{"product_id":"wnmg080404n-su-ac820p-sumitomo-10pcs","title":"SUMITOMO WNMG080404N-SU AC820P Carbide Insert WNMG431-SU Steel Turning","description":"\u003cstyle\u003e\n  .sumi-container {\n    font-family: -apple-system, BlinkMacSystemFont, \"Segoe UI\", Roboto, Helvetica, Arial, sans-serif;\n    color: #2c2c2c;\n    line-height: 1.6;\n    max-width: 1200px;\n    margin: 0 auto;\n    padding: 10px;\n  }\n\n  .sumi-header {\n    background-color: #47479F;\n    color: #ffffff;\n    padding: 20px 25px;\n    border-radius: 8px;\n    margin-bottom: 25px;\n  }\n\n  .sumi-header h1 {\n    margin: 0;\n    font-size: 1.8rem;\n    font-weight: 700;\n    color: #ffffff;\n  }\n\n  .sumi-header p {\n    margin: 5px 0 0 0;\n    font-size: 0.95rem;\n    opacity: 0.9;\n  }\n\n  .sumi-card {\n    border: 1px solid #e0e0e0;\n    border-radius: 8px;\n    padding: 20px;\n    margin-bottom: 25px;\n    background-color: #ffffff;\n    box-shadow: 0 2px 5px rgba(0,0,0,0.03);\n  }\n\n  .sumi-title-h2 {\n    color: #47479F;\n    font-size: 1.35rem;\n    border-bottom: 2px solid #47479F;\n    padding-bottom: 8px;\n    margin-top: 0;\n    margin-bottom: 15px;\n  }\n\n  .sumi-iso-grid {\n    display: grid;\n    grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));\n    gap: 8px;\n    margin: 15px 0;\n  }\n\n  .sumi-iso-box {\n    border: 1px solid #47479F;\n    border-radius: 6px;\n    padding: 8px;\n    text-align: center;\n    background-color: #f8f8fc;\n  }\n\n  .sumi-iso-box .letter {\n    font-weight: 800;\n    font-size: 1.2rem;\n    color: #47479F;\n  }\n\n  .sumi-iso-box .meaning {\n    font-size: 0.75rem;\n    color: #555;\n    margin-top: 4px;\n  }\n\n  .sumi-table-container {\n    overflow-x: auto;\n    margin: 15px 0;\n  }\n\n  .sumi-table {\n    width: 100%;\n    border-collapse: collapse;\n    font-size: 0.9rem;\n    text-align: left;\n  }\n\n  .sumi-table th {\n    background-color: #47479F;\n    color: #ffffff;\n    padding: 10px;\n    font-weight: 600;\n  }\n\n  .sumi-table td {\n    padding: 10px;\n    border-bottom: 1px solid #eeeeee;\n  }\n\n  .sumi-table tr:nth-child(even) {\n    background-color: #f9f9f9;\n  }\n\n  .sumi-holder-box {\n    background-color: #f4f4fa;\n    border-left: 4px solid #47479F;\n    padding: 15px;\n    margin: 15px 0;\n    border-radius: 0 6px 6px 0;\n  }\n\n  .sumi-review-grid {\n    display: grid;\n    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));\n    gap: 15px;\n  }\n\n  .sumi-review-card {\n    border: 1px solid #e2e2e2;\n    border-radius: 6px;\n    padding: 15px;\n    background: #fafafa;\n  }\n\n  .sumi-stars {\n    color: #ffb400;\n    font-size: 1rem;\n    margin-bottom: 5px;\n  }\n\n  .sumi-reviewer {\n    font-size: 0.8rem;\n    color: #777;\n    margin-top: 8px;\n  }\n\n  .sumi-faq-item {\n    margin-bottom: 15px;\n    border-bottom: 1px solid #eee;\n    padding-bottom: 10px;\n  }\n\n  .sumi-faq-q {\n    font-weight: 700;\n    color: #47479F;\n    margin-bottom: 5px;\n  }\n\n  .sumi-dark-banner {\n    background-color: #2b2b54;\n    color: #ffffff;\n    padding: 20px;\n    border-radius: 8px;\n    margin-top: 25px;\n  }\n\n  .sumi-dark-banner h3 {\n    color: #ffffff;\n    margin-top: 0;\n  }\n\n  .sumi-badge {\n    display: inline-block;\n    background: #47479F;\n    color: #fff;\n    padding: 3px 8px;\n    border-radius: 4px;\n    font-size: 0.8rem;\n    font-weight: 600;\n  }\n\u003c\/style\u003e\n\u003cdiv class=\"sumi-container\"\u003e\n\u003c!-- H1 HEADER --\u003e\n\u003cdiv class=\"sumi-header\"\u003e\n\u003ch1\u003eSUMITOMO WNMG080404N-SU AC820P Carbide Turning Insert\u003c\/h1\u003e\n\u003cp\u003eISO: WNMG080404N-SU | ANSI: WNMG431-SU | Grade: AC820P First Choice General Steel Turning\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- SECTION 1: PRODUCT OVERVIEW --\u003e\n\u003cdiv class=\"sumi-card\"\u003e\n\u003ch2 class=\"sumi-title-h2\"\u003e1. Product Overview\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWhich carbide insert is the ultimate first choice for high-efficiency general steel turning on CNC lathes?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eSUMITOMO WNMG080404N-SU AC820P\u003c\/strong\u003e is Sumitomo Electric's premier flagship insert designed for versatile, high-productivity steel machining across carbon steels, alloy steels, and die steels. Engineered with Sumitomo’s proprietary \u003cstrong\u003eAbsotech Platinum CVD coating technology\u003c\/strong\u003e, this insert features an ultrafine $TiCN + Al_2O_3$ layer that radically reduces tensile stress while increasing flank wear resistance and thermal barrier performance.\u003c\/p\u003e\n\u003cp\u003eFeaturing the universal \u003cstrong\u003eSU Chipbreaker\u003c\/strong\u003e geometry with a medium-duty 3D rake groove, it guarantees smooth chip evacuation across a wide spectrum of depths of cut ($ap$) and feed rates ($fn$), preventing chip tangling and workpiece marring in both continuous and light-interrupted cutting setups.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- SECTION 2: KEY FEATURES --\u003e\n\u003cdiv class=\"sumi-card\"\u003e\n\u003ch2 class=\"sumi-title-h2\"\u003e2. Key Technical Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAC820P Absotech Technology:\u003c\/strong\u003e Industry-leading CVD coated grade for ISO P15–P30 applications, offering up to 2x tool life compared to conventional steel turning inserts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSU Universal Chipbreaker:\u003c\/strong\u003e Optimizes chip control from medium roughing down to fine finishing passes, eliminating long stringy chips.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDouble-Sided 80° Trigon Design:\u003c\/strong\u003e Provides 6 usable cutting edges per insert, cutting tooling costs per corner by 33% versus standard 4-edge CNMG designs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow Cutting Resistance:\u003c\/strong\u003e Sharp yet reinforced honed cutting edge minimizes machine spindle load and suppresses high-frequency chatter.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c!-- SECTION 3: SPECIFICATIONS \u0026 ISO CODE DECODER --\u003e\n\u003cdiv class=\"sumi-card\"\u003e\n\u003ch2 class=\"sumi-title-h2\"\u003e3. Specifications \u0026amp; ISO\/ANSI Breakdown\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eISO vs. ANSI Designation Comparison:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv class=\"sumi-table-container\"\u003e\n\u003ctable class=\"sumi-table\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eStandard\u003c\/th\u003e\n\u003cth\u003eDesignation Code\u003c\/th\u003e\n\u003cth\u003eInsert Shape\u003c\/th\u003e\n\u003cth\u003eInscribed Circle (IC)\u003c\/th\u003e\n\u003cth\u003eThickness\u003c\/th\u003e\n\u003cth\u003eNose Radius\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eISO (Metric)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWNMG080404N-SU\u003c\/td\u003e\n\u003ctd\u003eTrigon 80° (W)\u003c\/td\u003e\n\u003ctd\u003e12.70 mm\u003c\/td\u003e\n\u003ctd\u003e4.76 mm\u003c\/td\u003e\n\u003ctd\u003e0.4 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eANSI (Inch)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWNMG431-SU\u003c\/td\u003e\n\u003ctd\u003eTrigon 80° (W)\u003c\/td\u003e\n\u003ctd\u003e1\/2\"\u003c\/td\u003e\n\u003ctd\u003e3\/16\"\u003c\/td\u003e\n\u003ctd\u003e1\/64\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp style=\"margin-top: 20px;\"\u003e\u003cstrong\u003eISO Metric Code Decoder (Box Breakdown):\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv class=\"sumi-iso-grid\"\u003e\n\u003cdiv class=\"sumi-iso-box\"\u003e\n\u003cdiv class=\"letter\"\u003eW\u003c\/div\u003e\n\u003cdiv class=\"meaning\"\u003e80° Trigon Shape\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sumi-iso-box\"\u003e\n\u003cdiv class=\"letter\"\u003eN\u003c\/div\u003e\n\u003cdiv class=\"meaning\"\u003e0° Negative Clearance\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sumi-iso-box\"\u003e\n\u003cdiv class=\"letter\"\u003eM\u003c\/div\u003e\n\u003cdiv class=\"meaning\"\u003eMedium Tolerance\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sumi-iso-box\"\u003e\n\u003cdiv class=\"letter\"\u003eG\u003c\/div\u003e\n\u003cdiv class=\"meaning\"\u003eDouble-Sided Pin Lock\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sumi-iso-box\"\u003e\n\u003cdiv class=\"letter\"\u003e08\u003c\/div\u003e\n\u003cdiv class=\"meaning\"\u003eIC 12.70mm (1\/2\")\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sumi-iso-box\"\u003e\n\u003cdiv class=\"letter\"\u003e04\u003c\/div\u003e\n\u003cdiv class=\"meaning\"\u003eThickness 4.76mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sumi-iso-box\"\u003e\n\u003cdiv class=\"letter\"\u003e04\u003c\/div\u003e\n\u003cdiv class=\"meaning\"\u003eRadius 0.4mm (1\/64\")\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sumi-iso-box\"\u003e\n\u003cdiv class=\"letter\"\u003eN-SU\u003c\/div\u003e\n\u003cdiv class=\"meaning\"\u003eSU Chipbreaker\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp style=\"margin-top: 20px;\"\u003e\u003cstrong\u003eRecommended Cutting Parameters (P-Group Steel):\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv class=\"sumi-table-container\"\u003e\n\u003ctable class=\"sumi-table\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eMetric Units\u003c\/th\u003e\n\u003cth\u003eImperial Units\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCutting Speed ($Vc$)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e180 - 350 m\/min\u003c\/td\u003e\n\u003ctd\u003e590 - 1150 SFM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFeed Rate ($fn$)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.12 - 0.40 mm\/rev\u003c\/td\u003e\n\u003ctd\u003e0.005 - 0.016 ipr\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDepth of Cut ($ap$)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.5 - 3.5 mm\u003c\/td\u003e\n\u003ctd\u003e0.020 - 0.138 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sumi-holder-box\"\u003e\n\u003cstrong\u003e🔗 Compatible Tool Holders (Tooling System Links):\u003c\/strong\u003e\n\u003cp style=\"margin: 5px 0 0 0; font-size: 0.9rem;\"\u003eThis insert fits all standard ISO external and internal turning holders: \u003ca href=\"https:\/\/cnchome-beyond.com\/collections\/wn-insert-multi-lock-system\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan class=\"sumi-badge\"\u003eMWLNR\/L 2525M08\u003c\/span\u003e \u003cspan class=\"sumi-badge\"\u003eWWLNR\/L 2020K08\u003c\/span\u003e \u003cspan class=\"sumi-badge\"\u003eDWLNR\/L 2525M08\u003c\/span\u003e \u003cspan class=\"sumi-badge\"\u003eS32T-MWLNR08\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- SECTION 4: APPLICATIONS --\u003e\n\u003cdiv class=\"sumi-card\"\u003e\n\u003ch2 class=\"sumi-title-h2\"\u003e4. Product Application Scenarios\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeneral Machinery Turning:\u003c\/strong\u003e Shafts, flanges, gears, and structural steel components.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomotive Parts Manufacturing:\u003c\/strong\u003e High-speed mass production turning of drive shafts, hubs, and wheel bearings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSteel Grade Suitability:\u003c\/strong\u003e Ideal for AISI 1018, 1045, 4140, 4340, 8620, S45C, and SCM440 materials.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c!-- SECTION 5: COMPATIBILITY --\u003e\n\u003cdiv class=\"sumi-card\"\u003e\n\u003ch2 class=\"sumi-title-h2\"\u003e5. Compatibility\u003c\/h2\u003e\n\u003cp\u003e100% compatible with standard ISO turning systems using \u003cstrong\u003eLever Lock (M-Type)\u003c\/strong\u003e, \u003cstrong\u003eWedge Lock (W-Type)\u003c\/strong\u003e, and \u003cstrong\u003eTop-and-Hole Clamp (D-Type)\u003c\/strong\u003e holders across CNC lathes (Haas, Mazak, Doosan, Okuma, Citizen, DMG Mori).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- SECTION 6: GRADE COMPARISON --\u003e\n\u003cdiv class=\"sumi-card\"\u003e\n\u003ch2 class=\"sumi-title-h2\"\u003e6. Sumitomo Grade Comparison\u003c\/h2\u003e\n\u003cdiv class=\"sumi-table-container\"\u003e\n\u003ctable class=\"sumi-table\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eGrade\u003c\/th\u003e\n\u003cth\u003eISO Range\u003c\/th\u003e\n\u003cth\u003ePrimary Application\u003c\/th\u003e\n\u003cth\u003eCutting Performance\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAC810P\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eISO P05 - P20\u003c\/td\u003e\n\u003ctd\u003eHigh-Speed Continuous Turning\u003c\/td\u003e\n\u003ctd\u003eMaximum Wear Resistance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAC820P\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eISO P10 - P30\u003c\/td\u003e\n\u003ctd\u003eGeneral Steel Turning (First Choice)\u003c\/td\u003e\n\u003ctd\u003eBalanced Speed \u0026amp; Toughness\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAC830P\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eISO P20 - P40\u003c\/td\u003e\n\u003ctd\u003eInterrupted Turning \u0026amp; Heavy Duty Roughing\u003c\/td\u003e\n\u003ctd\u003eMaximum Fracture Toughness\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- SECTION 7: WHY CHOOSE US \u0026 REVIEWS --\u003e\n\u003cdiv class=\"sumi-card\"\u003e\n\u003ch2 class=\"sumi-title-h2\"\u003e7. Why Choose Us \u0026amp; Verified Customer Reviews\u003c\/h2\u003e\n\u003cp\u003e100% Genuine Sumitomo Electric Hardmetal tools delivered directly from certified distributors. Guaranteed technical accuracy and original factory performance.\u003c\/p\u003e\n\u003cdiv class=\"sumi-review-grid\"\u003e\n\u003cdiv class=\"sumi-review-card\"\u003e\n\u003cdiv class=\"sumi-stars\"\u003e★★★★★\u003c\/div\u003e\n\u003cstrong\u003e\"Workhorse insert for our Haas ST-20\"\u003c\/strong\u003e\n\u003cp style=\"font-size: 0.85rem; margin: 5px 0;\"\u003eWe run AC820P on 4140 steel all day. Wear is super smooth and predictable. 6 edges per insert save us serious money.\u003c\/p\u003e\n\u003cdiv class=\"sumi-reviewer\"\u003e― Brian M., Machine Shop Owner (United States)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sumi-review-card\"\u003e\n\u003cdiv class=\"sumi-stars\"\u003e★★★★★\u003c\/div\u003e\n\u003cstrong\u003e\"Sehr gute Standzeit bei C45\"\u003c\/strong\u003e\n\u003cp style=\"font-size: 0.85rem; margin: 5px 0;\"\u003eAusgezeichnete Spanbrechung mit dem SU-Brecher. Kein Verwickeln von Spänen mehr.\u003c\/p\u003e\n\u003cdiv class=\"sumi-reviewer\"\u003e― Thomas K., Production Manager (Germany)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sumi-review-card\"\u003e\n\u003cdiv class=\"sumi-stars\"\u003e★★★★★\u003c\/div\u003e\n\u003cstrong\u003e\"Perfect chip control\"\u003c\/strong\u003e\n\u003cp style=\"font-size: 0.85rem; margin: 5px 0;\"\u003eSU breaker handles thin cuts and heavier roughing passes without changing the tool setup. Highly recommended.\u003c\/p\u003e\n\u003cdiv class=\"sumi-reviewer\"\u003e― Marco G., CNC Machinist (Italy)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sumi-review-card\"\u003e\n\u003cdiv class=\"sumi-stars\"\u003e★★★★☆\u003c\/div\u003e\n\u003cstrong\u003e\"安定の住友品質\"\u003c\/strong\u003e\n\u003cp style=\"font-size: 0.85rem; margin: 5px 0;\"\u003eS45Cの加工で長年使用。AC820Pになってから耐摩耗性が格段に上がった。\u003c\/p\u003e\n\u003cdiv class=\"sumi-reviewer\"\u003e― Satoshi Y., Lathe Supervisor (Japan)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sumi-review-card\"\u003e\n\u003cdiv class=\"sumi-stars\"\u003e★★★★★\u003c\/div\u003e\n\u003cstrong\u003e\"Great general-purpose steel insert\"\u003c\/strong\u003e\n\u003cp style=\"font-size: 0.85rem; margin: 5px 0;\"\u003eFast shipping and 100% genuine Sumitomo packaging. Outperforms our old ISO inserts significantly.\u003c\/p\u003e\n\u003cdiv class=\"sumi-reviewer\"\u003e― Carlos M., Industrial Supplies (Spain)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- SECTION 8: AI-POWERED FAQ --\u003e\n\u003cdiv class=\"sumi-card\"\u003e\n\u003ch2 class=\"sumi-title-h2\"\u003e8. AI-Powered Technical FAQ\u003c\/h2\u003e\n\u003cdiv class=\"sumi-faq-item\"\u003e\n\u003cdiv class=\"sumi-faq-q\"\u003eQ: Why is AC820P considered the \"First Choice\" grade for steel turning?\u003c\/div\u003e\n\u003cdiv\u003eA: Sumitomo AC820P strikes the ideal balance between hardness and fracture toughness (ISO P10–P30). Its Absotech CVD coating resists crater wear at high surface speeds while maintaining the toughness needed to handle minor workpiece variations and light interruptions.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sumi-faq-item\"\u003e\n\u003cdiv class=\"sumi-faq-q\"\u003eQ: How does the SU chipbreaker compare to the UX or GU chipbreaker?\u003c\/div\u003e\n\u003cdiv\u003eA: The SU chipbreaker is designed for general-purpose medium cutting regimes (ap 0.5–3.5mm), offering versatile chip control. UX is tailored for lighter finishing pass depths, while GU is oriented toward heavier roughing with larger feeds.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sumi-faq-item\"\u003e\n\u003cdiv class=\"sumi-faq-q\"\u003eQ: What is the main advantage of a WNMG insert over a CNMG insert?\u003c\/div\u003e\n\u003cdiv\u003eA: WNMG inserts feature a trigon shape that provides **6 cutting corners** (3 per side) instead of CNMG's **4 cutting corners** (2 per side). Both share the same 80° corner strength and clearance angle, giving you 50% more productivity per insert.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- BOTTOM TECHNICAL MATRIX \u0026 TROUBLESHOOTING BANNER --\u003e\n\u003cdiv class=\"sumi-dark-banner\"\u003e\n\u003ch3\u003e🛠️ Grade Comparison, Equivalent Models \u0026amp; Troubleshooting\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWorkpiece Material Suitability Matrix:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e🟢 \u003cstrong\u003eSteel (P10 - P30):\u003c\/strong\u003e Primary Application (Best Tool Life \u0026amp; Surface Finish)\u003c\/li\u003e\n\u003cli\u003e🟡 \u003cstrong\u003eCast Iron (K15 - K25):\u003c\/strong\u003e Secondary Application (Ductile Iron under smooth cuts)\u003c\/li\u003e\n\u003cli\u003e🔴 \u003cstrong\u003eStainless Steel \/ Aluminum (M\/N):\u003c\/strong\u003e Not Recommended (Use AC6020M for Stainless, Uncoated for Aluminum)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eEquivalent Competitor Grades:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSandvik Coromant: \u003ccode\u003eGC4325 \/ GC4425\u003c\/code\u003e | Kennametal: \u003ccode\u003eKCP25B \/ KCP10B\u003c\/code\u003e | Iscar: \u003ccode\u003eIC8250 \/ IC8150\u003c\/code\u003e | Mitsubishi: \u003ccode\u003eMC6025 \/ VP15TF\u003c\/code\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTroubleshooting Common Machining Issues:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlank Wear Too Fast:\u003c\/strong\u003e Reduce cutting speed ($Vc$) by 15–20% or switch to AC810P for higher heat resistance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Chipping\/Fracture:\u003c\/strong\u003e Increase edge toughness by switching from AC820P to AC830P or reduce feed rate ($fn$).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBird-Nesting Chips:\u003c\/strong\u003e Increase feed rate ($fn$) or depth of cut ($ap$) to force chip engagement inside the SU breaker groove.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"font-size: 0.8rem; margin-top: 15px; opacity: 0.8;\"\u003e*Technical data verified according to ISO 1832:2017 \u0026amp; ANSI B212.4 specifications. Supported by Sumitomo Electric Hardmetal Cutting Tool Standards.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Sumitomo","offers":[{"title":"Default Title","offer_id":43398121521324,"sku":"WNMG080404N-SU AC820P","price":76.23,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/7328\/1708\/files\/SUMITOMO_WNMG080404N-SU_AC820P_carbide_insert_top_view_showing_SU_chipbreaker_geometry.jpg?v=1784945239","url":"https:\/\/cnchome-beyond.com\/products\/wnmg080404n-su-ac820p-sumitomo-10pcs","provider":"CNCHome-Beyond","version":"1.0","type":"link"}