{"id":13793,"date":"2026-07-04T02:46:29","date_gmt":"2026-07-04T02:46:29","guid":{"rendered":"https:\/\/qilusteelgroup.com\/?p=13793"},"modified":"2026-07-06T01:05:05","modified_gmt":"2026-07-06T01:05:05","slug":"p20-steel-machining","status":"publish","type":"post","link":"https:\/\/qilusteelgroup.com\/es\/p20-steel-machining\/","title":{"rendered":"P20 Steel Machining: Why Your Tools Wear Too Fast\u2014and How to Fix It"},"content":{"rendered":"<p>Most issues in P20 Steel Machining don\u2019t come from the material itself. They come from how it is treated on the shop floor\u2014tool choice, cutting strategy, and sequence planning.<\/p>\n\n\n\n<p>In many mold workshops, P20 Steel Machining is assumed to be \u201ceasy,\u201d but real production tells a different story: uneven surface finish, unexpected tool wear, and dimensional drift after roughing.<\/p>\n\n\n\n<p>The goal here is not to explain what P20 is. If you need the material background, you can refer to this technical overview of <a href=\"https:\/\/qilusteelgroup.com\/es\/p20-steel\/\">P20 steel properties and applications<\/a>.<\/p>\n\n\n\n<div class=\"wp-block-rank-math-toc-block\" id=\"rank-math-toc\"><h2>Table of Contents<\/h2><nav><ul><li><a href=\"#why-p20-behaves-differently-during-machining-and-why-shops-underestimate-it\">Why P20 behaves differently during machining (and why shops underestimate it)<\/a><\/li><li><a href=\"#tool-selection-decides-more-than-cutting-speed\">Tool selection decides more than cutting speed<\/a><\/li><li><a href=\"#why-surface-finish-problems-are-usually-not-finish-problems\">Why surface finish problems are usually not \u201cfinish problems\u201d<\/a><\/li><li><a href=\"#cutting-strategy-matters-more-than-cutting-parameters\">Cutting strategy matters more than cutting parameters<\/a><\/li><li><a href=\"#where-machining-problems-actually-start\">Where machining problems actually start<\/a><\/li><li><a href=\"#why-chatter-happens-even-when-feeds-and-speeds-look-correct\">Why chatter happens even when feeds and speeds look correct<\/a><\/li><li><a href=\"#drilling-and-tapping-p20-where-most-tool-failures-actually-happen\">Drilling and tapping P20: where most tool failures actually happen<\/a><\/li><li><a href=\"#tool-wear-in-p20-is-predictable-if-you-read-the-signs-early\">Tool wear in P20 is predictable if you read the signs early<\/a><\/li><li><a href=\"#common-mistakes-in-real-workshops\">Common mistakes in real workshops<\/a><\/li><li><a href=\"#machining-strategy-checklist-what-experienced-shops-actually-do\">Machining strategy checklist (what experienced shops actually do)<\/a><\/li><li><a href=\"#final-takeaway\">Final takeaway<\/a><\/li><li><a href=\"#faq\">PREGUNTAS FRECUENTES<\/a><ul><\/ul><\/li><\/ul><\/nav><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"why-p20-behaves-differently-during-machining-and-why-shops-underestimate-it\">Why P20 behaves differently during machining (and why shops underestimate it)<\/h2>\n\n\n\n<p>One reason P20 Steel Machining is widely misunderstood is its pre-hardened condition. It is usually supplied around 28\u201332 HRC, which gives a false impression of \u201ceasy cutting.\u201d<\/p>\n\n\n\n<p><a href=\"https:\/\/ocw.mit.edu\/courses\/2-008-design-and-manufacturing-ii-spring-2025\/\" target=\"_blank\" rel=\"noopener\">But machining behavior is not defined only by hardness. According to the machining fundamentals discussed by the MIT Manufacturing Processes Lab, tool wear is strongly affected by heat concentration and chip adhesion behavior in medium-carbon alloy steels<\/a><\/p>\n\n\n\n<p>This is where P20 Steel Machining starts to behave differently from mild steels.<\/p>\n\n\n\n<p>In practical workshops, P20 Steel Machining often shows:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Built-up edge at moderate speeds<\/li>\n\n\n\n<li>Rapid flank wear in finishing passes<\/li>\n\n\n\n<li>Chip welding on carbide tools<\/li>\n<\/ul>\n\n\n\n<p>These are not material defects. They are process mismatches.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"559\" src=\"https:\/\/qilusteelgroup.com\/wp-content\/uploads\/2026\/06\/cnc-milling-p20-mold-steel-thermal-analysis-1.jpg\" alt=\"\" class=\"wp-image-13802\" srcset=\"https:\/\/qilusteelgroup.com\/wp-content\/uploads\/2026\/06\/cnc-milling-p20-mold-steel-thermal-analysis-1.jpg 1024w, https:\/\/qilusteelgroup.com\/wp-content\/uploads\/2026\/06\/cnc-milling-p20-mold-steel-thermal-analysis-1-300x164.jpg 300w, https:\/\/qilusteelgroup.com\/wp-content\/uploads\/2026\/06\/cnc-milling-p20-mold-steel-thermal-analysis-1-768x419.jpg 768w, https:\/\/qilusteelgroup.com\/wp-content\/uploads\/2026\/06\/cnc-milling-p20-mold-steel-thermal-analysis-1-18x10.jpg 18w, https:\/\/qilusteelgroup.com\/wp-content\/uploads\/2026\/06\/cnc-milling-p20-mold-steel-thermal-analysis-1-500x273.jpg 500w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"tool-selection-decides-more-than-cutting-speed\">Tool selection decides more than cutting speed<\/h2>\n\n\n\n<p>In real P20 Steel Machining, the first failure point is not feed rate\u2014it is tool geometry.<\/p>\n\n\n\n<p><a href=\"https:\/\/www.sandvik.coromant.com\/en-gb\/knowledge\/materials\" target=\"_blank\" rel=\"noopener\">Based on machining guidance from Sandvik Coromant\u2019s technical library<\/a><\/p>\n\n\n\n<div class=\"wp-block-media-text is-stacked-on-mobile\"><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" decoding=\"async\" width=\"606\" height=\"1024\" src=\"http:\/\/qilusteelgroup.com\/wp-content\/uploads\/2026\/06\/p20-steel-machining-tool-selection-guide-606x1024.png\" alt=\"P20 steel machining tool selection infographic showing four key factors affecting tool wear: edge preparation, coating type, flute geometry, and overhang rigidity, with a three-step correction strategy using fine-grain carbide, TiAlN or AlCrN coatings, and reduced tool overhang\" class=\"wp-image-13798 size-full\" srcset=\"https:\/\/qilusteelgroup.com\/wp-content\/uploads\/2026\/06\/p20-steel-machining-tool-selection-guide-606x1024.png 606w, https:\/\/qilusteelgroup.com\/wp-content\/uploads\/2026\/06\/p20-steel-machining-tool-selection-guide-178x300.png 178w, https:\/\/qilusteelgroup.com\/wp-content\/uploads\/2026\/06\/p20-steel-machining-tool-selection-guide-7x12.png 7w, https:\/\/qilusteelgroup.com\/wp-content\/uploads\/2026\/06\/p20-steel-machining-tool-selection-guide-500x844.png 500w, https:\/\/qilusteelgroup.com\/wp-content\/uploads\/2026\/06\/p20-steel-machining-tool-selection-guide.png 720w\" sizes=\"auto, (max-width: 606px) 100vw, 606px\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<p>Tool wear is heavily influenced by:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>edge preparation<\/li>\n\n\n\n<li>coating type<\/li>\n\n\n\n<li>flute geometry<\/li>\n\n\n\n<li>tool overhang rigidity<\/li>\n<\/ul>\n\n\n\n<p>For P20 Steel Machining, many shops still use general-purpose carbide tools designed for mild steel. That leads to unstable cutting conditions even before parameters are adjusted.<\/p>\n\n\n\n<p>A common correction strategy in P20 Steel Machining is:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>switch to fine-grain carbide<\/li>\n\n\n\n<li>use TiAlN or AlCrN coatings<\/li>\n\n\n\n<li>reduce tool overhang below 3\u00d7 diameter<\/li>\n<\/ul>\n\n\n\n<p>This alone often improves tool life more than any spindle speed adjustment.<\/p>\n<\/div><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"why-surface-finish-problems-are-usually-not-finish-problems\">Why surface finish problems are usually not \u201cfinish problems\u201d<\/h2>\n\n\n\n<p>One of the most misunderstood issues in P20 Steel Machining is poor surface quality after finishing passes.<\/p>\n\n\n\n<p>Operators often adjust feed rate or RPM. But in most cases, the real cause is vibration and tool deflection.<\/p>\n\n\n\n<p><a href=\"https:\/\/www.sciencedirect.com\/journal\/journal-of-manufacturing-processes\" target=\"_blank\" rel=\"noopener\">Research published in the Journal of Manufacturing Processes explains that surface roughness in pre-hardened steels is strongly correlated with dynamic cutting stability rather than cutting speed alone<\/a><\/p>\n\n\n\n<p>In P20 Steel Machining, typical root causes include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>excessive radial engagement<\/li>\n\n\n\n<li>long tool overhang<\/li>\n\n\n\n<li>unstable fixture clamping<\/li>\n\n\n\n<li>incorrect step-over strategy<\/li>\n<\/ul>\n\n\n\n<p>In practice, reducing engagement width often improves surface finish more than reducing feed rate.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"559\" src=\"http:\/\/qilusteelgroup.com\/wp-content\/uploads\/2026\/06\/p20-steel-machining-surface-finish-chatter-stability-explained.jpg\" alt=\"A technical comparison diagram explaining why P20 tool steel surface finish problems are caused by dynamic chatter vibration and tool deflection, not just feed rate or RPM. It contrasts the ineffective approach of adjusting speeds with the effective solution of reducing radial engagement width (Ae) to improve cutting stability and finish quality.\" class=\"wp-image-13800\" srcset=\"https:\/\/qilusteelgroup.com\/wp-content\/uploads\/2026\/06\/p20-steel-machining-surface-finish-chatter-stability-explained.jpg 1024w, https:\/\/qilusteelgroup.com\/wp-content\/uploads\/2026\/06\/p20-steel-machining-surface-finish-chatter-stability-explained-300x164.jpg 300w, https:\/\/qilusteelgroup.com\/wp-content\/uploads\/2026\/06\/p20-steel-machining-surface-finish-chatter-stability-explained-768x419.jpg 768w, https:\/\/qilusteelgroup.com\/wp-content\/uploads\/2026\/06\/p20-steel-machining-surface-finish-chatter-stability-explained-18x10.jpg 18w, https:\/\/qilusteelgroup.com\/wp-content\/uploads\/2026\/06\/p20-steel-machining-surface-finish-chatter-stability-explained-500x273.jpg 500w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"cutting-strategy-matters-more-than-cutting-parameters\">Cutting strategy matters more than cutting parameters<\/h2>\n\n\n\n<p>In most production environments, P20 Steel Machining is done in three stages:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>roughing<\/li>\n\n\n\n<li>semi-finishing<\/li>\n\n\n\n<li>finishing<\/li>\n<\/ul>\n\n\n\n<p>But many shops skip proper semi-finishing, which leads to stress release issues later.<\/p>\n\n\n\n<p>According to the ASM International Handbook of Machining, residual stress redistribution after roughing can directly affect dimensional stability in tool steels<\/p>\n\n\n\n<p>This is especially important in P20 Steel Machining, where pre-hardened structure still contains internal stress from forging and rolling.<\/p>\n\n\n\n<p>A stable workflow usually includes:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>controlled roughing with allowance<\/li>\n\n\n\n<li>stress relief before finishing<\/li>\n\n\n\n<li>light finishing pass with stable tool engagement<\/li>\n<\/ul>\n\n\n\n<p>Without this, P20 Steel Machining often shows size drift after unclamping.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"where-machining-problems-actually-start\">Where machining problems actually start<\/h2>\n\n\n\n<p>Most failure analysis in P20 Steel Machining reveals a pattern:<\/p>\n\n\n\n<p>It is not spindle speed<\/p>\n\n\n\n<p>It is not feed rate<\/p>\n\n\n\n<p>It is not coolant<\/p>\n\n\n\n<p>It is sequence and rigidity.<\/p>\n\n\n\n<p>When shops fix these two factors, P20 Steel Machining becomes predictable even without changing machine parameters.<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"P20 NI Mold Tool Steel Plate High Polishing Pre Hardened Wear Resistant\" width=\"1290\" height=\"726\" src=\"https:\/\/www.youtube.com\/embed\/5ndm-4nvIpE?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<p>For material behavior, hardness range, and heat treatment response, refer to the full overview of <strong><a href=\"https:\/\/qilusteelgroup.com\/es\/p20-steel\/\">P20 steel<\/a><\/strong> here.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"why-chatter-happens-even-when-feeds-and-speeds-look-correct\">Why chatter happens even when feeds and speeds look correct<\/h2>\n\n\n\n<p>In real workshop conditions, P20 Steel Machining chatter is rarely caused by incorrect RPM.<\/p>\n\n\n\n<p>Most vibration issues come from structural instability in the cutting system.<\/p>\n\n\n\n<p>Based on machining stability research from the <strong><a href=\"https:\/\/me.engin.umich.edu\/research\/\" target=\"_blank\" rel=\"noopener\">University of Michigan \u2013 Manufacturing Engineering Lab<\/a><\/strong>, chatter is strongly linked to tool-holder rigidity and dynamic stiffness rather than cutting parameters alone:<\/p>\n\n\n\n<p>In P20 Steel Machining, chatter usually appears in three situations:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>pocket milling with long tools<\/li>\n\n\n\n<li>side wall finishing with high radial engagement<\/li>\n\n\n\n<li>thin wall mold structures without support<\/li>\n<\/ul>\n\n\n\n<p>What matters most is not reducing speed, but controlling cutting load direction.<\/p>\n\n\n\n<p>A stable approach in P20 Steel Machining is:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>reduce radial engagement first (not feed)<\/li>\n\n\n\n<li>shorten tool overhang<\/li>\n\n\n\n<li>increase axial depth while reducing radial width<\/li>\n<\/ul>\n\n\n\n<p>This shift alone often eliminates vibration without touching spindle settings.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"559\" src=\"http:\/\/qilusteelgroup.com\/wp-content\/uploads\/2026\/06\/p20-steel-machining-chatter-stability-analysis.jpg\" alt=\"Technical diagram explaining why P20 steel CNC machining experiences chatter despite correct feeds and speeds. It illustrates how tool overhang, radial engagement, and structural stiffness, rather than spindle RPM, dictate stability during milling.\" class=\"wp-image-13803\" srcset=\"https:\/\/qilusteelgroup.com\/wp-content\/uploads\/2026\/06\/p20-steel-machining-chatter-stability-analysis.jpg 1024w, https:\/\/qilusteelgroup.com\/wp-content\/uploads\/2026\/06\/p20-steel-machining-chatter-stability-analysis-300x164.jpg 300w, https:\/\/qilusteelgroup.com\/wp-content\/uploads\/2026\/06\/p20-steel-machining-chatter-stability-analysis-768x419.jpg 768w, https:\/\/qilusteelgroup.com\/wp-content\/uploads\/2026\/06\/p20-steel-machining-chatter-stability-analysis-18x10.jpg 18w, https:\/\/qilusteelgroup.com\/wp-content\/uploads\/2026\/06\/p20-steel-machining-chatter-stability-analysis-500x273.jpg 500w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"drilling-and-tapping-p20-where-most-tool-failures-actually-happen\">Drilling and tapping P20: where most tool failures actually happen<\/h2>\n\n\n\n<p>Drilling is often ignored in P20 Steel Machining, but it is one of the highest failure points in production.<\/p>\n\n\n\n<p>The reason is chip evacuation pressure inside pre-hardened steel.<\/p>\n\n\n\n<p>Heat concentration and chip packing are the main causes of drill breakage.<\/p>\n\n\n\n<p><strong>In P20 Steel Machining, drilling problems usually come from:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>using standard HSS drills instead of carbide<\/li>\n\n\n\n<li>no peck cycle strategy<\/li>\n\n\n\n<li>insufficient coolant pressure<\/li>\n<\/ul>\n\n\n\n<p><strong>For tapping:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>use rigid tapping only<\/li>\n\n\n\n<li>avoid dry tapping in deep holes<\/li>\n\n\n\n<li>reduce entry speed in blind holes<\/li>\n<\/ul>\n\n\n\n<p>Once corrected, P20 Steel Machining becomes significantly more stable in hole-making operations.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"tool-wear-in-p20-is-predictable-if-you-read-the-signs-early\">Tool wear in P20 is predictable if you read the signs early<\/h2>\n\n\n\n<p>In advanced P20 Steel Machining, tool wear is not random.<\/p>\n\n\n\n<p>It follows a pattern:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>initial edge rounding<\/li>\n\n\n\n<li>micro chipping<\/li>\n\n\n\n<li>flank wear expansion<\/li>\n\n\n\n<li>sudden failure if ignored<\/li>\n<\/ul>\n\n\n\n<p>Most failures in P20 Steel Machining come from ignoring early-stage wear signals.<\/p>\n\n\n\n<p><strong>Key indicators:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>slight change in chip color<\/li>\n\n\n\n<li>increasing spindle load<\/li>\n\n\n\n<li>loss of surface gloss<\/li>\n<\/ul>\n\n\n\n<p>Once these appear, tool change timing becomes critical.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"common-mistakes-in-real-workshops\">Common mistakes in real workshops<\/h2>\n\n\n\n<p>In daily P20 Steel Machining, these mistakes appear repeatedly:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>treating P20 like mild steel<\/li>\n\n\n\n<li>ignoring fixture rigidity<\/li>\n\n\n\n<li>skipping semi-finishing pass<\/li>\n\n\n\n<li>over-relying on coolant instead of strategy<\/li>\n\n\n\n<li>using one tool for roughing and finishing<\/li>\n<\/ul>\n\n\n\n<p>None of these are parameter issues.<\/p>\n\n\n\n<p>They are process discipline issues in P20 Steel Machining.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"machining-strategy-checklist-what-experienced-shops-actually-do\">Machining strategy checklist (what experienced shops actually do)<\/h2>\n\n\n\n<p>A stable workflow in P20 Steel Machining usually looks like this:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>roughing with controlled stock allowance<\/li>\n\n\n\n<li>stress stabilization pause<\/li>\n\n\n\n<li>semi-finishing pass<\/li>\n\n\n\n<li>finishing with reduced radial engagement<\/li>\n\n\n\n<li>final inspection before polishing<\/li>\n<\/ul>\n\n\n\n<p>This sequence reduces dimensional drift and improves consistency across batches.<\/p>\n\n\n\n<p>It also explains why experienced mold shops rarely struggle with P20 Steel Machining, even on older CNC machines.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"final-takeaway\">Final takeaway<\/h2>\n\n\n\n<p>In practice, P20 Steel Machining is not a material challenge\u2014it is a process control challenge.<\/p>\n\n\n\n<p>Once rigidity, tool selection, and machining sequence are controlled, performance becomes predictable even across different machines and operators.<\/p>\n\n\n\n<p>That is why experienced mold shops rarely \u201cfight the material\u201d during P20 Steel Machining\u2014they control the system around it.<\/p>\n\n\n\n<p>And when that system is stable, P20 Steel Machining stops being a problem and becomes a repeatable production process.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"faq\">PREGUNTAS FRECUENTES<\/h2>\n\n\n<div id=\"rank-math-faq\" class=\"rank-math-block\">\n<div class=\"rank-math-list\">\n<div id=\"faq-question-1782526503938\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question\">Is P20 steel difficult to machine?<\/h3>\n<div class=\"rank-math-answer\">\n\n<p>No. P20 Steel Machining is considered medium-easy, but tool selection and rigidity still matter more than cutting speed.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-question-1782526520616\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question\">What is the best tool for P20 machining?<\/h3>\n<div class=\"rank-math-answer\">\n\n<p>Fine-grain carbide with TiAlN or AlCrN coating performs best in P20 Steel Machining.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-question-1782526534695\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question\">Why does surface finish degrade in finishing passes?<\/h3>\n<div class=\"rank-math-answer\">\n\n<p>Because of tool deflection and vibration, not material hardness in P20 Steel Machining.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-question-1782526550111\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question\">Can P20 be machined after heat treatment?<\/h3>\n<div class=\"rank-math-answer\">\n\n<p>Yes. P20 Steel Machining is typically done in pre-hardened condition, but minor finishing adjustments are possible after heat exposure.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-question-1782526562657\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question\">Why does tool life drop suddenly?<\/h3>\n<div class=\"rank-math-answer\">\n\n<p>Usually due to built-up edge and heat concentration in P20 Steel Machining, not gradual wear.<\/p>\n\n<\/div>\n<\/div>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Most issues in P20 Steel Machining don\u2019t come from the material itself. They come from how it is treated on the shop floor\u2014tool choice, cutting strategy, and sequence planning. In many mold workshops, P20 Steel Machining is assumed to be \u201ceasy,\u201d but real production tells a different story: uneven surface finish, unexpected tool wear, and [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":13805,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_gspb_post_css":"","footnotes":""},"categories":[42,37],"tags":[212,209,210,214,213,215,208,121,207,217,211,169,176],"class_list":["post-13793","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","category-tool-steel","tag-chatter-vibration","tag-cnc-machining-steel","tag-cnc-milling","tag-injection-mold-steel","tag-machining-problems","tag-metal-cutting","tag-mold-steel-machining","tag-p20-steel","tag-p20-steel-machining","tag-steel-machining-guide","tag-surface-finish","tag-tool-steel-machining","tag-tool-wear"],"blocksy_meta":[],"_links":{"self":[{"href":"https:\/\/qilusteelgroup.com\/es\/wp-json\/wp\/v2\/posts\/13793","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/qilusteelgroup.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/qilusteelgroup.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/qilusteelgroup.com\/es\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/qilusteelgroup.com\/es\/wp-json\/wp\/v2\/comments?post=13793"}],"version-history":[{"count":6,"href":"https:\/\/qilusteelgroup.com\/es\/wp-json\/wp\/v2\/posts\/13793\/revisions"}],"predecessor-version":[{"id":13840,"href":"https:\/\/qilusteelgroup.com\/es\/wp-json\/wp\/v2\/posts\/13793\/revisions\/13840"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/qilusteelgroup.com\/es\/wp-json\/wp\/v2\/media\/13805"}],"wp:attachment":[{"href":"https:\/\/qilusteelgroup.com\/es\/wp-json\/wp\/v2\/media?parent=13793"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/qilusteelgroup.com\/es\/wp-json\/wp\/v2\/categories?post=13793"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/qilusteelgroup.com\/es\/wp-json\/wp\/v2\/tags?post=13793"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}