{"id":7992,"date":"2026-09-28T17:38:56","date_gmt":"2026-09-28T17:38:56","guid":{"rendered":"https:\/\/ychltools.com\/milling-inserts\/rdmt\/rdmt-12t3\/"},"modified":"2026-10-14T07:44:56","modified_gmt":"2026-10-14T07:44:56","slug":"rdmt-12t3","status":"publish","type":"page","link":"https:\/\/ychltools.com\/zh\/milling-inserts\/rdmt\/rdmt-12t3\/","title":{"rendered":"RDMT 12T3 \u94e3\u524a\u5200\u7247"},"content":{"rendered":"\n<main class=\"ychl-catalog-v4 ychl-parent-page\" data-kind=\"milling\"><nav class=\"ychl-type-tabs\" aria-label=\"Product type\"><a class=\"\" href=\"\/products\/\">All Inserts<\/a><a class=\"\" href=\"\/turning-inserts\/\">Turning Inserts<\/a><a class=\"is-active\" href=\"\/milling-inserts\/\">Milling Inserts<\/a><\/nav><div class=\"ychl-catalog-shell\"><nav class=\"ychl-crumbs\" aria-label=\"Breadcrumb\"><a href=\"\/products\/\">Products<\/a><span>\/<\/span><a href=\"\/milling-inserts\/\">Milling Inserts<\/a><span>\/<\/span><a href=\"\/milling-inserts\/rdmt\/\">RDMT<\/a><span>\/<\/span><span aria-current=\"page\">RDMT 12T3<\/span><\/nav><section class=\"ychl-parent-hero\"><div class=\"ychl-parent-image\"><img decoding=\"async\" src=\"https:\/\/ychltools.com\/wp-content\/uploads\/2026\/09\/ychl-product-std-d14acb4b245042ae.png\" alt=\"RDMT 12T3 milling insert\"><\/div><div class=\"ychl-parent-intro\"><h1>RDMT 12T3 Milling Inserts<\/h1><p>Compare suitable materials and applications, then choose a brand to view the exact SKUs.<\/p><dl class=\"ychl-shared-specs\"><div><dt>ISO Code<\/dt><dd>RDMT12T3<\/dd><\/div><div><dt>Insert Size<\/dt><dd>12T3<\/dd><\/div><div><dt>Shape<\/dt><dd>R<\/dd><\/div><\/dl><\/div><\/section><section class=\"ychl-option-finder\"><div class=\"ychl-section-heading\"><h2>Find the Right Option<\/h2><p>Select the workpiece material and application. Brand remains optional.<\/p><\/div><div class=\"ychl-option-grid\"><fieldset><legend>1. Workpiece Material<\/legend><div class=\"ychl-material-choices\"><button type=\"button\" class=\"ychl-mat-choice ychl-mat-p\" data-parent-material=\"P\"><b>P<\/b><span>Steel<\/span><\/button><button type=\"button\" class=\"ychl-mat-choice ychl-mat-m\" data-parent-material=\"M\"><b>M<\/b><span>Stainless Steel<\/span><\/button><button type=\"button\" class=\"ychl-mat-choice ychl-mat-s\" data-parent-material=\"S\"><b>S<\/b><span>Heat-resistant Alloys<\/span><\/button><\/div><\/fieldset><fieldset><legend>2. Machining Operation<\/legend><div class=\"ychl-stage-choices\"><button type=\"button\" data-parent-application=\"Profile Milling\">Profile Milling<\/button><button type=\"button\" data-parent-application=\"Face Milling\">Face Milling<\/button><button type=\"button\" data-parent-application=\"Ramp Milling\">Ramp Milling<\/button><button type=\"button\" data-parent-application=\"Helical Interpolation\">Helical Interpolation<\/button><button type=\"button\" data-parent-application=\"Pocket Milling\">Pocket Milling<\/button><\/div><\/fieldset><label>3. Brand<select data-parent-brand><option value=\"\">All Brands<\/option><option>Achteck<\/option><\/select><\/label><\/div><\/section><section class=\"ychl-matching-brands\"><div class=\"ychl-section-heading\"><h2>Brands<\/h2><p data-match-summary>All available options for this parent model.<\/p><\/div><div class=\"ychl-brand-match-list\"><article class=\"ychl-brand-match\" data-brand=\"Achteck\" data-material=\"P,M,S\" data-application=\"Profile Milling,Face Milling,Ramp Milling,Helical Interpolation,Pocket Milling\"><div class=\"ychl-brand-match-image\"><img decoding=\"async\" src=\"https:\/\/ychltools.com\/wp-content\/uploads\/2026\/09\/ychl-product-std-d14acb4b245042ae.png\" alt=\"Achteck RDMT12T3 insert\" loading=\"lazy\"><\/div><div class=\"ychl-brand-match-copy\"><div class=\"ychl-brand-card-heading\"><strong>Achteck<\/strong><span class=\"ychl-brand-option-count\" data-match-count>2 Options<\/span><\/div><div class=\"ychl-brand-card-fact\"><b>Workpiece Material<\/b><span class=\"ychl-materials\"><span class=\"ychl-mat ychl-mat-p\" title=\"Steel\">P<\/span><span class=\"ychl-mat ychl-mat-m\" title=\"Stainless Steel\">M<\/span><span class=\"ychl-mat ychl-mat-s\" title=\"Heat-resistant Alloys\">S<\/span><\/span><\/div><div class=\"ychl-brand-card-fact\"><b>Machining Operations<\/b><span>Profile Milling \u00b7 Face Milling \u00b7 Ramp Milling \u00b7 Helical Interpolation \u00b7 Pocket Milling<\/span><\/div><\/div><div class=\"ychl-brand-match-action\"><a href=\"\/milling-inserts\/rdmt\/rdmt-12t3\/achteck\/\">View Options <span aria-hidden=\"true\">\u2192<\/span><\/a><\/div><\/article><\/div><\/section><\/div><script type=\"application\/json\" class=\"ychl-parent-option-data\">[{\"brand\":\"Achteck\",\"material\":[\"P\",\"M\"],\"application\":[\"Profile Milling\",\"Face Milling\",\"Ramp Milling\",\"Helical Interpolation\",\"Pocket Milling\"]},{\"brand\":\"Achteck\",\"material\":[\"P\",\"M\",\"S\"],\"application\":[\"Profile Milling\",\"Face Milling\",\"Ramp Milling\",\"Helical Interpolation\",\"Pocket Milling\"]}]<\/script><\/main>\n","protected":false},"excerpt":{"rendered":"<p>All InsertsTurning InsertsMilling Inserts Products\/Milling Inserts\/RDMT\/RDMT 12T3 RDMT 12T3 Milling Inserts Compare suitable materials and applications, then choose a brand to view the exact SKUs. ISO Code RDMT12T3 Insert Size 12T3 Shape R Find the Right Option Select the workpiece material and application. Brand remains optional. 1. Workpiece Material PSteelMStainless SteelSHeat-resistant Alloys 2. Machining Operation [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":7855,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":"","_ychl_meta_desc":"RDMT 12T3 carbide milling inserts \u2014 2 options, for M\/P\/S (stainless, steel, heat-resistant alloys). Cutting data + RFQ.","_ychl_model_html":"<p><strong>RDMT 12T3<\/strong> is a round milling insert with many usable cutting edges, used mainly for the strongest edge available \u2014 roughing, hard skins, long reach. We list <strong>2<\/strong> stock-keeping variants of it from Achteck, covering Steel, Stainless steel, Heat-resistant alloys.<\/p>\n<p>Milling inserts are chosen to match the cutter body \u2014 lead angle, number of teeth and the geometry designated by the manufacturer. The <a href=\"\/resources\/milling-insert-selection-guide\/\">milling insert selection guide<\/a> walks through that; this page lists what we actually hold in RDMT 12T3.<\/p>\n<h2>Geometry and dimensions<\/h2>\n<div class=\"ychl-art-table\"><table><tbody>\n<tr><th>Insert family<\/th><td><a href=\"https:\/\/ychltools.com\/milling-inserts\/rdmt\/\">RDMT<\/a><\/td><\/tr>\n<tr><th>Category<\/th><td><a href=\"https:\/\/ychltools.com\/milling-inserts\/\">Milling Inserts<\/a><\/td><\/tr>\n<tr><th>Shape<\/th><td>round (R)<\/td><\/tr>\n<tr><th>Usable cutting edges<\/th><td>many<\/td><\/tr>\n<tr><th>Inscribed circle (IC)<\/th><td>12 mm<\/td><\/tr>\n<tr><th>Thickness (S)<\/th><td>3.97 mm<\/td><\/tr>\n<tr><th>Fixing hole diameter (D1)<\/th><td>4.4 mm<\/td><\/tr>\n<tr><th>Hand<\/th><td>Neutral<\/td><\/tr>\n<tr><th>Variants in stock<\/th><td>2<\/td><\/tr>\n<tr><th>Brands<\/th><td>Achteck<\/td><\/tr>\n<\/tbody><\/table><\/div>\n<h2>Carbide grades available<\/h2>\n<p>2 variants of RDMT 12T3 are stocked in these grades: <strong>AP251U<\/strong>, <strong>AP351U<\/strong>.<\/p>\n<p>Across this range the grades specified most often are AP251U, AP351U. Within one brand's range, a higher middle digit usually means a tougher grade \u2014 better on interrupted cuts, slightly less wear resistant. See <a href=\"\/resources\/carbide-grades-explained\/\">carbide grades explained<\/a> for how to read the names.<\/p>\n<h2>Chipbreaker geometries<\/h2>\n<p>Chipbreakers stocked for RDMT 12T3: MM3.<\/p>\n<p>For milling, the geometry code marks the intended duty \u2014 sharper for light cuts and better finish, stronger for scale and interruption. <a href=\"\/resources\/milling-insert-selection-guide\/\">Milling insert selection guide<\/a>.<\/p>\n<h2>Typical applications<\/h2>\n<ul>\n<li>Profile Milling<\/li>\n<li>Face Milling<\/li>\n<li>Ramp Milling<\/li>\n<li>Helical Interpolation<\/li>\n<li>Pocket Milling<\/li>\n<\/ul>\n<p>For more on cutting steel, see our <a href=\"\/resources\/iso-513-material-groups\/\">material-specific guide<\/a>.<\/p>\n<h2>Related<\/h2><ul>\n<li>Same family: <a href=\"https:\/\/ychltools.com\/milling-inserts\/rdmt\/rdmt-1003\/\">RDMT 1003<\/a>, <a href=\"https:\/\/ychltools.com\/milling-inserts\/rdmt\/rdmt-1604\/\">RDMT 1604<\/a><\/li>\n<li><a href=\"https:\/\/ychltools.com\/milling-inserts\/rdmt\/\">All RDMT<\/a><\/li>\n<li><a href=\"https:\/\/ychltools.com\/milling-inserts\/rdmt\/rdmt-12t3\/achteck\/\">Achteck RDMT 12T3<\/a> (2 variants)<\/li>\n<li><a href=\"\/resources\/iso-insert-code-decoder\/\">Decode the RDMT 12T3 designation<\/a><\/li>\n<li><a href=\"\/resources\/cutting-parameters-calculator\/\">Cutting speed to rpm calculator<\/a><\/li>\n<li><a href=\"\/resources\/milling-insert-selection-guide\/\">Milling insert selection guide<\/a><\/li>\n<\/ul>"},"class_list":["post-7992","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/ychltools.com\/zh\/wp-json\/wp\/v2\/pages\/7992","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ychltools.com\/zh\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/ychltools.com\/zh\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/ychltools.com\/zh\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ychltools.com\/zh\/wp-json\/wp\/v2\/comments?post=7992"}],"version-history":[{"count":1,"href":"https:\/\/ychltools.com\/zh\/wp-json\/wp\/v2\/pages\/7992\/revisions"}],"predecessor-version":[{"id":9808,"href":"https:\/\/ychltools.com\/zh\/wp-json\/wp\/v2\/pages\/7992\/revisions\/9808"}],"up":[{"embeddable":true,"href":"https:\/\/ychltools.com\/zh\/wp-json\/wp\/v2\/pages\/7855"}],"wp:attachment":[{"href":"https:\/\/ychltools.com\/zh\/wp-json\/wp\/v2\/media?parent=7992"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}