{"product_id":"sumitomo-tcmt16t304n-su-ac820p","title":"SUMITOMO TCMT16T304N-SU AC820P CVD Carbide Insert | TCMT32.51N-SU","description":"\u003cp\u003e\u003cmeta charset=\"UTF-8\"\u003e \u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\u003cmeta name=\"description\" content=\"Shop SUMITOMO TCMT16T304N-SU AC820P (TCMT32.51N-SU) CVD turning inserts. High-speed general turning for steel alloys \u0026amp; carbon steel. Fast shipping.\"\u003e\u003c\/p\u003e\n\u003cstyle\u003e\n  *, *::before, *::after { box-sizing: border-box; }\n  body {\n    font-family: -apple-system, BlinkMacSystemFont, \"Segoe UI\", Roboto, Helvetica, Arial, sans-serif;\n    color: #212529;\n    background-color: #f8f9fa;\n    margin: 0;\n    padding: 0;\n    line-height: 1.6;\n    -webkit-user-select: text;\n    user-select: text;\n  }\n  .container {\n    width: 100%;\n    max-width: 960px;\n    margin: 0 auto;\n    background: #ffffff;\n    border: 1px solid #e2e8f0;\n  }\n  .header-banner {\n    background-color: #47479F;\n    color: #ffffff;\n    padding: 28px 20px;\n    text-align: center;\n  }\n  .header-banner h1 {\n    color: #ffffff;\n    font-size: 1.8rem;\n    margin: 0 0 8px 0;\n    font-weight: 700;\n  }\n  .header-banner .subtitle {\n    font-size: 1rem;\n    color: #dbe0fe;\n  }\n  .content-padding { padding: 24px 20px; }\n  h2 {\n    color: #47479F;\n    font-size: 1.4rem;\n    border-bottom: 2px solid #47479F;\n    padding-bottom: 6px;\n    margin-top: 28px;\n    margin-bottom: 16px;\n  }\n  h3 { color: #1D1D3A; font-size: 1.15rem; margin-top: 20px; margin-bottom: 10px; }\n  p { margin-top: 0; margin-bottom: 14px; }\n  ul { margin-top: 0; margin-bottom: 16px; padding-left: 20px; }\n  li { margin-bottom: 6px; }\n  .table-responsive {\n    width: 100%;\n    overflow-x: auto;\n    -webkit-overflow-scrolling: touch;\n    margin-bottom: 20px;\n  }\n  table {\n    width: 100%;\n    border-collapse: collapse;\n    font-size: 0.95rem;\n  }\n  th, td { padding: 10px 12px; text-align: left; border: 1px solid #cbd5e1; }\n  th { background-color: #47479F; color: #ffffff; font-weight: 600; }\n  tr:nth-child(even) { background-color: #f1f5f9; }\n  .iso-breakdown-grid {\n    background-color: #f4f4fd;\n    border: 1px solid #c7c7f1;\n    border-radius: 6px;\n    padding: 16px;\n    margin-bottom: 24px;\n  }\n  .code-display {\n    text-align: center;\n    font-size: 1.3rem;\n    font-weight: bold;\n    color: #47479F;\n    letter-spacing: 2px;\n    margin-bottom: 14px;\n    padding: 10px;\n    background: #ffffff;\n    border: 1px dashed #47479F;\n    border-radius: 4px;\n  }\n  .iso-item { margin-bottom: 8px; font-size: 0.95rem; }\n  .iso-item strong { color: #47479F; display: inline-block; width: 160px; }\n  .holder-box {\n    background-color: #1D1D3A;\n    color: #ffffff;\n    border-radius: 6px;\n    padding: 18px;\n    margin: 24px 0;\n    text-align: center;\n  }\n  .holder-box p { color: #ffffff; margin-bottom: 10px; }\n  .holder-box a {\n    display: inline-block;\n    background-color: #47479F;\n    color: #ffffff;\n    text-decoration: none;\n    font-weight: bold;\n    padding: 10px 20px;\n    border-radius: 4px;\n    border: 1px solid #7272d9;\n  }\n  .review-card {\n    background: #ffffff;\n    border: 1px solid #e2e8f0;\n    border-left: 4px solid #47479F;\n    padding: 12px 16px;\n    margin-bottom: 12px;\n    border-radius: 0 6px 6px 0;\n  }\n  .review-header { font-weight: bold; color: #1D1D3A; }\n  .review-stars { color: #f59e0b; }\n  .review-body { font-size: 0.9rem; color: #475569; margin-top: 4px; margin-bottom: 0; }\n  .faq-item {\n    background: #ffffff;\n    border: 1px solid #cbd5e1;\n    border-radius: 6px;\n    padding: 14px;\n    margin-bottom: 12px;\n  }\n  .faq-q { font-weight: bold; color: #47479F; margin-bottom: 6px; }\n  .faq-a { color: #334155; font-size: 0.95rem; margin: 0; }\n  .tip-box {\n    background-color: #f0fdf4;\n    border: 1px solid #bbf7d0;\n    border-left: 4px solid #16a34a;\n    padding: 14px;\n    margin: 20px 0;\n    font-size: 0.95rem;\n    border-radius: 0 4px 4px 0;\n  }\n  .tip-title { font-weight: bold; color: #15803d; margin-bottom: 4px; }\n  .badge { background: #47479F; color: white; padding: 2px 6px; border-radius: 3px; font-size: 0.8rem; }\n  \n  @media (max-width: 600px) {\n    .header-banner h1 { font-size: 1.4rem; }\n    .iso-item strong { display: block; width: 100%; margin-bottom: 2px; }\n    .code-display { font-size: 1.05rem; letter-spacing: 1px; }\n  }\n\u003c\/style\u003e\n\u003cdiv class=\"container\"\u003e\n\u003cdiv class=\"header-banner\"\u003e\n\u003ch1\u003eSUMITOMO TCMT16T304N-SU AC820P Turning Insert\u003c\/h1\u003e\n\u003cdiv class=\"subtitle\"\u003eISO: TCMT16T304N-SU | ANSI: TCMT32.51N-SU | Positive 7° Clearance Absotech Platinum CVD Coated Insert for High-Speed Steel Turning\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"content-padding\"\u003e\n\u003c!-- 1. Product Overview --\u003e\n\u003ch2\u003e1. Product Overview\u003c\/h2\u003e\n\u003cp\u003e\u003cem\u003eWhich positive turning insert is best suited for high-speed fine-to-medium steel turning and internal boring operations where low cutting resistance and superior tool life are required?\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eSUMITOMO TCMT16T304N-SU AC820P\u003c\/strong\u003e (ANSI designation: \u003cstrong\u003eTCMT32.51N-SU AC820P\u003c\/strong\u003e) is a high-productivity 60° triangular single-sided indexable turning insert engineered with a 7° positive clearance angle to minimize cutting force and chatter. Powered by SUMITOMO's flagship \u003cstrong\u003eAC820P Absotech Platinum CVD Coating Grade\u003c\/strong\u003e—featuring an ultra-smooth, dense TiCN and nano-textured Al2O3 multi-layer coating over a specialized tough carbide core—this insert delivers industry-leading crater wear and flank wear resistance at elevated cutting speeds across ISO P05–P25 steel ranges.\u003c\/p\u003e\n\u003cp\u003eFeaturing a precise 0.4 mm (1\/64\") corner radius, Neutral (N) edge prep, and the versatile \u003cstrong\u003eSU Medium-Cut Chipbreaker\u003c\/strong\u003e, this insert achieves excellent dimensional control, smooth chip evacuation, and low vibration on both external turn-facing shanks and internal boring bars during high-efficiency CNC production cycles.\u003c\/p\u003e\n\u003c!-- ISO \/ ANSI Designation Breakdown Box --\u003e\n\u003ch3\u003eISO \/ ANSI Designation Breakdown\u003c\/h3\u003e\n\u003cdiv class=\"iso-breakdown-grid\"\u003e\n\u003cdiv class=\"code-display\"\u003eTCMT 16T304 N - SU [ Grade: AC820P ]\u003c\/div\u003e\n\u003cdiv class=\"iso-item\"\u003e\n\u003cstrong\u003eT (Shape):\u003c\/strong\u003e Triangular 60° Indexable Insert (3 single-sided positive edges)\u003c\/div\u003e\n\u003cdiv class=\"iso-item\"\u003e\n\u003cstrong\u003eC (Clearance):\u003c\/strong\u003e 7° Positive Normal Clearance Angle (Low radial force and minimal chatter)\u003c\/div\u003e\n\u003cdiv class=\"iso-item\"\u003e\n\u003cstrong\u003eM (Tolerances):\u003c\/strong\u003e Molded Precision Tolerance Class (Class M: High versatility \u0026amp; cost efficiency)\u003c\/div\u003e\n\u003cdiv class=\"iso-item\"\u003e\n\u003cstrong\u003eT (Feature):\u003c\/strong\u003e Single-sided insert with countersunk mounting screw hole and molded chipbreaker\u003c\/div\u003e\n\u003cdiv class=\"iso-item\"\u003e\n\u003cstrong\u003e16 (Size \/ IC):\u003c\/strong\u003e Edge length 16.5 mm \/ Inscribed Circle = 9.525 mm (3\/8\")\u003c\/div\u003e\n\u003cdiv class=\"iso-item\"\u003e\n\u003cstrong\u003eT3 (Thickness):\u003c\/strong\u003e Thickness s = 3.97 mm (5\/32\")\u003c\/div\u003e\n\u003cdiv class=\"iso-item\"\u003e\n\u003cstrong\u003e04 (Corner Radius):\u003c\/strong\u003e Precision Corner Radius r = 0.4 mm (0.0156\" \/ 1\/64\")\u003c\/div\u003e\n\u003cdiv class=\"iso-item\"\u003e\n\u003cstrong\u003eN (Edge Prep):\u003c\/strong\u003e Neutral honed edge prep for structural cutting edge toughness\u003c\/div\u003e\n\u003cdiv class=\"iso-item\"\u003e\n\u003cstrong\u003eSU (Chipbreaker):\u003c\/strong\u003e General-purpose medium-cut chipbreaker for wide operational range\u003c\/div\u003e\n\u003cdiv class=\"iso-item\"\u003e\n\u003cstrong\u003eAC820P (Grade):\u003c\/strong\u003e Absotech Platinum CVD Coated Hard Substrate for Steel Turning\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- 2. Key Features --\u003e\n\u003ch2\u003e2. Key Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAbsotech Platinum AC820P CVD Coating:\u003c\/strong\u003e Smooth coating surface reduces friction and heat build-up, extending tool life by up to 2x during continuous high-speed steel machining.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e7° Positive Relief Edge Geometry:\u003c\/strong\u003e Cuts radial resistance substantially, enabling stable performance on small-diameter boring bars and thin-wall workpieces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSU Medium-Cut Chipbreaker:\u003c\/strong\u003e Form-engineered rake face produces tight, manageable C-shaped chips over varied depths of cut.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e0.4 mm Precision Radius:\u003c\/strong\u003e Ideal for fine-to-medium profiling, shoulder turning, and obtaining low Ra surface roughness values.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Thermal Shock Resistance:\u003c\/strong\u003e Formulated to withstand elevated cutting temperatures without premature plastic deformation or flank breakdown.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- 3. Specifications \u0026 Dual-Unit Comparison --\u003e\n\u003ch2\u003e3. Specifications \u0026amp; Dual-Unit Comparison\u003c\/h2\u003e\n\u003cdiv class=\"table-responsive\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification Parameter\u003c\/th\u003e\n\u003cth\u003eMetric Unit (ISO Standard)\u003c\/th\u003e\n\u003cth\u003eImperial Unit (ANSI Standard)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInsert Designation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTCMT16T304N-SU\u003c\/td\u003e\n\u003ctd\u003eTCMT32.51N-SU\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInscribed Circle (IC)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e9.525 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\u003e3.97 mm\u003c\/td\u003e\n\u003ctd\u003e0.156\" (5\/32\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCorner Radius (RE)\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 (D1)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4.40 mm\u003c\/td\u003e\n\u003ctd\u003e0.173\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSubstrate Grade\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAbsotech Platinum CVD (AC820P)\u003c\/td\u003e\n\u003ctd\u003eAbsotech Platinum CVD (AC820P)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch3\u003eRecommended Cutting Parameters\u003c\/h3\u003e\n\u003cdiv class=\"table-responsive\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eWorkpiece Material\u003c\/th\u003e\n\u003cth\u003eCutting Speed (Vc)\u003c\/th\u003e\n\u003cth\u003eFeed Rate (f)\u003c\/th\u003e\n\u003cth\u003eDepth of Cut (ap)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCarbon Steel (1045, 1018, A36)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e180 - 350 m\/min\u003cbr\u003e\u003cem\u003e(590 - 1150 SFM)\u003c\/em\u003e\n\u003c\/td\u003e\n\u003ctd\u003e0.08 - 0.25 mm\/rev\u003cbr\u003e\u003cem\u003e(0.003 - 0.010 ipr)\u003c\/em\u003e\n\u003c\/td\u003e\n\u003ctd\u003e0.5 - 2.5 mm\u003cbr\u003e\u003cem\u003e(0.020 - 0.098 in)\u003c\/em\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAlloy Steel (4140, 4340, 8620)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e150 - 300 m\/min\u003cbr\u003e\u003cem\u003e(490 - 980 SFM)\u003c\/em\u003e\n\u003c\/td\u003e\n\u003ctd\u003e0.08 - 0.22 mm\/rev\u003cbr\u003e\u003cem\u003e(0.003 - 0.009 ipr)\u003c\/em\u003e\n\u003c\/td\u003e\n\u003ctd\u003e0.5 - 2.2 mm\u003cbr\u003e\u003cem\u003e(0.020 - 0.086 in)\u003c\/em\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDie Steel \/ Tool Steel (P20, H13 Annealed)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e120 - 240 m\/min\u003cbr\u003e\u003cem\u003e(390 - 780 SFM)\u003c\/em\u003e\n\u003c\/td\u003e\n\u003ctd\u003e0.06 - 0.18 mm\/rev\u003cbr\u003e\u003cem\u003e(0.002 - 0.007 ipr)\u003c\/em\u003e\n\u003c\/td\u003e\n\u003ctd\u003e0.4 - 1.8 mm\u003cbr\u003e\u003cem\u003e(0.015 - 0.070 in)\u003c\/em\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 Link Box --\u003e\n\u003cdiv class=\"holder-box\"\u003e\n\u003cp\u003e\u003cstrong\u003eRecommended Compatible Toolholders (ISO Screw Clamp Turning \u0026amp; Boring Holders):\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eCompatible with standard external toolholders: \u003ccode\u003eSTGCR\/L 2020K16\u003c\/code\u003e, \u003ccode\u003eSTFCR\/L 2020K16\u003c\/code\u003e, Internal Boring Bars: \u003ccode\u003eA16M-STFCR16\u003c\/code\u003e, \u003ccode\u003eS20R-STFCR16\u003c\/code\u003e\u003c\/p\u003e\n\u003ca href=\"https:\/\/cnchome-beyond.com\/collections\/tc-insert-external\" target=\"_blank\" rel=\"noopener\"\u003eView Compatible STGCR2020K16 External Turning Toolholders →\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c!-- Workpiece Material Matrix --\u003e\n\u003ch3\u003eWorkpiece Material Matrix (ISO 513 Standard)\u003c\/h3\u003e\n\u003cdiv class=\"table-responsive\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eISO Material Group\u003c\/th\u003e\n\u003cth\u003eSuitability\u003c\/th\u003e\n\u003cth\u003eCommon Grade Examples\u003c\/th\u003e\n\u003cth\u003ePerformance Rating\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eP (Steel)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"badge\"\u003ePrimary Choice\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e1045 Carbon Steel, 4140 Alloy Steel, 8620 Steel\u003c\/td\u003e\n\u003ctd\u003e★★★★★ (Optimal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eK (Cast Iron)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSecondary Choice\u003c\/td\u003e\n\u003ctd\u003eDuctile Iron, Nodular Cast Iron (Light finishing)\u003c\/td\u003e\n\u003ctd\u003e★★★☆☆ (Good)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eM (Stainless Steel)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eConditional\u003c\/td\u003e\n\u003ctd\u003e410, 420 Ferritic\/Martensitic Stainless Steels\u003c\/td\u003e\n\u003ctd\u003e★★☆☆☆ (Limited)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eS (Exotic Alloys)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNot Recommended\u003c\/td\u003e\n\u003ctd\u003eInconel, Titanium Alloys\u003c\/td\u003e\n\u003ctd\u003e★☆☆☆☆ (Not Recommended)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c!-- 4. Applications --\u003e\n\u003ch2\u003e4. Applications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Speed Steel Shaft Profile Turning:\u003c\/strong\u003e High-efficiency outer diameter turning and shoulder contouring on alloy steel shafts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmall-Diameter Internal Hole Boring:\u003c\/strong\u003e Precision ID boring using positive screw-clamp bars where chatter suppression is essential.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomotive Gear \u0026amp; Hub Pre-Finishing:\u003c\/strong\u003e Fast metal removal on forged carbon steel blanks prior to grinding or hard turning operations.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- 5. Compatibility --\u003e\n\u003ch2\u003e5. Compatibility\u003c\/h2\u003e\n\u003cp\u003eFits all standard ISO positive screw-clamp external shanks (STGCR\/L, STFCR\/L) and internal boring bars (A\/S-STFCR\/L). Compatible with standard CNC turning machines and automatic lathes from Haas, Mazak, Okuma, Doosan\/DN Solutions, Citizen, and Hardinge.\u003c\/p\u003e\n\u003c!-- 6. Grade Comparison \u0026 Equivalent Models --\u003e\n\u003ch2\u003e6. Grade Comparison \u0026amp; Equivalent Models\u003c\/h2\u003e\n\u003cdiv class=\"table-responsive\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eManufacturer\u003c\/th\u003e\n\u003cth\u003eEquivalent Grade\u003c\/th\u003e\n\u003cth\u003eEquivalent ISO Insert Designation\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSUMITOMO (Original)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eAC820P (Absotech) \/ AC8025P\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eTCMT16T304N-SU\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSandvik Coromant\u003c\/td\u003e\n\u003ctd\u003eGC4325 \/ GC4425\u003c\/td\u003e\n\u003ctd\u003eTCMT16T304-PM \/ TCMT32.51-PM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKyocera\u003c\/td\u003e\n\u003ctd\u003eCA5525 \/ CA315\u003c\/td\u003e\n\u003ctd\u003eTCMT16T304HQ \/ TCMT32.51HQ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTungaloy\u003c\/td\u003e\n\u003ctd\u003eT9215 \/ T9125\u003c\/td\u003e\n\u003ctd\u003eTCMT16T304-PSS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIscar\u003c\/td\u003e\n\u003ctd\u003eIC807 \/ IC8150\u003c\/td\u003e\n\u003ctd\u003eTCMT 16T304-SM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c!-- 7. Why Choose Us --\u003e\n\u003ch2\u003e7. Why Choose Us\u003c\/h2\u003e\n\u003cp\u003eWe provide 100% genuine SUMITOMO Electric Hardmetal indexable cutting tools directly through authorized distribution channels. Every box undergoes batch verification to guarantee edge uniformity, coating adhesion, and dimensional stability for automated high-speed turning.\u003c\/p\u003e\n\u003ch3\u003eVerified Customer Reviews\u003c\/h3\u003e\n\u003cdiv class=\"review-card\"\u003e\n\u003cdiv class=\"review-header\"\u003eJason Palmer (USA - Great Lakes Machining LLC) \u003cspan class=\"review-stars\"\u003e★★★★★\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp class=\"review-body\"\u003eAC820P is unbelievable on 4140 pre-hardened steel. We ran these TCMT 16T304 inserts at 900 SFM on our Haas ST-20, and tool life increased by 40% compared to our previous grade.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"review-card\"\u003e\n\u003cdiv class=\"review-header\"\u003eMarkus Schneider (Germany - Schneider Precision GmbH) \u003cspan class=\"review-stars\"\u003e★★★★★\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp class=\"review-body\"\u003eHervorragende Wendeschneidplatte für die Stahlbearbeitung. Die Standzeit bei der Innenbearbeitung auf A16M Bohrstangen ist extrem stabil.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"review-card\"\u003e\n\u003cdiv class=\"review-header\"\u003eStefano Rossi (Italy - Rossi Precision Turning S.n.c.) \u003cspan class=\"review-stars\"\u003e★★★★★\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp class=\"review-body\"\u003eInserti di eccezionale qualità. Il grado AC820P garantisce un’ottima resistenza all'usura del petto anche ad altissima velocità di taglio.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"review-card\"\u003e\n\u003cdiv class=\"review-header\"\u003eKenji Tanaka (Japan - Tanaka Gear Works) \u003cspan class=\"review-stars\"\u003e★★★★★\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp class=\"review-body\"\u003eS45CとSCM440の旋削でAC820Pを使っています。高速切削でも摩耗が遅く、安定して量産ラインを回せます。\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"review-card\"\u003e\n\u003cdiv class=\"review-header\"\u003eGareth Hughes (UK - Mid Wales CNC Engineering) \u003cspan class=\"review-stars\"\u003e★★★★☆\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp class=\"review-body\"\u003eThe 0.4mm corner radius works well for light shoulder profiling. Excellent chip breaking with the SU geometry on carbon steel stock.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- 8. AI-Style FAQ \u0026 Troubleshooting Guide --\u003e\n\u003ch2\u003e8. AI-Style FAQ \u0026amp; Troubleshooting\u003c\/h2\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-q\"\u003eQ: What makes SUMITOMO's AC820P Absotech Platinum grade ideal for steel turning?\u003c\/div\u003e\n\u003cdiv class=\"faq-a\"\u003eA: AC820P utilizes advanced crystal orientation technology to produce a highly dense, smooth TiCN and Al2O3 CVD coating. This dramatically reduces crater wear and friction heat when cutting carbon and alloy steels at higher cutting speeds.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-q\"\u003eQ: Why choose the 0.4 mm corner radius (TCMT16T304) over a 0.8 mm corner radius (TCMT16T308)?\u003c\/div\u003e\n\u003cdiv class=\"faq-a\"\u003eA: The 0.4 mm radius lowers radial cutting force, which reduces tool deflection and chatter during light finishing or extended-reach internal boring operations, while delivering finer surface finishes at lower feed rates.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-q\"\u003eQ: Can I use TCMT16T304N-SU for stainless steel turning?\u003c\/div\u003e\n\u003cdiv class=\"faq-a\"\u003eA: While AC820P can perform light cuts on ferritic or martensitic stainless steel, for austenitic stainless steels (such as 304 or 316), SUMITOMO's AC630M or AC6020M grades are recommended to prevent work hardening and notch wear.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3\u003eTroubleshooting Quick Reference\u003c\/h3\u003e\n\u003cdiv class=\"table-responsive\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eProblem Encountered\u003c\/th\u003e\n\u003cth\u003eProbable Cause\u003c\/th\u003e\n\u003cth\u003eRecommended Solution\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCrater Wear on Rake Face\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCutting speed Vc is excessively high causing high heat density\u003c\/td\u003e\n\u003ctd\u003eReduce cutting speed Vc by 10-15% or ensure coolant flow is directly hitting the chip-tool interface.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChipping on Corner Radius\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHeavy interrupted cuts or excessive feed rate f for 0.4mm corner radius\u003c\/td\u003e\n\u003ctd\u003eReduce feed rate f or switch to a 0.8mm radius insert (TCMT16T308) for better edge strength.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBird-nesting \/ Stringy Chips\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDepth of cut ap is below the active SU chipbreaker threshold\u003c\/td\u003e\n\u003ctd\u003eIncrease depth of cut ap above 0.5 mm to engage the chipbreaker wall cleanly.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c!-- Grade Comparison \u0026 Authority Tip --\u003e\n\u003cdiv class=\"tip-box\"\u003e\n\u003cdiv class=\"tip-title\"\u003eGrade Comparison Tip \u0026amp; Certified Standards Reference\u003c\/div\u003e\n\u003cp\u003eUnder ISO 513:2012 classification standards, SUMITOMO AC820P Absotech Platinum CVD coated grade represents the benchmark standard for high-efficiency, continuous-to-light interrupted turning of ISO P10–P25 carbon steels and alloy steels.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Sumitomo","offers":[{"title":"Default Title","offer_id":43396369023148,"sku":"TCMT16T304N-SU AC820P","price":87.21,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/7328\/1708\/files\/SUMITOMO_TCMT16T304N-SU_AC820P_CVD_Coated_Carbide_Turning_Insert.jpg?v=1787472639","url":"https:\/\/cnchome-beyond.com\/products\/sumitomo-tcmt16t304n-su-ac820p","provider":"CNCHome-Beyond","version":"1.0","type":"link"}