the magnet material and the loss becomes total.<\/p>\r\n<div class=\"tl-box\">\r\n<p><strong>One-sentence summary:<\/strong> an electromagnet risks its insulation; an electro-permanent magnet risks its magnets. Electromagnets degrade gradually and recover when cooled; a cooked EPM stays cooked.<\/p>\r\n<\/div>\r\n<figure><img decoding=\"async\" src=\"https:\/\/hvr-magnet.com\/wp-content\/uploads\/2026\/09\/lifting-magnet-temperature-ladder.jpg\" alt=\"Lifting magnet temperature ladder showing working ranges from 0 to 768 degrees Celsius for electro-permanent magnets and electromagnets\" width=\"800\" height=\"600\" \/>\r\n<figcaption>The temperature ladder: what each technology can reasonably do, band by band.<\/figcaption>\r\n<\/figure>\r\n<h2>High temperature limits: the magnet material ladder<\/h2>\r\n<p>For an electro-permanent magnet, the working limit is set by the weakest magnetic material inside. EPMs use two magnet sets \u2014 a fixed set and a reversible set \u2014 so both must survive the duty. Typical material limits:<\/p>\r\n<div class=\"tbl-wrap\">\r\n<table>\r\n<tbody>\r\n<tr>\r\n<th>Magnet material<\/th>\r\n<th>Max operating temp (typical grades)<\/th>\r\n<th>Role in an EPM<\/th>\r\n<\/tr>\r\n<tr>\r\n<td>Neodymium (NdFeB) N<\/td>\r\n<td>80\u00b0C<\/td>\r\n<td>Standard room-temperature work<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>NdFeB M \/ H \/ SH<\/td>\r\n<td>100 \/ 120 \/ 150\u00b0C<\/td>\r\n<td>Warm plate, warm billet, most mill duty<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>NdFeB UH \/ EH \/ TH<\/td>\r\n<td>180 \/ 200 \/ 220\u00b0C<\/td>\r\n<td>Hot-section work with shielding<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>Samarium-cobalt (SmCo)<\/td>\r\n<td>~350\u00b0C<\/td>\r\n<td>Fixed magnet for high-temp builds; costs noticeably more<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>AlNiCo<\/td>\r\n<td>up to ~540\u00b0C<\/td>\r\n<td>The heat champion; weaker magnetically, so needs a larger pole area<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>Iron-chromium-cobalt (e.g. 2J12)<\/td>\r\n<td>Curie ~680\u2013700\u00b0C; stable at 400\u00b0C<\/td>\r\n<td>Special reversible magnets for high-temp circuits<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<\/div>\r\n<p class=\"src\">Grade figures per published manufacturer data (e.g. Magswitch material tables; AlNiCo datasheets).<\/p>\r\n<p>Moreover, AlNiCo has a counter-intuitive trait worth knowing: its resistance to demagnetization actually <strong>improves<\/strong> as temperature rises \u2014 the only common lifting-magnet material that behaves this way. That, plus its Curie point near 850\u00b0C, is why every serious EPM design for hot work ends up with AlNiCo in the circuit <span class=\"src\">(Goudsmit; Senz Magnet)<\/span>.<\/p>\r\n<h2>Matching a high temperature lifting magnet to its duty band<\/h2>\r\n<p>Here is the same ladder translated into buying decisions. Find your band, read across.<\/p>\r\n<div class=\"tbl-wrap\">\r\n<table>\r\n<tbody>\r\n<tr>\r\n<th>Workpiece temp<\/th>\r\n<th>Electro-permanent magnet<\/th>\r\n<th>Electromagnet<\/th>\r\n<th>What changes in the design<\/th>\r\n<\/tr>\r\n<tr>\r\n<td><strong>0\u2013150\u00b0C<\/strong><\/td>\r\n<td>Standard NdFeB + AlNiCo build. Best cost and performance.<\/td>\r\n<td>Standard build, B\/F-class insulation.<\/td>\r\n<td>Nothing special. EPM also saves ~95% energy vs continuous excitation.<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>150\u2013350\u00b0C<\/strong><\/td>\r\n<td>High-temp NdFeB grades to 220\u00b0C, then SmCo; high-temp AlNiCo reversible magnets.<\/td>\r\n<td>F\/H-class wire, high-temp potting, watch duty cycle.<\/td>\r\n<td>1\u20135\u00a0mm insulation pad at the pole face; radiation shields; forced-air cooling.<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>350\u2013500\u00b0C<\/strong><\/td>\r\n<td>AlNiCo-only magnetic circuit; short-time duty. EPM loses force density, so expect a bigger, costlier unit.<\/td>\r\n<td>C-class insulation, heat shielding; still the more economical long-run choice.<\/td>\r\n<td>Insulation pads 20\u00a0mm+, ceramic stand-offs, active cooling.<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>500\u2013700\u00b0C<\/strong><\/td>\r\n<td>Custom full-AlNiCo, short-time only, with factory consultation. Rarely the right tool.<\/td>\r\n<td><strong>The mainstream answer:<\/strong> full water jacket, multi-layer insulation, long stable runs.<\/td>\r\n<td>Water-cooling loop, temperature monitoring, hot-state force derating.<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<\/div>\r\n<div class=\"tl-box\">\r\n<p><strong>The honest summary:<\/strong> below about 350\u00b0C, an electro-permanent magnet is usually the better machine \u2014 lower energy, safer on power loss, no thermal run-in. Above about 450\u2013500\u00b0C for <em>continuous<\/em> duty, buy an electromagnet, even from us. An EPM pushed past its magnets\u2019 limit does not get warmer and weaker; it gets permanently weaker.<\/p>\r\n<\/div>\r\n<h2>Cooling and shielding that actually work in plants<\/h2>\r\n<p>Temperature ratings are earned with hardware, not marketing. What real high-temperature builds include:<\/p>\r\n<ul>\r\n<li><strong>Insulation pads at the pole face<\/strong> (1\u20135\u00a0mm for warm duty, 20\u00a0mm+ or ceramic stand-offs for extreme duty) \u2014 the first and cheapest line of defence against conduction.<\/li>\r\n<li><strong>Radiation shields<\/strong> \u2014 reflective plates around the magnet body to bounce radiant heat away from the unit.<\/li>\r\n<li><strong>Forced-air cooling<\/strong> from roughly the 150\u2013220\u00b0C band upward, to strip accumulated heat between lifts.<\/li>\r\n<li><strong>Water cooling<\/strong> for serious duty. Water-jacketed electromagnets run continuously at 500\u00b0C+ workpiece temperatures. EPMs can be water-cooled too: copper tubes routed around the magnet body (they don\u2019t conduct magnetism, so holding force is unaffected) support ambient conditions around 400\u00b0C, and in automated handling lines water-cooled EPMs have been engineered for material temperatures up to about 650\u00b0C \u2014 always as a case-by-case design with the factory, never an off-the-shelf rating.<\/li>\r\n<\/ul>\r\n<figure><img decoding=\"async\" src=\"https:\/\/hvr-magnet.com\/wp-content\/uploads\/2026\/09\/magnetic-lifting-beam-steel-billets-port-terminal.jpg\" alt=\"Magnetic lifting beam handling steel billets at a port terminal\" width=\"800\" height=\"600\" \/>\r\n<figcaption>Billet and slab handling is the classic high-temperature lifting application \u2014 and the one where a wrong temperature assumption costs the most.<\/figcaption>\r\n<\/figure>\r\n<h2>Hot steel lifts less: the derating rule everyone forgets<\/h2>\r\n<p>There is a second, quieter reason hot work needs bigger magnets. As steel heats up, its magnetic permeability drops, so the same magnet grips the same section with <strong>less force<\/strong>. At around 600\u00b0C, suppliers report lifting force reduced substantially versus room temperature \u2014 datasheets and field experience often land near <strong>half<\/strong> the cold-state figure <span class=\"src\">(Truninger hot-load guidance; supplier hot-state ratings)<\/span>.<\/p>\r\n<p>Three consequences for your specification \u2014 and they matter twice as much on a crane magnet, where the load sits out of the operator\u2019s reach:<\/p>\r\n<ol>\r\n<li>Size the magnet on the <strong>hot-state<\/strong> safe working load, not the cold-state pull-off figure.<\/li>\r\n<li>Keep the established safety factor (commonly 3:1 for lifting magnets) applied to the <em>hot<\/em> number.<\/li>\r\n<li>Ask the supplier to state both figures in writing. If they can\u2019t, they haven\u2019t tested it.<\/li>\r\n<\/ol>\r\n<h2>Six questions to ask before you order a high-temperature lifting magnet<\/h2>\r\n<ol>\r\n<li><strong>What is the measured workpiece surface temperature at the lift point?<\/strong> Not the furnace temperature, not the line\u2019s nominal temperature \u2014 the steel where the pole face lands.<\/li>\r\n<li><strong>Continuous or short-time duty at that temperature?<\/strong> A 10-second pick from a 480\u00b0C line is a different machine from 20 minutes of dwell on a 480\u00b0C slab.<\/li>\r\n<li><strong>Which magnet material grades are inside, and what is each grade\u2019s max operating temperature?<\/strong> For an EPM this is the single most important number.<\/li>\r\n<li><strong>What is the hot-state SWL versus the cold-state SWL?<\/strong> In writing, with the test method.<\/li>\r\n<li><strong>What insulation class are the coil, potting and cables?<\/strong> For an electromagnet, also ask the duty cycle rating (TD%) your cycle pattern actually requires.<\/li>\r\n<li><strong>What shielding and cooling is included \u2014 and what does it cost to maintain?<\/strong> Water systems need checks; insulation pads wear and need replacement.<\/li>\r\n<\/ol>\r\n<p>In short, these six questions do double duty: they get you a magnet that lasts, and they quickly reveal which supplier has actually built for your temperature band.<\/p>\r\n<h2>Frequently asked questions<\/h2>\r\n<h3>How hot can a high temperature lifting magnet go?<\/h3>\r\n<details open=\"\">\r\n<summary>Can a lifting magnet pick up red-hot steel?<\/summary>\r\n<div class=\"faq-a\">\r\n<p>Yes \u2014 up to a point. Purpose-built high-temperature electromagnets routinely handle billets and slabs in the 600\u2013700\u00b0C range with heavy insulation and water cooling. Above roughly 768\u00b0C steel passes its Curie point and is no longer ferromagnetic, so no magnet of any type can grip it. The working ceiling for magnetic lifting is therefore about 700\u00b0C.<\/p>\r\n<\/div>\r\n<\/details><details>\r\n<summary>What temperature permanently damages an electro-permanent lifting magnet?<\/summary>\r\n<div class=\"faq-a\">\r\n<p>When the internal permanent magnets exceed their maximum operating temperature. For common neodymium grades that is 80\u2013220\u00b0C depending on grade, ~350\u00b0C for samarium-cobalt, and up to ~540\u00b0C for AlNiCo. Below the limit, any strength loss recovers on cooling; above it, the loss is permanent. This is why the magnet grade \u2014 not the housing \u2014 defines an EPM\u2019s true temperature rating.<\/p>\r\n<\/div>\r\n<\/details><details>\r\n<summary>Why does my magnet hold less when the steel is hot?<\/summary>\r\n<div class=\"faq-a\">\r\n<p>Two effects stack: the hot steel\u2019s magnetic permeability falls, so it accepts less flux, and the magnet itself weakens with temperature. The combined result at ~600\u00b0C is often around half the room-temperature lifting force. If you are selecting a magnetic lifter for hot work, always size on hot-state figures with the safety factor applied to them.<\/p>\r\n<\/div>\r\n<\/details>\r\n<h3>Choosing between technologies and sizing the magnet<\/h3>\r\n<details>\r\n<summary>Are electro-permanent magnets or electromagnets better for hot work?<\/summary>\r\n<div class=\"faq-a\">\r\n<p>Depends on the band. Up to ~350\u00b0C, an electro-permanent magnet usually wins: it holds with permanent magnets, uses ~95% less energy, cannot drop the load in a power cut, and barely heats itself. From ~500\u00b0C upward on continuous duty, a water-cooled electromagnet is the reliable choice because nothing inside it can be permanently demagnetized. Between 350\u00b0C and 500\u00b0C, it comes down to duty cycle and total cost \u2014 worth an engineering conversation either way.<\/p>\r\n<\/div>\r\n<\/details><details>\r\n<summary>Can water cooling be added to an electro-permanent lifting magnet?<\/summary>\r\n<div class=\"faq-a\">\r\n<p>Yes. Copper cooling tubes routed around the magnet body can hold ambient conditions near 400\u00b0C without affecting holding force (copper is non-magnetic), and custom water-cooled EPMs have been engineered for material temperatures up to about 650\u00b0C in automated lines. Treat these as <a href=\"https:\/\/hvr-magnet.com\/hvr-mag-lifting-magnet\/customized-lifting-magnets\/\">engineered-to-order solutions<\/a>: confirm with the manufacturer against your real duty cycle before specifying.<\/p>\r\n<\/div>\r\n<\/details>\r\n<div class=\"cta\">\r\n<h2>Tell us your temperature, not just your tonnage<\/h2>\r\n<p>Send us the workpiece type, its measured surface temperature at the lift point, section size and your cycle rate \u2014 we\u2019ll come back with the right technology for that band, including an honest recommendation if an electromagnet (not our product) is the better answer.<\/p>\r\n<a class=\"cta-btn\" href=\"https:\/\/hvr-magnet.com\/contact\/\">Request a free selection assessment<\/a> <a class=\"cta-btn ghost\" href=\"https:\/\/hvr-magnet.com\/electro-permanent-billet-and-slab-lifting-magnets\/\">See billet &amp; slab lifting magnets<\/a><\/div>\r\n<p class=\"src\">Key sources: Goudsmit Magnetics (Curie temperatures of magnetic materials); Truninger AG (hot-load handling guidance, steel ferromagnetism above ~768\u00b0C); Magswitch (permanent-magnet grade temperature limits); Kino Cranes \/ Voitto Crane (lifting electromagnet temperature grades and duty-cycle conventions); HVR MAG engineering data.<\/p>\r\n<script type=\"application\/ld+json\">\r\n{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[\r\n{\"@type\":\"Question\",\"name\":\"Can a lifting magnet pick up red-hot steel?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes, up to a point. Purpose-built high-temperature electromagnets handle billets and slabs in the 600-700 C range with heavy insulation and water cooling. Above roughly 768 C steel passes its Curie point and is no longer ferromagnetic, so no magnet can grip it.\"}},\r\n{\"@type\":\"Question\",\"name\":\"What temperature permanently damages an electro-permanent lifting magnet?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"When its internal permanent magnets exceed their maximum operating temperature: 80-220 C for neodymium grades, about 350 C for samarium-cobalt, and up to about 540 C for AlNiCo. Above the limit the strength loss is permanent.\"}},\r\n{\"@type\":\"Question\",\"name\":\"Why does my magnet hold less when the steel is hot?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Hot steel has lower magnetic permeability and the magnet itself weakens with temperature. At around 600 C the combined lifting force is often near half the room-temperature figure, so magnets must be sized on hot-state values.\"}},\r\n{\"@type\":\"Question\",\"name\":\"Are electro-permanent magnets or electromagnets better for hot work?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Up to about 350 C an electro-permanent magnet usually wins on energy use and safety. From about 500 C on continuous duty, a water-cooled electromagnet is the reliable choice because nothing inside it can be permanently demagnetized.\"}},\r\n{\"@type\":\"Question\",\"name\":\"Can water cooling be added to an electro-permanent lifting magnet?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. Copper cooling tubes around the magnet body support ambient conditions near 400 C without affecting holding force, and custom water-cooled designs have been engineered for material temperatures up to about 650 C in automated lines. Confirm with the manufacturer for your duty cycle.\"}}\r\n]}\r\n<\/script><\/div>\r\n\r\n<p>&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<p>A high temperature lifting magnet has hard thermal limits. Compare electro-permanent vs electromagnetic ratings by band, plus a 6-point buyer checklist.<\/p>","protected":false},"author":1,"featured_media":22613,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"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":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"default","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":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","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-opacity":"","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-opacity":"","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-opacity":"","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-opacity":"","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-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1],"tags":[],"class_list":["post-22616","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-lifting-magnet"],"acf":[],"_links":{"self":[{"href":"https:\/\/hvr-magnet.com\/ar\/wp-json\/wp\/v2\/posts\/22616","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hvr-magnet.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hvr-magnet.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hvr-magnet.com\/ar\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/hvr-magnet.com\/ar\/wp-json\/wp\/v2\/comments?post=22616"}],"version-history":[{"count":5,"href":"https:\/\/hvr-magnet.com\/ar\/wp-json\/wp\/v2\/posts\/22616\/revisions"}],"predecessor-version":[{"id":22629,"href":"https:\/\/hvr-magnet.com\/ar\/wp-json\/wp\/v2\/posts\/22616\/revisions\/22629"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hvr-magnet.com\/ar\/wp-json\/wp\/v2\/media\/22613"}],"wp:attachment":[{"href":"https:\/\/hvr-magnet.com\/ar\/wp-json\/wp\/v2\/media?parent=22616"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hvr-magnet.com\/ar\/wp-json\/wp\/v2\/categories?post=22616"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hvr-magnet.com\/ar\/wp-json\/wp\/v2\/tags?post=22616"}],"curies":[{"name":"\u0648\u0648\u0631\u062f\u0628\u0631\u064a\u0633","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}