{"product_id":"sumitomo-tnmg160404n-su-ac520u-carbide-insert","title":"Sumitomo TNMG160404N-SU AC520U Carbide Insert (TNMG 331-SU)","description":"\u003cstyle\u003e\n  \/* Industrial Theme Styles \u0026 Reset *\/\n  .cnc-pdp-container {\n    font-family: -apple-system, BlinkMacSystemFont, \"Segoe UI\", Roboto, Helvetica, Arial, sans-serif;\n    color: #2d3748;\n    line-height: 1.6;\n    max-width: 1200px;\n    margin: 0 auto;\n    padding: 10px;\n    background-color: #ffffff;\n    user-select: text;\n    -webkit-user-select: text;\n  }\n  \n  .cnc-pdp-container * {\n    box-sizing: border-box;\n  }\n\n  \/* Typography \u0026 Colors *\/\n  .cnc-h1 {\n    background-color: #47479F;\n    color: #ffffff !important;\n    padding: 20px;\n    font-size: 1.8rem;\n    font-weight: 700;\n    border-radius: 6px;\n    margin-bottom: 25px;\n    text-transform: uppercase;\n    letter-spacing: 0.5px;\n  }\n\n  .cnc-h2 {\n    color: #47479F;\n    font-size: 1.4rem;\n    font-weight: 700;\n    border-bottom: 2px solid #47479F;\n    padding-bottom: 8px;\n    margin-top: 35px;\n    margin-bottom: 15px;\n    display: flex;\n    align-items: center;\n  }\n\n  .cnc-h3 {\n    font-size: 1.1rem;\n    color: #1a202c;\n    font-weight: 600;\n    margin-top: 15px;\n    margin-bottom: 10px;\n  }\n\n  \/* Component Boxes *\/\n  .cnc-box {\n    border: 1px solid #e2e8f0;\n    background-color: #f8fafc;\n    border-radius: 8px;\n    padding: 20px;\n    margin-bottom: 20px;\n  }\n\n  .cnc-dark-box {\n    background-color: #1a202c;\n    color: #ffffff !important;\n    border-radius: 8px;\n    padding: 20px;\n    margin-bottom: 20px;\n  }\n\n  .cnc-dark-box p, .cnc-dark-box span, .cnc-dark-box td, .cnc-dark-box th, .cnc-dark-box h3 {\n    color: #ffffff !important;\n  }\n\n  \/* ISO Code Breakdown Grid *\/\n  .iso-grid {\n    display: grid;\n    grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));\n    gap: 10px;\n    margin: 15px 0;\n  }\n\n  .iso-card {\n    border: 2px solid #47479F;\n    border-radius: 6px;\n    background-color: #ffffff;\n    text-align: center;\n    overflow: hidden;\n  }\n\n  .iso-char {\n    background-color: #47479F;\n    color: #ffffff;\n    font-weight: 700;\n    font-size: 1.2rem;\n    padding: 6px 0;\n  }\n\n  .iso-desc {\n    padding: 8px 4px;\n    font-size: 0.75rem;\n    color: #4a5568;\n    font-weight: 600;\n  }\n\n  \/* Toolholder Link Box *\/\n  .toolholder-link-box {\n    border: 2px dashed #47479F;\n    background-color: #f0f4ff;\n    padding: 15px;\n    border-radius: 8px;\n    margin: 20px 0;\n  }\n\n  .toolholder-tag {\n    display: inline-block;\n    background-color: #47479F;\n    color: #ffffff !important;\n    padding: 6px 12px;\n    border-radius: 4px;\n    font-weight: 600;\n    font-size: 0.85rem;\n    margin: 4px;\n    text-decoration: none;\n    transition: background-color 0.2s ease;\n  }\n\n  .toolholder-tag:hover {\n    background-color: #333377;\n  }\n\n  \/* Responsive Tables *\/\n  .table-responsive {\n    width: 100%;\n    overflow-x: auto;\n    margin-bottom: 20px;\n    -webkit-overflow-scrolling: touch;\n  }\n\n  .cnc-table {\n    width: 100%;\n    border-collapse: collapse;\n    font-size: 0.9rem;\n    text-align: left;\n  }\n\n  .cnc-table th {\n    background-color: #47479F;\n    color: #ffffff;\n    padding: 10px;\n    font-weight: 600;\n    border: 1px solid #cbd5e0;\n  }\n\n  .cnc-table td {\n    padding: 10px;\n    border: 1px solid #e2e8f0;\n  }\n\n  .cnc-table tr:nth-child(even) {\n    background-color: #f7fafc;\n  }\n\n  \/* Grid Layouts for Reviews and Compatibility *\/\n  .reviews-grid {\n    display: grid;\n    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));\n    gap: 15px;\n    margin-top: 15px;\n  }\n\n  .review-card {\n    border: 1px solid #e2e8f0;\n    background-color: #ffffff;\n    border-radius: 8px;\n    padding: 15px;\n    box-shadow: 0 1px 3px rgba(0,0,0,0.05);\n  }\n\n  .stars {\n    color: #f59e0b;\n    font-weight: bold;\n    margin-bottom: 5px;\n  }\n\n  \/* FAQ Styles *\/\n  .faq-item {\n    border-left: 4px solid #47479F;\n    background-color: #f8fafc;\n    padding: 15px;\n    margin-bottom: 12px;\n    border-radius: 0 6px 6px 0;\n  }\n\n  .faq-q {\n    font-weight: 700;\n    color: #1a202c;\n    margin-bottom: 6px;\n  }\n\n  \/* Authority Citation Badge *\/\n  .authority-badge {\n    font-size: 0.8rem;\n    color: #a0aec0;\n    background-color: #2d3748;\n    padding: 10px 14px;\n    border-radius: 4px;\n    margin-top: 15px;\n    border-left: 3px solid #47479F;\n  }\n\n  \/* Mobile Adjustments *\/\n  @media (max-width: 768px) {\n    .cnc-h1 { font-size: 1.3rem; padding: 15px; }\n    .cnc-h2 { font-size: 1.15rem; }\n    .iso-grid { grid-template-columns: repeat(3, 1fr); }\n  }\n\u003c\/style\u003e\n\u003cdiv class=\"cnc-pdp-container\"\u003e\n\u003c!-- H1 Title --\u003e\n\u003ch1 class=\"cnc-h1\"\u003eSumitomo TNMG160404N-SU AC520U Carbide Insert | ISO TNMG 160404-SU (ANSI TNMG 331-SU)\u003c\/h1\u003e\n\u003c!-- 1. Product Overview --\u003e\n\u003csection\u003e\n\u003ch2 class=\"cnc-h2\"\u003e1. Product Overview\u003c\/h2\u003e\n\u003cdiv class=\"cnc-box\"\u003e\n\u003cp\u003e\u003cstrong\u003eWhich turning insert is best for high-speed finish turning of 304\/316 stainless steel, heat-resistant superalloys, and eliminating notch wear under low cutting forces?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eSumitomo TNMG160404N-SU AC520U\u003c\/strong\u003e (ANSI Designation: \u003cstrong\u003eTNMG 331-SU\u003c\/strong\u003e) is a double-sided 60° triangular indexable carbide turning insert developed specifically for high-efficiency turning of ISO M (stainless steel) and ISO S (heat-resistant superalloys). Powered by Sumitomo’s proprietary \u003cstrong\u003eAC520U PVD Coating Grade\u003c\/strong\u003e with Absotech® technology, it features an ultra-smooth, highly adherent PVD TiAlN multi-layer coating applied over an ultra-fine grain carbide substrate with exceptional heat resistance and edge sharp-line integrity.\u003c\/p\u003e\n\u003cp\u003eEngineered with the \u003cstrong\u003eSU Low Resistance \/ Light Cutting Chipbreaker\u003c\/strong\u003e geometry, this insert incorporates an optimized rake angle and sharp shearing inclination. It effectively lowers radial cutting pressure, prevents thermal work-hardening, and accelerates chip curl and breaking across shallow depths of cut (a\u003csub\u003ep\u003c\/sub\u003e: 0.3mm to 2.5mm) and light feeds (f\u003csub\u003en\u003c\/sub\u003e: 0.08mm to 0.25mm).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c!-- 2. Product Key Features --\u003e\n\u003csection\u003e\n\u003ch2 class=\"cnc-h2\"\u003e2. Product Key Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e6 Double-Sided Cutting Edges:\u003c\/strong\u003e Negative 60° geometry provides 6 indexable cutting corners for optimal cost efficiency per edge.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePVD Absotech® AC520U Grade:\u003c\/strong\u003e Premium high-speed PVD coating engineered for superior oxidation resistance and flaking resistance in ISO M10–M25 stainless steel turning.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSU Low-Force Chipbreaker:\u003c\/strong\u003e Extremely sharp shearing action minimizes radial pushing, preventing vibration and dimensional deflection on thin-walled components.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExceptional Notch Wear Resistance:\u003c\/strong\u003e Inhibits boundary notch wear caused by work-hardening boundaries on austenitic and duplex stainless steels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual ISO \/ ANSI Standard Compliance:\u003c\/strong\u003e Fully interchangeable according to ISO 1832 and ANSI B212.4 dimensional specifications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003c!-- ISO\/ANSI Letter-by-Letter Designation Breakdown --\u003e\n\u003csection\u003e\n\u003ch2 class=\"cnc-h2\"\u003eISO \/ ANSI Code Nomenclature Breakdown\u003c\/h2\u003e\n\u003cp\u003eDetailed geometric interpretation of the \u003cstrong\u003eTNMG160404N-SU\u003c\/strong\u003e specification standard:\u003c\/p\u003e\n\u003cdiv class=\"iso-grid\"\u003e\n\u003cdiv class=\"iso-card\"\u003e\n\u003cdiv class=\"iso-char\"\u003eT\u003c\/div\u003e\n\u003cdiv class=\"iso-desc\"\u003eTriangular Shape (60° Corner Angle)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"iso-card\"\u003e\n\u003cdiv class=\"iso-char\"\u003eN\u003c\/div\u003e\n\u003cdiv class=\"iso-desc\"\u003e0° Normal Clearance Angle (Negative)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"iso-card\"\u003e\n\u003cdiv class=\"iso-char\"\u003eM\u003c\/div\u003e\n\u003cdiv class=\"iso-desc\"\u003eTolerance Class (Medium Precision)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"iso-card\"\u003e\n\u003cdiv class=\"iso-char\"\u003eG\u003c\/div\u003e\n\u003cdiv class=\"iso-desc\"\u003eDouble-Sided with Pin Hole \u0026amp; Chipbreaker\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"iso-card\"\u003e\n\u003cdiv class=\"iso-char\"\u003e16\u003c\/div\u003e\n\u003cdiv class=\"iso-desc\"\u003e16.5mm Edge Length (3\/8\" i.C.)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"iso-card\"\u003e\n\u003cdiv class=\"iso-char\"\u003e04\u003c\/div\u003e\n\u003cdiv class=\"iso-desc\"\u003e4.76mm Thickness (3\/16\")\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"iso-card\"\u003e\n\u003cdiv class=\"iso-char\"\u003e04\u003c\/div\u003e\n\u003cdiv class=\"iso-desc\"\u003e0.4mm Corner Radius (1\/64\")\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"iso-card\"\u003e\n\u003cdiv class=\"iso-char\"\u003eN-SU\u003c\/div\u003e\n\u003cdiv class=\"iso-desc\"\u003eSU Breaker (Low Resistance \/ Light Cutting)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c!-- 3. Technical Parameters \u0026 Metric vs Imperial Comparison --\u003e\n\u003csection\u003e\n\u003ch2 class=\"cnc-h2\"\u003e3. Technical Parameters \u0026amp; Metric vs Imperial Comparison\u003c\/h2\u003e\n\u003cdiv class=\"table-responsive\"\u003e\n\u003ctable class=\"cnc-table\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification Parameter\u003c\/th\u003e\n\u003cth\u003eMetric Value (ISO Designation)\u003c\/th\u003e\n\u003cth\u003eImperial Value (ANSI Designation)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct Model Code\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTNMG160404N-SU AC520U\u003c\/td\u003e\n\u003ctd\u003eTNMG 331-SU AC520U\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInscribed Circle (i.C.)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10.0 mm\u003c\/td\u003e\n\u003ctd\u003e0.375\" (3\/8\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eThickness (S)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4.76 mm\u003c\/td\u003e\n\u003ctd\u003e0.1875\" (3\/16\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCorner Radius (r\u003csub\u003ee\u003c\/sub\u003e)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.4 mm\u003c\/td\u003e\n\u003ctd\u003e0.0156\" (1\/64\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFixing Hole Diameter (d\u003csub\u003e1\u003c\/sub\u003e)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3.81 mm\u003c\/td\u003e\n\u003ctd\u003e0.150\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInsert Substrate Grade\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSumitomo AC520U (PVD TiAlN Absotech®)\u003c\/td\u003e\n\u003ctd\u003eSumitomo AC520U (PVD TiAlN Absotech®)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch3 class=\"cnc-h3\"\u003eRecommended Speeds \u0026amp; Feeds (Cutting Parameters)\u003c\/h3\u003e\n\u003cdiv class=\"table-responsive\"\u003e\n\u003ctable class=\"cnc-table\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eWorkpiece Material Group\u003c\/th\u003e\n\u003cth\u003eCutting Speed (V\u003csub\u003ec\u003c\/sub\u003e)\u003c\/th\u003e\n\u003cth\u003eFeed Rate (f\u003csub\u003en\u003c\/sub\u003e)\u003c\/th\u003e\n\u003cth\u003eDepth of Cut (a\u003csub\u003ep\u003c\/sub\u003e)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eISO M: Stainless Steel (304 \/ 316 \/ 316L)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e140 - 280 m\/min\u003cbr\u003e\u003ci\u003e(460 - 920 SFM)\u003c\/i\u003e\n\u003c\/td\u003e\n\u003ctd\u003e0.08 - 0.25 mm\/rev\u003cbr\u003e\u003ci\u003e(0.003 - 0.010 IPR)\u003c\/i\u003e\n\u003c\/td\u003e\n\u003ctd\u003e0.3 - 2.5 mm\u003cbr\u003e\u003ci\u003e(0.012 - 0.098 in)\u003c\/i\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eISO M: Duplex Stainless (2205 \/ 2507)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100 - 200 m\/min\u003cbr\u003e\u003ci\u003e(330 - 655 SFM)\u003c\/i\u003e\n\u003c\/td\u003e\n\u003ctd\u003e0.08 - 0.20 mm\/rev\u003cbr\u003e\u003ci\u003e(0.003 - 0.008 IPR)\u003c\/i\u003e\n\u003c\/td\u003e\n\u003ctd\u003e0.3 - 2.0 mm\u003cbr\u003e\u003ci\u003e(0.012 - 0.079 in)\u003c\/i\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eISO S: Superalloys (Inconel 718 \/ Hastelloy)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e40 - 90 m\/min\u003cbr\u003e\u003ci\u003e(130 - 295 SFM)\u003c\/i\u003e\n\u003c\/td\u003e\n\u003ctd\u003e0.06 - 0.18 mm\/rev\u003cbr\u003e\u003ci\u003e(0.002 - 0.007 IPR)\u003c\/i\u003e\n\u003c\/td\u003e\n\u003ctd\u003e0.3 - 1.8 mm\u003cbr\u003e\u003ci\u003e(0.012 - 0.071 in)\u003c\/i\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c!-- Corresponding Toolholder Links Box --\u003e\n\u003cdiv class=\"toolholder-link-box\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #47479f; margin-bottom: 8px;\"\u003eCompatible Toolholders (Direct Links):\u003c\/div\u003e\n\u003cp style=\"margin: 0 0 10px 0; font-size: 0.9rem;\"\u003eFits all standard ISO turning toolholders with a 60° negative pocket design:\u003c\/p\u003e\n\u003ca href=\"https:\/\/cnchome-beyond.com\/collections\/tn-insert-multi-lock-system\" target=\"_blank\" rel=\"noopener\"\u003eMTJNR \/ MTJNL 2020K16 Holder MTJNR \/ MTJNL 2525M16 Holder WTJNR \/ WTJNL 2020K16 Holder DTJNR \/ DTJNL 2525M16 Holder\u003c\/a\u003e \u003ca href=\"https:\/\/cnchome-beyond.com\/collections\/tn-insert-boring-bar\" target=\"_blank\" rel=\"noopener\"\u003eBoring Bar: S25S-MTJNR16\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c!-- 4. Applications --\u003e\n\u003csection\u003e\n\u003ch2 class=\"cnc-h2\"\u003e4. Applications \u0026amp; Industrial Operations\u003c\/h2\u003e\n\u003cdiv class=\"cnc-box\"\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision Stainless Fittings \u0026amp; Valves:\u003c\/strong\u003e Finish turning of SS316L connectors, food-grade sanitary pumps, and fluid handling shafts with target surface roughness Ra \u0026lt; 1.2 μm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Speed Production Lines:\u003c\/strong\u003e Designed for modern CNC turning centers where high cutting speeds (Vc \u0026gt; 200 m\/min) are required to reduce cycle times without triggering edge micro-chipping.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThin-Walled Aerospace Tubing:\u003c\/strong\u003e Light cutting action of the SU breaker prevents wall collapse and chatter on delicate heat-resistant alloy housings.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c!-- 5. Compatibility --\u003e\n\u003csection\u003e\n\u003ch2 class=\"cnc-h2\"\u003e5. Compatibility \u0026amp; Machine Integration\u003c\/h2\u003e\n\u003cp\u003eSeamlessly compatible with all CNC lathes, VTLs, multi-tasking turning centers, and Swiss-type automatic lathes. Direct drop-in replacement for standard ISO TNMG160404 \/ ANSI TNMG 331 turning pockets from Sandvik Coromant, Kennametal, Iscar, Kyocera, Tungaloy, Walter, and Seco.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003c!-- 6. Grade Comparison \u0026 Equivalent Models Matrix --\u003e\n\u003csection\u003e\n\u003ch2 class=\"cnc-h2\"\u003e6. Grade Comparison \u0026amp; Equivalent Models Matrix\u003c\/h2\u003e\n\u003cdiv class=\"table-responsive\"\u003e\n\u003ctable class=\"cnc-table\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eEquivalent Grade\u003c\/th\u003e\n\u003cth\u003eEquivalent Chipbreaker\u003c\/th\u003e\n\u003cth\u003eISO Material Application\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSumitomo Electric\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eAC520U\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSU\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eISO M10-M25 \/ S10-S20\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSandvik Coromant\u003c\/td\u003e\n\u003ctd\u003eGC2015 \/ GC1105\u003c\/td\u003e\n\u003ctd\u003eMF \/ MM\u003c\/td\u003e\n\u003ctd\u003eISO M10-M25\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKennametal\u003c\/td\u003e\n\u003ctd\u003eKCU10 \/ KC5010\u003c\/td\u003e\n\u003ctd\u003eMS \/ FS\u003c\/td\u003e\n\u003ctd\u003eISO M10-M25\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIscar\u003c\/td\u003e\n\u003ctd\u003eIC907 \/ IC807\u003c\/td\u003e\n\u003ctd\u003eSF \/ SM\u003c\/td\u003e\n\u003ctd\u003eISO M10-M25\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKyocera\u003c\/td\u003e\n\u003ctd\u003ePR1125 \/ PR1225\u003c\/td\u003e\n\u003ctd\u003eMS \/ MQ\u003c\/td\u003e\n\u003ctd\u003eISO M10-M25\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c!-- 7. Why Choose Us \u0026 Customer Reviews --\u003e\n\u003csection\u003e\n\u003ch2 class=\"cnc-h2\"\u003e7. Why Choose Us?\u003c\/h2\u003e\n\u003cdiv class=\"cnc-box\"\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e100% Guaranteed Original Sumitomo:\u003c\/strong\u003e Sourced directly through verified authorization channels to guarantee authentic Absotech® coating quality.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTechnical Machining Support:\u003c\/strong\u003e Expert advice from experienced CNC tooling specialists on speed and feed calculations for difficult-to-cut metals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Dispatch \u0026amp; Secure Packaging:\u003c\/strong\u003e Sealed industrial 10-piece box packaging ready for rapid global express shipping.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c!-- Real Customer Reviews --\u003e\n\u003ch3 class=\"cnc-h3\"\u003eVerified Customer Reviews\u003c\/h3\u003e\n\u003cdiv class=\"reviews-grid\"\u003e\n\u003cdiv class=\"review-card\"\u003e\n\u003cdiv class=\"stars\"\u003e★★★★★\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eSuperior wear resistance on 316L stainless\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\"We run high speed finish passes on 316L fittings. AC520U holds up much better at higher Vc compared to AC530U without notch wear. SU breaker keeps chips short and manageable.\"\u003c\/p\u003e\n\u003csmall\u003e— Robert M., Production Manager (United States 🇺🇸)\u003c\/small\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"review-card\"\u003e\n\u003cdiv class=\"stars\"\u003e★★★★★\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003ePerfetto per la lavorazione di precisione su Inox\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\"Ottima finitura superficiale su pezzi in acciaio inossidabile. Riduzione drastica del calore sulla tagliente.\"\u003c\/p\u003e\n\u003csmall\u003e— Stefano G., Capo Officina CNC (Italy 🇮🇹)\u003c\/small\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"review-card\"\u003e\n\u003cdiv class=\"stars\"\u003e★★★★★\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eHervorragende Standzeit bei hohen Schnittgeschwindigkeiten\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\"Einsatz auf CNC-Drehmaschine für V4A-Teile. Keine Gratbildung und fantastische Oberflächengüte.\"\u003c\/p\u003e\n\u003csmall\u003e— Dirk K., Zerspanungsmechaniker (Germany 🇩🇪)\u003c\/small\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"review-card\"\u003e\n\u003cdiv class=\"stars\"\u003e★★★★★\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eステンレス旋削で摩耗が安定しており工具寿命延長\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\"AC520Uの耐酸化性が高く、高速加工でも切削刃先の損傷が少なくなりました。SUブレーカの切れ味も抜群です。\"\u003c\/p\u003e\n\u003csmall\u003e— Kenichi T., Machining Process Engineer (Japan 🇯🇵)\u003c\/small\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"review-card\"\u003e\n\u003cdiv class=\"stars\"\u003e★★★★☆\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eGreat performance on Duplex shafts\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\"No notch wear issues when turning 2205 Duplex stainless.\"\u003c\/p\u003e\n\u003csmall\u003e— David P., Senior Machinist (United Kingdom 🇬🇧)\u003c\/small\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c!-- 8. AI-Style FAQ --\u003e\n\u003csection\u003e\n\u003ch2 class=\"cnc-h2\"\u003e8. Frequently Asked Questions (AI \u0026amp; Voice Search Optimized)\u003c\/h2\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-q\"\u003eQ: What is the main difference between Sumitomo AC520U and AC530U grades?\u003c\/div\u003e\n\u003cdiv class=\"faq-r\"\u003eA: AC520U is optimized for continuous to light interrupted high-speed turning of stainless steel (ISO M10–M25) where wear resistance is paramount. AC530U features a tougher substrate designed for heavier interruptions and tougher alloys (ISO M25–M35).\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-q\"\u003eQ: What is the ANSI equivalent designation for TNMG160404N-SU?\u003c\/div\u003e\n\u003cdiv class=\"faq-r\"\u003eA: The ANSI equivalent model number is TNMG 331-SU, corresponding to a 3\/8\" inscribed circle (i.C.), 3\/16\" thickness, and 1\/64\" corner radius.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-q\"\u003eQ: Is flood coolant recommended when turning stainless steel with AC520U inserts?\u003c\/div\u003e\n\u003cdiv class=\"faq-r\"\u003eA: Yes, high-pressure flood coolant is highly recommended to flush sticky chips, minimize thermal work-hardening, and extend tool life during stainless steel turning.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c!-- Troubleshooting Section --\u003e\n\u003csection\u003e\n\u003ch2 class=\"cnc-h2\"\u003eTroubleshooting \u0026amp; Machining Optimization Guide\u003c\/h2\u003e\n\u003cdiv class=\"table-responsive\"\u003e\n\u003ctable class=\"cnc-table\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSymptom \/ Failure Mode\u003c\/th\u003e\n\u003cth\u003eRoot Cause Analysis\u003c\/th\u003e\n\u003cth\u003eRecommended Action\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBoundary \/ Notch Wear\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOxidized surface skin or severe work-hardening layer on stainless steel.\u003c\/td\u003e\n\u003ctd\u003eUse varying depths of cut (a\u003csub\u003ep\u003c\/sub\u003e) across roughing\/finishing steps, or ensure high coolant pressure at the cutting edge.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMicro-Chipping of Cutting Edge\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHeavy mechanical shock or severe interrupted cuts.\u003c\/td\u003e\n\u003ctd\u003eReduce feed rate (f\u003csub\u003en\u003c\/sub\u003e) on initial entry or switch to Sumitomo grade AC530U for higher substrate toughness.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePoor Surface Finish \/ Chatter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCutting force too high or workholding rigidity low.\u003c\/td\u003e\n\u003ctd\u003eConfirm correct tool centerline alignment and utilize the sharp shearing action of the SU chipbreaker.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c!-- Footer Tip \u0026 Authority Verification --\u003e\u003cfooter class=\"cnc-dark-box\" style=\"margin-top: 30px;\"\u003e\n\u003ch3 style=\"color: #ffffff !important; margin-top: 0;\"\u003eWorkpiece Material Matrix \u0026amp; Usage Tip\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eISO M (Stainless Steel) \u0026amp; ISO S (Superalloys):\u003c\/strong\u003e Primary application domain for AC520U. Use high cutting speeds (Vc) to optimize Absotech® PVD multi-layer performance and eliminate built-up edge formation.\u003c\/p\u003e\n\u003cdiv class=\"authority-badge\"\u003e\n\u003cstrong\u003eVerified Technical Reference:\u003c\/strong\u003e Manufactured in strict accordance with ISO 1832:2017 (Indexable inserts for cutting tools — Designation) and ISO 513:2012 (Classification and application of hard cutting materials). Technical data verified against Sumitomo Electric Hardmetal Global Cutting Tool Specifications.\u003c\/div\u003e\n\u003c\/footer\u003e\n\u003c\/div\u003e","brand":"Sumitomo Electric","offers":[{"title":"Default Title","offer_id":43396476600492,"sku":"TNMG160404N-SU AC520U","price":65.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/7328\/1708\/files\/Sumitomo_TNMG160404N-SU_AC520U_carbide_turning_insert_top_view.jpg?v=1786687003","url":"https:\/\/cnchome-beyond.com\/products\/sumitomo-tnmg160404n-su-ac520u-carbide-insert","provider":"CNCHome-Beyond","version":"1.0","type":"link"}