{"id":2236,"date":"2026-09-21T17:28:05","date_gmt":"2026-09-21T17:28:05","guid":{"rendered":"https:\/\/ychltools.com\/resources\/articles\/how-to-choose-turning-inserts-for-304-stainless-steel\/"},"modified":"2026-10-14T08:11:21","modified_gmt":"2026-10-14T08:11:21","slug":"how-to-choose-turning-inserts-for-304-stainless-steel","status":"publish","type":"page","link":"https:\/\/ychltools.com\/zh\/resources\/articles\/how-to-choose-turning-inserts-for-304-stainless-steel\/","title":{"rendered":"How to Choose \u8f66\u524a\u5200\u7247 for 304 \u4e0d\u9508\u94a2"},"content":{"rendered":"<style id=\"ychl-resources-v1\">\nbody:has(.ychl-resources-page) .wp-block-post-title{display:none!important}\nbody:has(.ychl-resources-page) main.wp-block-group,body:has(.ychl-resources-page) .wp-block-post-content{margin-block:0!important;max-width:none!important;padding-block:0!important;width:100%!important}\nbody:has(.ychl-resources-page) .wp-site-blocks>main.wp-block-group>.wp-block-group.alignfull{padding-block:0!important}\n.ychl-resources-page{box-sizing:border-box;color:#183046;margin:0 auto;max-width:1440px;padding:30px 32px 64px}\n.ychl-resources-page *{box-sizing:border-box}\n.ychl-resources-page h1{font-size:clamp(34px,3.1vw,45px);line-height:1.16;margin:0 0 10px}\n.ychl-resources-page h2{font-size:clamp(23px,2vw,29px);margin:0 0 14px}\n.ychl-resources-page h3{font-size:18px;margin:0 0 5px}\n.ychl-resources-page p,.ychl-resources-page li{font-size:16px;line-height:1.6}\n.ychl-resources-page p{color:#526478;margin:0 0 14px}\n.ychl-resources-page a{color:#0877a4}\n.ychl-resource-crumb{color:#627588;font-size:13px;margin-bottom:14px}\n.ychl-resource-intro{border-bottom:1px solid #d9e2e9;padding-bottom:19px}\n.ychl-resource-index{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 26px;margin:16px 0 28px}\n.ychl-resource-index a{border-bottom:1px solid #dce5eb;color:#183046;display:block;font-size:18px;font-weight:700;padding:16px 2px;text-decoration:none}\n.ychl-resource-index a::after{color:#0877a4;content:'\u2192';float:right}\n.ychl-resource-index a:hover{background:#f6f9fa}\n.ychl-resource-section{border-top:1px solid #dce5eb;padding:24px 0 6px}\n.ychl-resource-section ul{margin:0 0 18px;padding-left:22px}\n.ychl-resource-section li{margin:6px 0}\n.ychl-resource-rows{border-top:1px solid #dce5eb;margin:22px 0 0}\n.ychl-resource-row{border-bottom:1px solid #dce5eb;display:grid;gap:22px;grid-template-columns:250px minmax(0,1fr);padding:17px 0}\n.ychl-resource-row p{margin:0}\n.ychl-resource-actions{display:flex;flex-wrap:wrap;gap:10px;margin:20px 0 0}\n.ychl-resource-actions a{border:1px solid #b5c9d6;border-radius:6px;display:inline-block;font-size:14px;font-weight:700;padding:10px 15px;text-decoration:none}\n.ychl-resource-actions a:first-child{background:#102a43;border-color:#102a43;color:#fff}\n.ychl-resource-faq details{border-bottom:1px solid #dce5eb;padding:15px 0}\n.ychl-resource-faq summary{color:#183046;cursor:pointer;font-size:17px;font-weight:700}\n.ychl-resource-faq details p{margin:12px 0 0;max-width:850px}\n@media(max-width:1100px){.ychl-resources-page{padding-inline:24px}}\n@media(max-width:700px){.ychl-resources-page{padding:22px 16px 44px}.ychl-resource-index,.ychl-resource-row{grid-template-columns:1fr}.ychl-resource-row{gap:3px}}\n<\/style>\n<style id=\"ychl-resources-update-v2\">\nbody:has(.ychl-resources-page) .wp-site-blocks>main.wp-block-group,body:has(.ychl-resources-page) .wp-site-blocks>main.wp-block-group>.wp-block-group.alignfull,body:has(.ychl-resources-page) .wp-block-post-content,body:has(.ychl-resources-page) .wp-block-post-content>.wp-block-html{height:auto!important;margin:0!important;min-height:0!important;padding-block:0!important}\nbody:has(.ychl-resources-page) .wp-site-blocks>main.wp-block-group>.wp-block-group.alignfull,body:has(.ychl-resources-page) .wp-block-post-content{max-width:none!important;width:100%!important}\n.ychl-resources-page{padding-top:38px}\n.ychl-resource-index{gap:0 28px}\n.ychl-resource-index a{align-items:baseline;display:flex;font-size:17px;gap:12px;justify-content:space-between;padding:13px 2px}\n.ychl-resource-index a::after{float:none}\n.ychl-resource-entry{border-bottom:1px solid #dce5eb;display:grid;gap:15px;grid-template-columns:minmax(0,1fr) auto;padding:15px 0}\n.ychl-resource-entry h3{font-size:18px;margin-bottom:3px}\n.ychl-resource-entry p{font-size:14px;line-height:1.5;margin:0}\n.ychl-resource-entry>a{align-self:center;font-size:14px;font-weight:700;white-space:nowrap}\n.ychl-resource-note{font-size:14px!important}\n.ychl-faq-item{border-bottom:1px solid #dce5eb;padding:17px 0}\n.ychl-faq-item h2{font-size:18px;font-weight:700;line-height:1.35;margin:0 0 7px}\n.ychl-faq-item p{font-size:16px;line-height:1.6;margin:0;max-width:980px}\n.ychl-article-page{max-width:1020px}\n.ychl-article-page .ychl-resource-intro{margin-bottom:22px}\n.ychl-article-page .ychl-resource-intro p{max-width:880px}\n.ychl-article-page h2{border-top:1px solid #dce5eb;font-size:26px;line-height:1.25;margin:33px 0 12px;padding-top:25px}\n.ychl-article-page h3{font-size:19px;line-height:1.3;margin:23px 0 8px}\n.ychl-article-page p,.ychl-article-page li{color:#354d60;font-size:16px;line-height:1.67}\n.ychl-article-page p{margin:0 0 15px}\n.ychl-article-page ol{padding-left:23px}\n.ychl-article-page li{padding-left:3px;margin:7px 0}\n.ychl-article-lead{color:#223b50!important;font-size:18px!important;line-height:1.62!important}\n.ychl-article-toc{border-bottom:1px solid #dce5eb;border-top:1px solid #dce5eb;display:flex;flex-wrap:wrap;gap:8px 17px;margin:22px 0 10px;padding:12px 0}\n.ychl-article-toc strong{font-size:14px}\n.ychl-article-toc a{font-size:14px}\n.ychl-article-table-wrap{margin:18px 0 24px;overflow-x:auto}\n.ychl-article-table-wrap table{border-collapse:collapse;font-size:15px;line-height:1.5;min-width:660px;width:100%}\n.ychl-article-table-wrap th{background:#eaf0f4;color:#183046;font-size:14px;padding:11px 12px;text-align:left}\n.ychl-article-table-wrap td{border-bottom:1px solid #dce5eb;color:#354d60;padding:11px 12px;vertical-align:top}\n.ychl-article-table-wrap th:first-child{width:170px}\n.ychl-article-sources{margin-top:30px}\n.ychl-article-sources h2{font-size:20px}\n.ychl-article-sources p{font-size:14px}\n@media(max-width:700px){.ychl-resources-page{padding-top:25px}.ychl-resource-entry{gap:5px;grid-template-columns:1fr}.ychl-faq-item h2{font-size:17px}.ychl-faq-item p{font-size:15px}.ychl-article-page h2{font-size:23px}}\n<\/style>\n<style id=\"ychl-article-readability-v1\">\n\/* The article's reading width deliberately overrides the shared 1440px container. *\/\nbody:has(.ychl-article-page) .wp-block-post-content>.ychl-article-page{box-sizing:border-box!important;width:100%!important;max-width:1040px!important;margin-inline:auto!important;padding:26px 32px 58px!important}\n.ychl-article-page>.ychl-resource-crumb{margin-bottom:16px}\n.ychl-article-page>.ychl-resource-intro{border-bottom:1px solid #dce5eb;margin-bottom:27px;max-width:1000px;padding-bottom:18px}\n.ychl-article-page .ychl-resource-intro h1{font-size:clamp(44px,3.2vw,52px);letter-spacing:-.025em;line-height:1.13;margin:0 0 10px;max-width:1000px}\n.ychl-article-page .ychl-resource-intro p{font-size:17px;line-height:1.58;margin:0;max-width:920px}\n.ychl-article-page>:not(.ychl-resource-crumb):not(.ychl-resource-intro){max-width:920px;margin-left:auto;margin-right:auto}\n.ychl-article-page>p,.ychl-article-page p,.ychl-article-page li{font-size:17px;line-height:1.7}\n.ychl-article-page>p,.ychl-article-page p{margin-bottom:20px}\n.ychl-article-page .ychl-article-lead{font-size:18px!important;line-height:1.7!important;margin-bottom:22px!important}\n.ychl-article-page .ychl-article-toc{border:0;display:flex;flex-wrap:wrap;gap:8px 16px;margin-top:13px;margin-bottom:27px;padding:6px 0}\n.ychl-article-page .ychl-article-toc strong{color:#183046;font-size:14px;white-space:nowrap}\n.ychl-article-page .ychl-article-toc a{font-size:14px;white-space:nowrap}\n.ychl-article-page>h2{border:0;font-size:27px;line-height:1.28;margin-top:44px;margin-bottom:18px;padding:0}\n.ychl-article-page>h3{font-size:20px;line-height:1.35;margin-top:31px;margin-bottom:11px}\n.ychl-article-page .ychl-article-table-wrap{margin-top:20px;margin-bottom:26px;max-width:920px;overflow-x:auto}\n.ychl-article-page .ychl-article-table-wrap table{font-size:15.5px;line-height:1.55;min-width:650px;width:100%}\n.ychl-article-page .ychl-article-table-wrap th{font-size:15px;padding:12px 14px}\n.ychl-article-page .ychl-article-table-wrap td{padding:13px 14px}\n.ychl-article-page .ychl-article-sources{border-top:1px solid #dce5eb;margin-top:42px;padding-top:21px}\n.ychl-article-page .ychl-article-sources h2{border:0;font-size:21px;margin:0 0 12px;padding:0}\n@media(max-width:767px){\n body:has(.ychl-article-page) .wp-block-post-content>.ychl-article-page{padding:20px 16px 44px!important}\n .ychl-article-page .ychl-resource-intro h1{font-size:clamp(34px,8vw,42px)}\n .ychl-article-page .ychl-resource-intro p{font-size:16px}\n .ychl-article-page>p,.ychl-article-page p,.ychl-article-page li{font-size:16.5px}\n .ychl-article-page>h2{font-size:24px;margin-top:38px}\n .ychl-article-page .ychl-article-toc a{white-space:normal}\n}\n\n\/* Keep prose and tables together at the lower end of the approved 860\u2013980px range. *\/\n.ychl-article-page>p,.ychl-article-page>ol,.ychl-article-page>h2,.ychl-article-page>h3,.ychl-article-page>.ychl-article-toc,.ychl-article-page>.ychl-article-sources{max-width:860px!important}\n.ychl-article-page>.ychl-article-table-wrap{max-width:860px!important}\n\n<\/style>\n<article class=\"ychl-resources-page ychl-article-page\"><div class=\"ychl-resource-crumb\"><a href=\"\/zh\/\">\u9996\u9875<\/a> \/ <a href=\"\/zh\/resources\/\">\u8d44\u6599\u4e2d\u5fc3<\/a> \/ <a href=\"\/zh\/resources\/articles\/\">\u6587\u7ae0<\/a><\/div><header class=\"ychl-resource-intro\"><h1>How to Choose \u8f66\u524a\u5200\u7247 for 304 \u4e0d\u9508\u94a2<\/h1><p>A practical selection sequence for 304 stainless steel: material, machining stage, cut condition, geometry, grade and chipbreaker\u2014without invented cutting data.<\/p><\/header>\n<p class=\"ychl-article-lead\">For 304 stainless steel, start with the workpiece and the cut\u2014not a brand&#8217;s grade name. Establish the machining stage and whether the tool remains in contact with the material. Then compare geometries, grades and chipbreakers available for the exact insert shape that fits your holder.<\/p>\n<nav class=\"ychl-article-toc\" aria-label=\"On this page\"><strong>On this page:<\/strong><a href=\"#why-304\">Why 304 needs care<\/a><a href=\"#stage-and-cut\">Stage and cut condition<\/a><a href=\"#grade-and-chipbreaker\">\u724c\u53f7 and chipbreaker<\/a><a href=\"#troubleshooting\">Troubleshooting<\/a><a href=\"#selection-steps\">Selection steps<\/a><\/nav>\n\n<h2 id=\"why-304\">Why 304 stainless steel can be difficult to turn<\/h2>\n<p>304 is an austenitic stainless steel and belongs in the <strong>ISO M \u2014 \u4e0d\u9508\u94a2<\/strong> workpiece group. \u5bf9\u6bd4d with many free-machining steels, it can work-harden at the surface, retain more heat near the cutting zone and form long or adhesive chips. A rubbing edge or an interrupted pass through an already hardened skin can make the next cut less stable. The actual behaviour still depends on the bar or casting condition, setup and coolant arrangement.<\/p>\n<p>This is why \u201can insert for stainless steel\u201d is not a complete selection. A finishing pass with a light feed and a stable continuous cut asks for different edge and chip-control behaviour from a heavy interrupted cut.<\/p>\n\n<h2 id=\"stage-and-cut\">First classify the machining stage and cut condition<\/h2>\n<div class=\"ychl-article-table-wrap\"><table><thead><tr><th>Stage<\/th><th>Selection emphasis<\/th><th>What to tell the supplier<\/th><\/tr><\/thead><tbody>\n<tr><td>\u7cbe\u52a0\u5de5<\/td><td>Surface finish and reliable chip formation at the intended feed and depth of cut.<\/td><td>\u5fc5\u586b finish, final allowance and whether chips wrap around the part.<\/td><\/tr>\n<tr><td>\u4e2d\u52a0\u5de5<\/td><td>A balance of edge strength and chip control across the normal operating range.<\/td><td>Typical depth of cut, feed, part diameter and whether the cut varies.<\/td><\/tr>\n<tr><td>\u7c97\u52a0\u5de5<\/td><td>Edge security and chip evacuation under a heavier load.<\/td><td>Stock allowance, engagement, interruptions and machine stability.<\/td><\/tr>\n<\/tbody><\/table><\/div>\n<p>Then classify the engagement: <strong>continuous cutting<\/strong> stays in the material; <strong>light interrupted cutting<\/strong> crosses occasional slots, holes or uneven surfaces; <strong>interrupted cutting<\/strong> repeatedly enters and leaves the material. As interruption increases, consider edge toughness and stability before prioritising maximum wear resistance. Do not assume a grade labelled \u201cfor stainless\u201d will suit every interruption level.<\/p>\n\n<h2 id=\"grade-and-chipbreaker\">Choose geometry, grade and chipbreaker in that order<\/h2>\n<h3>Geometry and holder<\/h3>\n<p>Start with the insert family your holder actually accepts, such as <a href=\"\/zh\/turning-inserts\/wnmg\/\">WNMG<\/a> or <a href=\"\/zh\/turning-inserts\/cnmg\/\">CNMG<\/a>. Check clearance around the part, holder approach, available machine power and whether a stronger or more freely cutting edge is needed. A change of family may require a different holder; it is not a simple grade swap.<\/p>\n<h3>\u724c\u53f7<\/h3>\n<p>Within a brand&#8217;s options for ISO M, compare the trade-off among <strong>wear resistance<\/strong>, <strong>edge toughness<\/strong> and <strong>thermal stability<\/strong>. A stable continuous cut may allow a more wear-resistant choice; interruptions, vibration or chipping can call for a tougher edge. \u724c\u53f7 names are manufacturer-specific, so compare the supplier&#8217;s actual application ranges rather than matching grade letters across brands.<\/p>\n<h3>\u69fd\u578b<\/h3>\n<p>Match the chipbreaker to the <em>real<\/em> feed and depth of cut. A finishing geometry must be able to form and break chips at a light cut; a roughing geometry must withstand its greater load and control the heavier chip. A mismatch can leave long chips or damage an edge even when the grade itself is suitable. Confirm the manufacturer&#8217;s application window for the exact SKU.<\/p>\n\n<h2 id=\"troubleshooting\">Common symptoms and what to check<\/h2>\n<div class=\"ychl-article-table-wrap\"><table><thead><tr><th>Symptom<\/th><th>Checks before changing the SKU<\/th><\/tr><\/thead><tbody>\n<tr><td>Built-up edge<\/td><td>Look for material adhering to the cutting edge. Check edge geometry, rubbing, cutting condition and coolant delivery; do not infer the cause from the workpiece grade alone.<\/td><\/tr>\n<tr><td>Poor chip control<\/td><td>\u5bf9\u6bd4 actual feed and depth with the chipbreaker&#8217;s intended range. Check whether chips are continuous, tangled or striking the part.<\/td><\/tr>\n<tr><td>Chipping<\/td><td>Check interruptions, vibration, clamping, holder condition and edge toughness. A more wear-resistant grade is not automatically the remedy.<\/td><\/tr>\n<tr><td>Short tool life<\/td><td>Identify the wear mode first\u2014flank, notch, crater or edge fracture\u2014then review heat, chip flow and grade suitability.<\/td><\/tr>\n<tr><td>Poor surface finish<\/td><td>Check nose radius, feed, built-up edge, chip contact and system rigidity, including the holder and workholding.<\/td><\/tr>\n<\/tbody><\/table><\/div>\n\n<h2 id=\"selection-steps\">A practical selection sequence<\/h2>\n<ol><li><strong>\u52a0\u5de5\u6750\u6599:<\/strong> identify the workpiece as 304 stainless steel and select ISO M.<\/li><li><strong>Machining stage:<\/strong> define finishing, medium or roughing.<\/li><li><strong>Cut condition:<\/strong> record continuous, lightly interrupted or interrupted engagement.<\/li><li><strong>Geometry:<\/strong> confirm the insert shape, size, radius and holder compatibility.<\/li><li><strong>\u724c\u53f7:<\/strong> compare real ISO M application data for wear resistance, toughness and thermal behaviour.<\/li><li><strong>\u69fd\u578b:<\/strong> choose a geometry that covers the planned feed and depth of cut.<\/li><li><strong>Test and review:<\/strong> observe chip shape, edge condition and surface finish; change one selection variable at a time where practical.<\/li><\/ol>\n<p>For an enquiry, send the current full model, machine and holder, workpiece form, machining stage, interruptions, coolant use and the problem you want to solve. If the exact grade or chipbreaker is unknown, the <a href=\"\/zh\/turning-inserts\/?material=m\">stainless-steel turning insert list<\/a> and <a href=\"\/zh\/help-me-choose\/\">\u5e2e\u52a9\u9009\u578b<\/a> are starting points.<\/p>\n<div class=\"ychl-article-sources\"><h2>Technical references<\/h2><p><a href=\"https:\/\/www.outokumpu.com\/en\/expertise\/2021\/machining-guide\" target=\"_blank\" rel=\"noopener noreferrer\">Outokumpu machining guide for stainless steel<\/a>; <a href=\"https:\/\/www.iso.org\/standard\/69202.html\" target=\"_blank\" rel=\"noopener noreferrer\">ISO 1832 insert designation<\/a>. The guidance above is a selection method, not a fixed speed, feed, tool-life or stock claim.<\/p><\/div>\n<\/article>\n\n<h2>Related guides<\/h2>\n<ul>\n<li><a href=\"\/zh\/resources\/stainless-steel-turning-inserts\/\">\u8f66\u524a\u5200\u7247 for stainless steel (ISO M)<\/a><\/li>\n<li><a href=\"\/zh\/resources\/iso-513-material-groups\/\">ISO 513 material groups explained<\/a><\/li>\n<li><a href=\"\/zh\/resources\/carbide-grades-explained\/\">Carbide grades explained<\/a><\/li>\n<li><a href=\"\/zh\/resources\/cutting-parameters-calculator\/\">Cutting speed \/ feed calculator<\/a><\/li>\n<li><a href=\"\/zh\/turning-inserts\/cnmg\/cnmg-120408\/\">CNMG 120408 turning \u5200\u7247<\/a><\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>Home \/ Resources \/ Articles How to Choose Turning Inserts for 304 Stainless Steel A practical selection sequence for 304 stainless steel: material, machining stage, cut condition, geometry, grade and chipbreaker\u2014without invented cutting data. For 304 stainless steel, start with the workpiece and the cut\u2014not a brand&#8217;s grade name. Establish the machining stage and whether [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":2234,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":"","_ychl_meta_desc":"How to choose turning inserts for 304 stainless steel: recommended geometries, grades and chipbreakers, plus starting cutting data (vc, ap, feed).","_ychl_model_html":""},"class_list":["post-2236","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/ychltools.com\/zh\/wp-json\/wp\/v2\/pages\/2236","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=2236"}],"version-history":[{"count":4,"href":"https:\/\/ychltools.com\/zh\/wp-json\/wp\/v2\/pages\/2236\/revisions"}],"predecessor-version":[{"id":10743,"href":"https:\/\/ychltools.com\/zh\/wp-json\/wp\/v2\/pages\/2236\/revisions\/10743"}],"up":[{"embeddable":true,"href":"https:\/\/ychltools.com\/zh\/wp-json\/wp\/v2\/pages\/2234"}],"wp:attachment":[{"href":"https:\/\/ychltools.com\/zh\/wp-json\/wp\/v2\/media?parent=2236"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}