{"id":1727,"date":"2026-09-20T08:42:53","date_gmt":"2026-09-20T08:42:53","guid":{"rendered":"https:\/\/ychltools.com\/milling-inserts\/sdmt\/sdmt-120408\/"},"modified":"2026-10-14T07:36:54","modified_gmt":"2026-10-14T07:36:54","slug":"sdmt-120408","status":"publish","type":"page","link":"https:\/\/ychltools.com\/zh\/milling-inserts\/sdmt\/sdmt-120408\/","title":{"rendered":"SDMT 120408 \u94e3\u524a\u5200\u7247"},"content":{"rendered":"\n<main class=\"ychl-catalog-v4 ychl-parent-page\" data-kind=\"milling\">\n      <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>\n      <div class=\"ychl-catalog-shell\">\n        <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\/sdmt\/\">SDMT<\/a><span>\/<\/span><span aria-current=\"page\">SDMT 120408<\/span><\/nav>\n        <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-3c6d740fd2fc8c81.png\" alt=\"SDMT 120408 milling insert\"><\/div><div class=\"ychl-parent-intro\"><h1>SDMT 120408 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>SDMT120408<\/dd><\/div><div><dt>Insert Size<\/dt><dd>120408<\/dd><\/div><div><dt>Shape<\/dt><dd>S \u2014 Square<\/dd><\/div><div><dt>Radius<\/dt><dd>0.8 mm<\/dd><\/div><div><dt>Thickness<\/dt><dd>4.76 mm<\/dd><\/div><div><dt>d \/ IC<\/dt><dd>12.7 mm<\/dd><\/div><div><dt>Relief Angle<\/dt><dd>15\u00b0<\/dd><\/div><\/dl><\/div><\/section>\n        <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-k\" data-parent-material=\"K\"><b>K<\/b><span>Cast Iron<\/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=\"Chamfer Milling\">Chamfer Milling<\/button><button type=\"button\" data-parent-application=\"Face Milling\">Face Milling<\/button><button type=\"button\" data-parent-application=\"Helical Milling\">Helical Milling<\/button><button type=\"button\" data-parent-application=\"Plunge Milling\">Plunge Milling<\/button><button type=\"button\" data-parent-application=\"Pocket Milling\">Pocket Milling<\/button><button type=\"button\" data-parent-application=\"Ramp Milling\">Ramp Milling<\/button><button type=\"button\" data-parent-application=\"Slot Milling\">Slot Milling<\/button><\/div><\/fieldset><label>3. Brand<select data-parent-brand><option value=\"\">All Brands<\/option><option>Achteck<\/option><\/select><\/label><\/div><\/section>\n        <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,K,S\" data-application=\"Chamfer Milling,Face Milling,Helical Milling,Plunge Milling,Pocket Milling,Ramp Milling,Slot Milling\">\n          <div class=\"ychl-brand-match-image\"><img decoding=\"async\" src=\"https:\/\/ychltools.com\/wp-content\/uploads\/2026\/09\/ychl-product-std-3c6d740fd2fc8c81.png\" alt=\"Achteck SDMT120408 insert\" loading=\"lazy\"><\/div>\n          <div class=\"ychl-brand-match-copy\"><div class=\"ychl-brand-card-heading\"><strong>Achteck<\/strong><span class=\"ychl-brand-option-count\" data-match-count>17 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-k\" title=\"Cast Iron\">K<\/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>Chamfer Milling Face Milling Helical Milling Plunge Milling Pocket Milling Ramp Milling Slot Milling<\/span><\/div><\/div>\n          <div class=\"ychl-brand-match-action\"><a href=\"\/milling-inserts\/sdmt\/sdmt-120408\/achteck\/\">View Options <span aria-hidden=\"true\">\u2192<\/span><\/a><\/div>\n        <\/article><\/div><\/section>\n      <\/div>\n      <script type=\"application\/json\" class=\"ychl-parent-option-data\">[{\"brand\":\"Achteck\",\"material\":[\"P\",\"K\"],\"application\":[\"Face Milling\"]},{\"brand\":\"Achteck\",\"material\":[\"K\"],\"application\":[\"Face Milling\"]},{\"brand\":\"Achteck\",\"material\":[\"K\"],\"application\":[\"Face Milling\"]},{\"brand\":\"Achteck\",\"material\":[\"P\",\"M\"],\"application\":[\"Face Milling\"]},{\"brand\":\"Achteck\",\"material\":[\"P\",\"M\",\"S\"],\"application\":[\"Face Milling\"]},{\"brand\":\"Achteck\",\"material\":[\"P\",\"M\",\"S\"],\"application\":[\"Face Milling\"]},{\"brand\":\"Achteck\",\"material\":[\"K\"],\"application\":[\"Face Milling\",\"Chamfer Milling\",\"Slot Milling\",\"Ramp Milling\",\"Helical Milling\",\"Plunge Milling\",\"Pocket Milling\"]},{\"brand\":\"Achteck\",\"material\":[\"K\"],\"application\":[\"Face Milling\",\"Chamfer Milling\",\"Slot Milling\",\"Ramp Milling\",\"Helical Milling\",\"Plunge Milling\",\"Pocket Milling\"]},{\"brand\":\"Achteck\",\"material\":[\"P\",\"M\"],\"application\":[\"Face Milling\",\"Chamfer Milling\",\"Slot Milling\",\"Ramp Milling\",\"Helical Milling\",\"Plunge Milling\",\"Pocket Milling\"]},{\"brand\":\"Achteck\",\"material\":[\"P\",\"M\",\"S\"],\"application\":[\"Face Milling\",\"Chamfer Milling\",\"Slot Milling\",\"Ramp Milling\",\"Helical Milling\",\"Plunge Milling\",\"Pocket Milling\"]},{\"brand\":\"Achteck\",\"material\":[\"P\",\"M\",\"S\"],\"application\":[\"Face Milling\",\"Chamfer Milling\",\"Slot Milling\",\"Ramp Milling\",\"Helical Milling\",\"Plunge Milling\",\"Pocket Milling\"]},{\"brand\":\"Achteck\",\"material\":[\"K\"],\"application\":[\"Face Milling\",\"Chamfer Milling\",\"Slot Milling\",\"Ramp Milling\",\"Helical Milling\",\"Plunge Milling\",\"Pocket Milling\"]},{\"brand\":\"Achteck\",\"material\":[\"P\",\"K\"],\"application\":[\"Face Milling\",\"Chamfer Milling\",\"Slot Milling\",\"Ramp Milling\",\"Helical Milling\",\"Plunge Milling\",\"Pocket Milling\"]},{\"brand\":\"Achteck\",\"material\":[\"K\"],\"application\":[\"Face Milling\",\"Chamfer Milling\",\"Slot Milling\",\"Ramp Milling\",\"Helical Milling\",\"Plunge Milling\",\"Pocket Milling\"]},{\"brand\":\"Achteck\",\"material\":[\"P\",\"M\"],\"application\":[\"Face Milling\",\"Chamfer Milling\",\"Slot Milling\",\"Ramp Milling\",\"Helical Milling\",\"Plunge Milling\",\"Pocket Milling\"]},{\"brand\":\"Achteck\",\"material\":[\"P\",\"M\",\"S\"],\"application\":[\"Face Milling\",\"Chamfer Milling\",\"Slot Milling\",\"Ramp Milling\",\"Helical Milling\",\"Plunge Milling\",\"Pocket Milling\"]},{\"brand\":\"Achteck\",\"material\":[\"P\",\"M\",\"S\"],\"application\":[\"Face Milling\",\"Chamfer Milling\",\"Slot Milling\",\"Ramp Milling\",\"Helical Milling\",\"Plunge Milling\",\"Pocket Milling\"]}]<\/script>\n    <\/main>\n\n","protected":false},"excerpt":{"rendered":"<p>\u5bf9\u6bd4 materials, applications and brands for SDMT 120408.<\/p>","protected":false},"author":1,"featured_media":0,"parent":1714,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":"","_ychl_meta_desc":"SDMT 120408 milling inserts \u2014 17 options, for K\/M\/P\/S, face milling to ramp milling cuts, from Achteck. Cutting parameters and RFQ in 24 h.","_ychl_model_html":"<p><strong>SDMT 120408<\/strong> is a square 90\u00b0 milling insert with 8 usable cutting edges, used mainly for heavy roughing, square shoulders and interrupted cuts. We list <strong>17<\/strong> stock-keeping variants of it from Achteck, covering Steel, Stainless steel, Cast iron, 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 SDMT 120408.<\/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\/sdmt\/\">SDMT<\/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>square 90\u00b0 (S)<\/td><\/tr>\n<tr><th>Usable cutting edges<\/th><td>8<\/td><\/tr>\n<tr><th>Inscribed circle (IC)<\/th><td>12.7 mm<\/td><\/tr>\n<tr><th>Thickness (S)<\/th><td>4.76 mm<\/td><\/tr>\n<tr><th>Nose radius (RE)<\/th><td>0.8 mm<\/td><\/tr>\n<tr><th>Cutting edge length (L)<\/th><td>11.1 mm<\/td><\/tr>\n<tr><th>Fixing hole diameter (D1)<\/th><td>4.4\u20135.5 mm (typically 4.4 mm)<\/td><\/tr>\n<tr><th>Hand<\/th><td>Neutral<\/td><\/tr>\n<tr><th>Variants in stock<\/th><td>17<\/td><\/tr>\n<tr><th>Brands<\/th><td>Achteck<\/td><\/tr>\n<\/tbody><\/table><\/div>\n<h2>Cutting data<\/h2>\n<p>The 17 variants of SDMT 120408 listed here are supplied without a full published cutting-data set, so we do not publish one. Ask us for the specific grade and chipbreaker you are considering and we will send the manufacturer's window for it.<\/p>\n<h2>Carbide grades available<\/h2>\n<p>17 variants of SDMT 120408 are stocked in these grades: <strong>AP251K<\/strong>, <strong>AP251U<\/strong>, <strong>AP403M<\/strong>, <strong>AC251P<\/strong>, <strong>AC151K<\/strong>, <strong>AP351M<\/strong>, <strong>AC301K<\/strong>, <strong>AP351U<\/strong>.<\/p>\n<p>Across this range the grades specified most often are AP251K, AP251U, AP403M, AC251P, AC151K. 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 SDMT 120408: MM4, MR2.<\/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>Face milling<\/li>\n<li>Chamfer milling<\/li>\n<li>Slot milling<\/li>\n<li>Ramp milling<\/li>\n<li>Helical interpolation<\/li>\n<li>Plunge milling<\/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\/sdmt\/sdmt-09t308\/\">SDMT 09T308<\/a>, <a href=\"https:\/\/ychltools.com\/milling-inserts\/sdmt\/sdmt-09t320\/\">SDMT 09T320<\/a>, <a href=\"https:\/\/ychltools.com\/milling-inserts\/sdmt\/sdmt-09t304\/\">SDMT 09T304<\/a>, <a href=\"https:\/\/ychltools.com\/milling-inserts\/sdmt\/sdmt-120412\/\">SDMT 120412<\/a>, <a href=\"https:\/\/ychltools.com\/milling-inserts\/sdmt\/sdmt-1205ztn\/\">SDMT 1205ZTN<\/a>, <a href=\"https:\/\/ychltools.com\/milling-inserts\/sdmt\/sdmt-1505ztn\/\">SDMT 1505ZTN<\/a>, <a href=\"https:\/\/ychltools.com\/milling-inserts\/sdmt\/sdmt-120425\/\">SDMT 120425<\/a>, <a href=\"https:\/\/ychltools.com\/milling-inserts\/sdmt\/sdmt-120420\/\">SDMT 120420<\/a><\/li>\n<li><a href=\"https:\/\/ychltools.com\/milling-inserts\/sdmt\/\">All SDMT<\/a><\/li>\n<li><a href=\"https:\/\/ychltools.com\/milling-inserts\/sdmt\/sdmt-120408\/achteck\/\">Achteck SDMT 120408<\/a> (17 variants)<\/li>\n<li><a href=\"\/resources\/iso-insert-code-decoder\/\">Decode the SDMT 120408 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-1727","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/ychltools.com\/zh\/wp-json\/wp\/v2\/pages\/1727","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=1727"}],"version-history":[{"count":4,"href":"https:\/\/ychltools.com\/zh\/wp-json\/wp\/v2\/pages\/1727\/revisions"}],"predecessor-version":[{"id":2118,"href":"https:\/\/ychltools.com\/zh\/wp-json\/wp\/v2\/pages\/1727\/revisions\/2118"}],"up":[{"embeddable":true,"href":"https:\/\/ychltools.com\/zh\/wp-json\/wp\/v2\/pages\/1714"}],"wp:attachment":[{"href":"https:\/\/ychltools.com\/zh\/wp-json\/wp\/v2\/media?parent=1727"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}