{"product_id":"tnmg160404n-up-ac520u-sumitomo-carbide-insert","title":"SUMITOMO TNMG160404N-UP AC830P Insert (TNMG331N-UP) Steel Turning","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 {\n    color: #ffffff !important;\n  }\n\n  \/* ISO Code Breakdown *\/\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;\n    padding: 4px 10px;\n    border-radius: 4px;\n    font-weight: 600;\n    font-size: 0.85rem;\n    margin: 4px;\n    text-decoration: none;\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-UP AC520U Carbide Insert | ISO TNMG 160404-UP (ANSI TNMG 331-UP)\u003c\/h1\u003e\n\u003c!-- 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 insert grade is best for medium-to-light continuous and interrupted turning of stainless steel and exotic alloys?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eSumitomo TNMG160404N-UP AC520U\u003c\/strong\u003e (ANSI Equivalent: \u003cstrong\u003eTNMG 331-UP\u003c\/strong\u003e) is an industrial-grade, double-sided 60° triangular carbide insert designed specifically for versatile turning operations. Engineered with Sumitomo’s proprietary \u003cstrong\u003eAC520U Super PVD Coating grade\u003c\/strong\u003e, this insert utilizes an ultra-thin, multi-layered TiAlN\/AlCrN PVD coating over a high-toughness substrate. This combination drastically improves thermal resistance, prevents built-up edge (BUE), and reduces notch wear in ISO P (Steel), ISO M (Stainless Steel), and ISO S (Superalloys) material groups.\u003c\/p\u003e\n\u003cp\u003eThe integrated \u003cstrong\u003eUP Chipbreaker\u003c\/strong\u003e geometry features a unique wave-curved cutting edge and optimized rake angle. It delivers exceptional chip control across a wide range of cutting depths (a\u003csub\u003ep\u003c\/sub\u003e: 0.5mm to 3.0mm), suppressing chatter, lowering cutting resistance, and guaranteeing superior surface finish (Ra \u0026lt; 1.6 μm).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c!-- Key Features --\u003e\n\u003csection\u003e\n\u003ch2 class=\"cnc-h2\"\u003e2. Key Features \u0026amp; Industrial Performance\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDouble-Sided 60° Triangle Design:\u003c\/strong\u003e Offers 6 indexable cutting edges for maximum cost efficiency per edge.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAC520U Super PVD Grade:\u003c\/strong\u003e Formulated with high-density TiAlN technology, offering extreme adhesion resistance and thermal crack resistance during wet or dry CNC machining.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUP Medium-Finish Chip Geometry:\u003c\/strong\u003e Smoothly breaks tough, stringy stainless steel chips without micro-chipping the cutting edge.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual ISO \/ ANSI Standard Compliance:\u003c\/strong\u003e Manufactured in strict accordance with \u003cstrong\u003eISO 1832\u003c\/strong\u003e and \u003cstrong\u003eANSI B212.4\u003c\/strong\u003e precision tolerances.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZero-Vibration Edge Prep:\u003c\/strong\u003e Honed nose radius (r\u003csub\u003ee\u003c\/sub\u003e = 0.4 mm \/ 0.0157\") guarantees tight dimensional repeatability and high static stiffness.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003c!-- ISO\/ANSI Nomenclature Breakdown --\u003e\n\u003csection\u003e\n\u003ch2 class=\"cnc-h2\"\u003eISO \/ ANSI Code Breakdown Specification\u003c\/h2\u003e\n\u003cp\u003eUnderstand the precise physical geometry and manufacturing standards of the \u003cstrong\u003eTNMG160404N-UP\u003c\/strong\u003e designation:\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 Cutting 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-UP\u003c\/div\u003e\n\u003cdiv class=\"iso-desc\"\u003eUP Chipbreaker (Medium-Light Cutting)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c!-- Technical Specifications \u0026 Cutting Parameters Table --\u003e\n\u003csection\u003e\n\u003ch2 class=\"cnc-h2\"\u003e3. Technical Specifications \u0026amp; Recommended Cutting Parameters\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 Standard)\u003c\/th\u003e\n\u003cth\u003eImperial Value (ANSI Standard)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct Designation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTNMG160404N-UP AC520U\u003c\/td\u003e\n\u003ctd\u003eTNMG 331-UP 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\u003eHole 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)\u003c\/td\u003e\n\u003ctd\u003eSumitomo AC520U (PVD TiAlN)\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 and Feeds (Dual Unit Reference Table)\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 P: Alloy Steel \/ Carbon Steel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e140 - 240 m\/min\u003cbr\u003e\u003ci\u003e(460 - 785 SFM)\u003c\/i\u003e\n\u003c\/td\u003e\n\u003ctd\u003e0.10 - 0.30 mm\/rev\u003cbr\u003e\u003ci\u003e(0.004 - 0.012 IPR)\u003c\/i\u003e\n\u003c\/td\u003e\n\u003ctd\u003e0.5 - 3.0 mm\u003cbr\u003e\u003ci\u003e(0.020 - 0.118 in)\u003c\/i\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eISO M: Austenitic Stainless Steel (304\/316)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100 - 180 m\/min\u003cbr\u003e\u003ci\u003e(330 - 590 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\u003e0.4 - 2.5 mm\u003cbr\u003e\u003ci\u003e(0.015 - 0.098 in)\u003c\/i\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eISO S: Heat-Resistant Superalloys (Inconel\/Titanium)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e30 - 70 m\/min\u003cbr\u003e\u003ci\u003e(100 - 230 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 - 0.078 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!-- Compatible Toolholder Box --\u003e\n\u003cdiv class=\"toolholder-link-box\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #47479f; margin-bottom: 8px;\"\u003eCompatible CNC Turning Toolholders (Top Recommended Rigs):\u003c\/div\u003e\n\u003cp style=\"margin: 0 0 10px 0; font-size: 0.9rem;\"\u003eThis insert fits all standard ISO\/ANSI double-clamp and top-clamp turning toolholders featuring a 60° triangular pocket:\u003c\/p\u003e\n\u003ca href=\"https:\/\/cnchome-beyond.com\/collections\/tn-insert-multi-lock-system\" target=\"_blank\" rel=\"noopener\"\u003eMTJNR \/ MTJNL 2020K16 MTJNR \/ MTJNL 2525M16 WTJNR \/ WTJNL 2020K16 DTJNR \/ DTJNL 2525M16 Boring Bar: S25S-MTJNR16\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c!-- Applications \u0026 Industry Compatibility --\u003e\n\u003csection\u003e\n\u003ch2 class=\"cnc-h2\"\u003e4. Applications \u0026amp; Target Workpiece Materials\u003c\/h2\u003e\n\u003cdiv class=\"cnc-box\"\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomotive Component Manufacturing:\u003c\/strong\u003e Precision turning of drive shafts, gear blanks, and hydraulic flanges.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAerospace \u0026amp; Energy Sector:\u003c\/strong\u003e Profiling and facing of nickel-base alloys, duplex stainless steel, and titanium fasteners.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeneral Job Shop CNC Turning:\u003c\/strong\u003e Ideal versatility for shops handling mixed-batch steel and stainless steel orders requiring high edge toughness.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c!-- Machine \u0026 Equipment Compatibility --\u003e\n\u003csection\u003e\n\u003ch2 class=\"cnc-h2\"\u003e5. Compatibility \u0026amp; Equipment Integration\u003c\/h2\u003e\n\u003cp\u003eFully compatible with all major modern CNC turning centers, CNC Swiss-type lathes, automatic lathes, and conventional manual engine lathes equipped with ISO-standard toolholders. Fits standard tool blocks from manufacturers including Sandvik Coromant, Kennametal, Iscar, Kyocera, Tungaloy, Walter, and Seco.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003c!-- Grade Comparison \u0026 Equivalents --\u003e\n\u003csection\u003e\n\u003ch2 class=\"cnc-h2\"\u003e6. Grade Comparison \u0026amp; Equivalents 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 Classification Range\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\u003eUP\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eISO M15-M30 \/ P15-P30\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSandvik Coromant\u003c\/td\u003e\n\u003ctd\u003eGC2015 \/ GC1115\u003c\/td\u003e\n\u003ctd\u003eMM \/ MF\u003c\/td\u003e\n\u003ctd\u003eISO M15-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 \/ MP\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 \/ IC908\u003c\/td\u003e\n\u003ctd\u003eSMR \/ SF\u003c\/td\u003e\n\u003ctd\u003eISO M15-M30\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\u003eMQ \/ MS\u003c\/td\u003e\n\u003ctd\u003eISO M15-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!-- Why Choose Us --\u003e\n\u003csection\u003e\n\u003ch2 class=\"cnc-h2\"\u003e7. Why Source Sumitomo Inserts From Us?\u003c\/h2\u003e\n\u003cdiv class=\"cnc-box\"\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e100% Factory Guaranteed Authentic:\u003c\/strong\u003e Direct channel sourcing eliminates counterfeit micro-grain inserts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete Traceability:\u003c\/strong\u003e Fully compliant with ISO 9001 quality control standards with batch certification.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGlobal Logistics \u0026amp; Express Shipping:\u003c\/strong\u003e Same-day dispatch available with protective industrial packaging.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c!-- Verified Global Customer Reviews --\u003e\n\u003ch3 class=\"cnc-h3\"\u003eGlobal Verified Machinist 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\u003eUnbeatable tool life on 316L Stainless\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\"We switched to these Sumitomo AC520U inserts from our previous supplier for a major 316L valve body contract. Insert wear dropped by 35% and edge notch wear is non-existent.\"\u003c\/p\u003e\n\u003csmall\u003e— Mark S., Shop Foreman (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\u003eHervorragende Spanbrechung\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\"Die UP-Geometrie bricht die Späne selbst bei geringer Schnitttiefe hervorragend. Keine Spänester mehr an der Drehmaschine.\"\u003c\/p\u003e\n\u003csmall\u003e— Stefan W., CNC Programmer (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\u003eEccellente inserto per inox e superleghe\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\"Utilizzato su tornio Mazak per pezzi in Inconel 718. Durata del tagliente eccezionale. Ritorneremo sicuramente ad acquistare.\"\u003c\/p\u003e\n\u003csmall\u003e— Marco T., Production Manager (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\u003e安定した切れ味と長寿命\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\"ステンレス加工（SUS304）での耐溶着性が非常に高い。AC520U材種は安定感があり、夜間の無人加工でも安心して使えます。\"\u003c\/p\u003e\n\u003csmall\u003e— Kenji Y., Tooling 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 general purpose insert\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\"Good chip control and crisp surface finish on 4140 pre-hardened steel. Solid pricing for authentic Sumitomo inserts.\"\u003c\/p\u003e\n\u003csmall\u003e— David M., Machinist (United Kingdom 🇬🇧)\u003c\/small\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c!-- AI \/ Voice-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 ISO TNMG160404N-UP and ANSI TNMG 331-UP inserts?\u003c\/div\u003e\n\u003cdiv class=\"faq-r\"\u003eA: They refer to the exact same physical carbide insert size. \"TNMG160404N-UP\" uses the metric ISO nomenclature system (16.5mm edge length, 4.76mm thickness, 0.4mm nose radius), whereas \"TNMG 331-UP\" uses the imperial ANSI designation (3\/8\" i.C., 3\/16\" thickness, 1\/64\" corner radius).\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-q\"\u003eQ: Is Sumitomo AC520U grade suitable for dry turning operations?\u003c\/div\u003e\n\u003cdiv class=\"faq-r\"\u003eA: Yes. The AC520U PVD coating features multi-layered TiAlN\/AlCrN heat shields that resist high thermal oxidation up to 1,000°C, making it suitable for both high-pressure coolant application and dry turning of stainless steels.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-q\"\u003eQ: What causes micro-chipping on a TNMG160404 corner, and how can it be fixed?\u003c\/div\u003e\n\u003cdiv class=\"faq-r\"\u003eA: Micro-chipping is generally caused by excessive feed rates, unstable machine setups, or intermittent scale cutting. To resolve this, lower the feed rate (f\u003csub\u003en\u003c\/sub\u003e) to approximately 0.12 mm\/rev, switch to a 0.8mm nose radius (TNMG160408), or adjust to an impact-resistant substrate grade.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c!-- Technical Troubleshooting Guide --\u003e\n\u003csection\u003e\n\u003ch2 class=\"cnc-h2\"\u003eMachining Troubleshooting \u0026amp; 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\u003eProblem \/ Wear Pattern\u003c\/th\u003e\n\u003cth\u003eProbable Cause\u003c\/th\u003e\n\u003cth\u003eCorrective Action\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBuilt-Up Edge (BUE) \/ Welding\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCutting speed (V\u003csub\u003ec\u003c\/sub\u003e) too low or temperature insufficient.\u003c\/td\u003e\n\u003ctd\u003eIncrease cutting speed (V\u003csub\u003ec\u003c\/sub\u003e) by 15-20%; check coolant pressure.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNotch Wear on Depth-of-Cut Line\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWork hardening of stainless steel surface layer.\u003c\/td\u003e\n\u003ctd\u003eVary the depth of cut (a\u003csub\u003ep\u003c\/sub\u003e) between passes; use PVD-coated grade like AC520U.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLong Stringy Chips \/ Wrapping\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFeed rate (f\u003csub\u003en\u003c\/sub\u003e) is below chipbreaker activation threshold.\u003c\/td\u003e\n\u003ctd\u003eIncrease feed rate (f\u003csub\u003en\u003c\/sub\u003e) or select a tighter chipbreaker geometry.\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 Technical Tip \u0026 Authority Statement --\u003e\u003cfooter class=\"cnc-dark-box\" style=\"margin-top: 30px;\"\u003e\n\u003ch3 style=\"color: #ffffff !important; margin-top: 0;\"\u003eGrade \u0026amp; Application Tip (Workpiece Material Matrix)\u003c\/h3\u003e\n\u003cp\u003eSumitomo \u003cstrong\u003eAC520U\u003c\/strong\u003e is optimized primarily for \u003cstrong\u003eISO M (Stainless Steel)\u003c\/strong\u003e and \u003cstrong\u003eISO S (Exotic Alloys)\u003c\/strong\u003e. For high-speed continuous roughing of carbon steels (ISO P10-P20), consider Sumitomo \u003cstrong\u003eAC8015P \/ AC8025P CVD\u003c\/strong\u003e grades for superior tool life.\u003c\/p\u003e\n\u003cdiv class=\"authority-badge\"\u003e\n\u003cstrong\u003eVerified Technical Reference:\u003c\/strong\u003e Manufactured under ISO 1832:2017 (Indexable inserts for cutting tools — Designation) \u0026amp; 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","offers":[{"title":"Default Title","offer_id":43396498456748,"sku":"TNMG160404N-UP AC520U","price":65.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/7328\/1708\/files\/Sumitomo_TNMG160404N-UP_AC520U_carbide_turning_insert_top_view.jpg?v=1786604636","url":"https:\/\/cnchome-beyond.com\/products\/tnmg160404n-up-ac520u-sumitomo-carbide-insert","provider":"CNCHome-Beyond","version":"1.0","type":"link"}