{"product_id":"sumitomo-tnmg160404n-gu-ac830p-carbide-insert","title":"Sumitomo TNMG160404N-GU AC830P Carbide Insert (TNMG 331-GU)","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-GU AC830P Carbide Insert | ISO TNMG 160404-GU (ANSI TNMG 331-GU)\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 heavy interrupted steel turning, high impact roughing, and preventing micro-chipping on forged steel?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eSumitomo TNMG160404N-GU AC830P\u003c\/strong\u003e (ANSI Designation: \u003cstrong\u003eTNMG 331-GU\u003c\/strong\u003e) is a double-sided 60° triangular indexable carbide turning insert engineered specifically for heavy roughing and tough, highly interrupted turning operations across ISO P30–P40 steel applications. Powered by Sumitomo’s ultra-tough \u003cstrong\u003eAC830P CVD Coating Grade\u003c\/strong\u003e with Absotech® technology, it features an engineered high-toughness substrate paired with a stress-controlled Al\u003csub\u003e2\u003c\/sub\u003eO\u003csub\u003e3\u003c\/sub\u003e \/ TiCN multi-layer coating designed to absorb severe impact energy and eliminate edge chipping during heavy shock cuts.\u003c\/p\u003e\n\u003cp\u003eFeaturing the versatile \u003cstrong\u003eGU Universal Medium-to-Roughing Chipbreaker\u003c\/strong\u003e, this insert incorporates an optimized rake angle bump design that lowers cutting resistance while effectively controlling chips across varying depths of cut (a\u003csub\u003ep\u003c\/sub\u003e: 0.8mm to 3.5mm) and feed rates (f\u003csub\u003en\u003c\/sub\u003e: 0.12mm to 0.40mm). It is the premier choice for machining forged steel shafts, keyway shafts, rough castings, and structural steel components under tough conditions.\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° triangular geometry provides 6 usable cutting corners for maximum tool economy.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCVD Absotech® AC830P Grade:\u003c\/strong\u003e High-impact resistance substrate engineered to prevent edge breakage and thermal cracking during interrupted cutting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGU Multi-Purpose Chipbreaker:\u003c\/strong\u003e Optimized 3D geometry provides stable chip breaking and smooth chip evacuation across a wide range of feeds and depths of cut.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExceptional Edge Toughness:\u003c\/strong\u003e Absorbs mechanical vibrations and severe interrupted forces when turning keyways, hex stock, and irregular forgings.\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-GU\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-GU\u003c\/div\u003e\n\u003cdiv class=\"iso-desc\"\u003eGU Breaker (General \/ Medium-Roughing)\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-GU AC830P\u003c\/td\u003e\n\u003ctd\u003eTNMG 331-GU AC830P\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 AC830P (CVD Al\u003csub\u003e2\u003c\/sub\u003eO\u003csub\u003e3\u003c\/sub\u003e\/TiCN Tough)\u003c\/td\u003e\n\u003ctd\u003eSumitomo AC830P (CVD Al\u003csub\u003e2\u003c\/sub\u003eO\u003csub\u003e3\u003c\/sub\u003e\/TiCN Tough)\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 P: Forged \u0026amp; Carbon Steel (Heavy Interrupted)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e120 - 280 m\/min\u003cbr\u003e\u003ci\u003e(390 - 920 SFM)\u003c\/i\u003e\n\u003c\/td\u003e\n\u003ctd\u003e0.12 - 0.40 mm\/rev\u003cbr\u003e\u003ci\u003e(0.005 - 0.016 IPR)\u003c\/i\u003e\n\u003c\/td\u003e\n\u003ctd\u003e0.8 - 3.5 mm\u003cbr\u003e\u003ci\u003e(0.031 - 0.138 in)\u003c\/i\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eISO P: Alloy Steel (4140 \/ 4340 Keyway Cutting)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100 - 240 m\/min\u003cbr\u003e\u003ci\u003e(330 - 785 SFM)\u003c\/i\u003e\n\u003c\/td\u003e\n\u003ctd\u003e0.12 - 0.35 mm\/rev\u003cbr\u003e\u003ci\u003e(0.005 - 0.014 IPR)\u003c\/i\u003e\n\u003c\/td\u003e\n\u003ctd\u003e0.8 - 3.0 mm\u003cbr\u003e\u003ci\u003e(0.031 - 0.118 in)\u003c\/i\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eISO P: Cast \/ Structural Steel (Rough Surface Scale)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e90 - 220 m\/min\u003cbr\u003e\u003ci\u003e(295 - 720 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\u003e0.8 - 2.8 mm\u003cbr\u003e\u003ci\u003e(0.031 - 0.110 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 Boring 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\u003eForged Steel \u0026amp; Splined Shafts:\u003c\/strong\u003e Turning components with keyways, transverse holes, or heavy mill scale without sudden edge chipping.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeavy Equipment Machining:\u003c\/strong\u003e Rough machining of forged steel gears, track rollers, and agricultural equipment shafts under high mechanical shock.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeneral CNC Shop Workhorse:\u003c\/strong\u003e Ideal setup for job shops handling variable steel stock quality where insert toughness and reliability are critical.\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 heavy engine 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\u003eAC830P\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eGU\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eISO P25-P40\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSandvik Coromant\u003c\/td\u003e\n\u003ctd\u003eGC4435 \/ GC4335\u003c\/td\u003e\n\u003ctd\u003ePM \/ PR\u003c\/td\u003e\n\u003ctd\u003eISO P25-P40\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKennametal\u003c\/td\u003e\n\u003ctd\u003eKCP30B \/ KCP40\u003c\/td\u003e\n\u003ctd\u003eMP \/ RP\u003c\/td\u003e\n\u003ctd\u003eISO P25-P40\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIscar\u003c\/td\u003e\n\u003ctd\u003eIC830 \/ IC8250\u003c\/td\u003e\n\u003ctd\u003eM3P \/ R3P\u003c\/td\u003e\n\u003ctd\u003eISO P25-P40\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKyocera\u003c\/td\u003e\n\u003ctd\u003eCA525 \/ CA530\u003c\/td\u003e\n\u003ctd\u003eMU \/ MG\u003c\/td\u003e\n\u003ctd\u003eISO P25-P40\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 Direct factory authorization channels ensure genuine Absotech® technology and batch consistency.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTechnical Machining Support:\u003c\/strong\u003e Expert advice on selecting optimal speeds, feeds, and grade selection for severe interrupted cuts.\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\u003eUnbeatable impact resistance on keyway turning\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\"We turn 4340 forged drive shafts with keyways. Other inserts chipped constantly on the impact. AC830P handles the heavy shock cuts without breaking a corner. Outstanding grade!\"\u003c\/p\u003e\n\u003csmall\u003e— Mark S., Machine Shop Owner (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\u003eExtrem zäh bei unterbrochenem Schnitt\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\"Perfekte Wendeschneidplatte für Schmiedeteile. Die GU-Geometrie bricht die Späne sehr gut und die Standzeit bei Stoßbelastung ist hervorragend.\"\u003c\/p\u003e\n\u003csmall\u003e— Thomas B., Fertigungsleiter (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\u003eEccezionale resistenza agli urti per pezzi forgiati\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\"Inserti incredibilmente robusti. Nessuna rottura del tagliente anche nelle lavorazioni pesanti con crosta di fusione.\"\u003c\/p\u003e\n\u003csmall\u003e— Marco V., Capo Officina (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断続切削での耐欠損性が非常に高く寿命が長い\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\"AC830Pは強断続加工でのチッピングが大幅に減りました。GUブレーカのチップコントロールも安定しています。\"\u003c\/p\u003e\n\u003csmall\u003e— Hiroshi M., Senior 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\u003eSolid roughing insert for heavy steel parts\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\"Great toughness for roughing cast steel housings on our CNC lathe.\"\u003c\/p\u003e\n\u003csmall\u003e— Andrew K., Lead 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: When should I choose Sumitomo AC830P over AC820P?\u003c\/div\u003e\n\u003cdiv class=\"faq-r\"\u003eA: Choose AC830P when machining under tough, heavily interrupted cutting conditions (keyways, hex stock, rough forgings) where insert chipping is the primary issue. Choose AC820P for higher speed continuous turning where wear resistance is the main priority.\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-GU?\u003c\/div\u003e\n\u003cdiv class=\"faq-r\"\u003eA: The ANSI equivalent code is TNMG 331-GU, specifying a 3\/8\" inscribed circle (i.C.), 3\/16\" thickness, and 1\/64\" (0.4mm) corner radius.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-q\"\u003eQ: Does the GU chipbreaker work for light finishing passes?\u003c\/div\u003e\n\u003cdiv class=\"faq-r\"\u003eA: The GU chipbreaker is designed for medium-to-roughing operations (a\u003csub\u003ep\u003c\/sub\u003e \u0026gt; 0.8mm). For light finishing passes (a\u003csub\u003ep\u003c\/sub\u003e \u0026lt; 0.5mm), Sumitomo FE or SU chipbreakers are recommended to prevent stringy chips.\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\u003eCatastrophic Insert Fracture\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eExcessive impact shock or feed rate too high during heavy interrupted entry.\u003c\/td\u003e\n\u003ctd\u003eSlightly reduce entry feed rate (f\u003csub\u003en\u003c\/sub\u003e) or ensure clamp rigidity; AC830P provides maximum available substrate toughness.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eThermal Cracking (Comb Cracks)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIntermittent coolant flow causing extreme temperature fluctuations on the cutting edge.\u003c\/td\u003e\n\u003ctd\u003eEnsure constant high-flow coolant coverage or switch to dry machining with air blow on severe interrupted passes.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChip Wrapping \/ Bird Nesting\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDepth of cut a\u003csub\u003ep\u003c\/sub\u003e or feed rate f\u003csub\u003en\u003c\/sub\u003e too low to engage the GU chipbreaker groove.\u003c\/td\u003e\n\u003ctd\u003eIncrease feed rate f\u003csub\u003en\u003c\/sub\u003e above 0.15 mm\/rev or increase depth of cut a\u003csub\u003ep\u003c\/sub\u003e to activate proper chip curling.\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 P (Forged Steel, Cast Steel, Heavy Interrupted Cuts):\u003c\/strong\u003e Primary application domain for AC830P grade. Utilize AC830P when higher impact resistance is needed to absorb shock loads and extend edge stability in tough industrial turning environments.\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 parameters verified against Sumitomo Electric Hardmetal Global Tooling Standards.\u003c\/div\u003e\n\u003c\/footer\u003e\n\u003c\/div\u003e","brand":"Sumitomo","offers":[{"title":"Default Title","offer_id":43396420501676,"sku":"TNMG160404N-GU AC830P","price":65.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/7328\/1708\/files\/Sumitomo_TNMG160404N-GU_AC830P_carbide_turning_insert_top_view.jpg?v=1786849079","url":"https:\/\/cnchome-beyond.com\/products\/sumitomo-tnmg160404n-gu-ac830p-carbide-insert","provider":"CNCHome-Beyond","version":"1.0","type":"link"}