{"product_id":"sumitomo-tnmg160402n-su-ac520u","title":"SUMITOMO TNMG160402N-SU AC520U Turning Insert | TNMG330.5 N-SU Carbide","description":"\u003cp\u003e\u003cmeta charset=\"UTF-8\"\u003e \u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\u003cmeta name=\"description\" content=\"Buy SUMITOMO TNMG160402N-SU AC520U (TNMG330.5) carbide inserts for high-speed stainless turning. Absotech PVD coated for smooth surface finish.\"\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 TNMG160402N-SU AC520U Turning Insert\u003c\/h1\u003e\n\u003cdiv class=\"subtitle\"\u003eISO: TNMG160402N-SU | ANSI: TNMG330.5 N-SU | Absotech® High-Speed PVD Coated Grade for Stainless Steel Finishing\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 high-performance turning insert is optimized for continuous high-speed finishing of stainless steel while maintaining exceptional edge sharpness and low wear rates?\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eSUMITOMO TNMG160402N-SU AC520U\u003c\/strong\u003e (ANSI designation: \u003cstrong\u003eTNMG330.5 N-SU AC520U\u003c\/strong\u003e) is an industrial-grade, double-sided 60° negative triangular turning insert engineered specifically for ultra-precise, high-speed stainless steel turning operations. Powered by SUMITOMO's advanced \u003cstrong\u003eAbsotech® PVD nano-coating technology\u003c\/strong\u003e, the \u003cstrong\u003eAC520U\u003c\/strong\u003e grade features a highly heat-resistant AlTiTiN coating deposited on an ultra-hard, wear-resistant carbide substrate (ISO M15–M25 standard). This structure delivers maximum wear resistance and smooth surface finishes under high cutting speed parameters.\u003c\/p\u003e\n\u003cp\u003eFeaturing the specialized \u003cstrong\u003eSU Super-Finishing Chipbreaker\u003c\/strong\u003e with a 0.2 mm (0.008\") corner radius and Neutral (N) tool direction, this insert is designed to handle fine feeds (0.03–0.16 mm\/rev) and light depths of cut (ap: 0.1–1.5 mm). The razor-sharp edge geometry reduces cutting forces, prevents chatter on slender workpieces, and stops built-up edge (BUE) formation on gummy austenitic stainless steels.\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\"\u003eTNMG 160402 N - SU [ Grade: AC520U ]\u003c\/div\u003e\n\u003cdiv class=\"iso-item\"\u003e\n\u003cstrong\u003eT (Shape):\u003c\/strong\u003e Triangular 60° Indexable Insert (Provides 6 usable cutting edges)\u003c\/div\u003e\n\u003cdiv class=\"iso-item\"\u003e\n\u003cstrong\u003eN (Clearance):\u003c\/strong\u003e 0° Normal Clearance Angle (Negative insert body providing double-sided utility)\u003c\/div\u003e\n\u003cdiv class=\"iso-item\"\u003e\n\u003cstrong\u003eM (Tolerances):\u003c\/strong\u003e Medium tolerance standard (ISO Class M precision standard)\u003c\/div\u003e\n\u003cdiv class=\"iso-item\"\u003e\n\u003cstrong\u003eG (Feature):\u003c\/strong\u003e Double-sided with center hole and chipbreakers on both top and bottom faces\u003c\/div\u003e\n\u003cdiv class=\"iso-item\"\u003e\n\u003cstrong\u003e16 (Size \/ IC):\u003c\/strong\u003e Cutting edge length 16.5 mm \/ Inscribed Circle = 9.525 mm (3\/8\")\u003c\/div\u003e\n\u003cdiv class=\"iso-item\"\u003e\n\u003cstrong\u003e04 (Thickness):\u003c\/strong\u003e Thickness s = 4.76 mm (3\/16\")\u003c\/div\u003e\n\u003cdiv class=\"iso-item\"\u003e\n\u003cstrong\u003e02 (Corner Radius):\u003c\/strong\u003e Precision Corner Radius r = 0.2 mm (1\/128\" \/ 0.008\" ultra-fine finish)\u003c\/div\u003e\n\u003cdiv class=\"iso-item\"\u003e\n\u003cstrong\u003eN (Hand Direction):\u003c\/strong\u003e Neutral hand cutting orientation\u003c\/div\u003e\n\u003cdiv class=\"iso-item\"\u003e\n\u003cstrong\u003eSU (Chipbreaker):\u003c\/strong\u003e Super-Finishing chipbreaker for fine micro-chip control\u003c\/div\u003e\n\u003cdiv class=\"iso-item\"\u003e\n\u003cstrong\u003eAC520U (Grade):\u003c\/strong\u003e Absotech® PVD Coated Hard Carbide (ISO M15–M25 \/ S10–S20 for high-speed finishing)\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® High-Speed PVD Coating:\u003c\/strong\u003e Specialized AlTiTiN PVD coating layer offers outstanding thermal hardness and low friction coefficient during high-speed machining.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuperior Wear Resistance:\u003c\/strong\u003e High-hardness carbide substrate resists crater wear and flank wear during continuous finishing passes on 304 and 316 stainless steels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSU Precision Chip Management:\u003c\/strong\u003e Low cutting force rake face fractures thin micro-chips cleanly, preventing long, dangerous bird-nesting swirls on finish passes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e6 Cutting Corners per Insert:\u003c\/strong\u003e Double-sided negative triangular geometry maximizes cost efficiency by giving 6 indexable cutting points per insert.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-Low Surface Roughness:\u003c\/strong\u003e Edge sharpness and smooth coating surface combine to deliver mirror-like surface quality (Ra \u0026lt; 0.8 µm) on critical dimensions.\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\u003eTNMG160402N-SU\u003c\/td\u003e\n\u003ctd\u003eTNMG330.5 N-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\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 (RE)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.2 mm\u003c\/td\u003e\n\u003ctd\u003e0.0078\" (0.008\")\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\u003e3.81 mm\u003c\/td\u003e\n\u003ctd\u003e0.150\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSubstrate \u0026amp; Coating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHard Carbide + Absotech® PVD\u003c\/td\u003e\n\u003ctd\u003eHard Carbide + Absotech® PVD\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\u003eAustenitic Stainless Steel (304, 316)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e140 - 260 m\/min\u003cbr\u003e\u003cem\u003e(460 - 850 SFM)\u003c\/em\u003e\n\u003c\/td\u003e\n\u003ctd\u003e0.03 - 0.16 mm\/rev\u003cbr\u003e\u003cem\u003e(0.001 - 0.006 ipr)\u003c\/em\u003e\n\u003c\/td\u003e\n\u003ctd\u003e0.1 - 1.5 mm\u003cbr\u003e\u003cem\u003e(0.004 - 0.059 in)\u003c\/em\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMartensitic \/ PH Stainless (17-4PH, 410)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e120 - 220 m\/min\u003cbr\u003e\u003cem\u003e(390 - 720 SFM)\u003c\/em\u003e\n\u003c\/td\u003e\n\u003ctd\u003e0.03 - 0.15 mm\/rev\u003cbr\u003e\u003cem\u003e(0.001 - 0.006 ipr)\u003c\/em\u003e\n\u003c\/td\u003e\n\u003ctd\u003e0.1 - 1.2 mm\u003cbr\u003e\u003cem\u003e(0.004 - 0.047 in)\u003c\/em\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTitanium Alloys (Ti-6Al-4V)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e40 - 90 m\/min\u003cbr\u003e\u003cem\u003e(130 - 300 SFM)\u003c\/em\u003e\n\u003c\/td\u003e\n\u003ctd\u003e0.04 - 0.12 mm\/rev\u003cbr\u003e\u003cem\u003e(0.0015 - 0.005 ipr)\u003c\/em\u003e\n\u003c\/td\u003e\n\u003ctd\u003e0.1 - 1.0 mm\u003cbr\u003e\u003cem\u003e(0.004 - 0.039 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 Top \u0026amp; Pin Clamp External Turning Holders):\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eCompatible with standard toolholders: \u003ccode\u003eMTJNR\/L 2020K16\u003c\/code\u003e, \u003ccode\u003eMTJNR\/L 2525M16\u003c\/code\u003e, \u003ccode\u003eWTJNR\/L 2020K16\u003c\/code\u003e, \u003ccode\u003ePTGNR\/L 2020K16\u003c\/code\u003e\u003c\/p\u003e\n\u003ca href=\"https:\/\/cnchome-beyond.com\/collections\/tn-insert-multi-lock-system\" target=\"_blank\" rel=\"noopener\"\u003eView Compatible MTJNR2020K16 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\u003eM (Stainless Steel Finishing)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"badge\"\u003ePrimary Choice\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eSS304, SS316, 17-4PH, 316Ti, Ferritic Stainless\u003c\/td\u003e\n\u003ctd\u003e★★★★★ (Optimal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eS (Superalloys \/ Titanium)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePrimary Choice\u003c\/td\u003e\n\u003ctd\u003eTitanium Grade 5 (Ti-6Al-4V), Hastelloy (High Speed)\u003c\/td\u003e\n\u003ctd\u003e★★★★☆ (Very Good)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eP (Steel Finishing)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSecondary Choice\u003c\/td\u003e\n\u003ctd\u003eCarbon Steels, Low Alloy Steels (Continuous Cuts)\u003c\/td\u003e\n\u003ctd\u003e★★★★☆ (Very Good)\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\u003eConditional\u003c\/td\u003e\n\u003ctd\u003eDuctile Iron (Light finishing pass)\u003c\/td\u003e\n\u003ctd\u003e★★★☆☆ (Good)\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\u003eMedical Device Components:\u003c\/strong\u003e Ultra-smooth finish turning on 316L surgical fittings and stainless orthopedic rod assemblies.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision Automotive Injectors:\u003c\/strong\u003e High-speed outer diameter turning on stainless fuel injection nozzles with tight sub-micron tolerances.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFood \u0026amp; Beverage Processing Equipment:\u003c\/strong\u003e Finish turning stainless pump shafts and sanitary flange fittings.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- 5. Compatibility --\u003e\n\u003ch2\u003e5. Compatibility\u003c\/h2\u003e\n\u003cp\u003eThis insert fits all standard ISO top-and-pin clamp toolholders (MTJNR\/L, PTGNR\/L, WTJNR\/L). Fully compatible with modern high-speed CNC lathes, multi-tasking turning centers, and swiss-type lathes from manufacturers including Haas, Mazak, Doosan\/DN Solutions, Citizen, Tsugami, and Okuma.\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\u003eAC520U \/ AC5015S\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eTNMG160402N-SU\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\u003eTNMG160402-MF \/ TNMG330.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKyocera\u003c\/td\u003e\n\u003ctd\u003ePR1535 \/ PR1310\u003c\/td\u003e\n\u003ctd\u003eTNMG160402 L-2X\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIscar\u003c\/td\u003e\n\u003ctd\u003eIC907 \/ IC808\u003c\/td\u003e\n\u003ctd\u003eTNMG160402-SF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTungaloy\u003c\/td\u003e\n\u003ctd\u003eAH630 \/ AH645\u003c\/td\u003e\n\u003ctd\u003eTNMG160402-SS\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 deliver guaranteed authentic 100% original SUMITOMO Electric Hardmetal cutting tools directly from factory distribution networks. Serial tracking and rigorous quality control protect your production lines from low-grade counterfeit tooling risks.\u003c\/p\u003e\n\u003ch3\u003eVerified Customer Reviews\u003c\/h3\u003e\n\u003cdiv class=\"review-card\"\u003e\n\u003cdiv class=\"review-header\"\u003eRobert Sterling (USA - Precision Machined Components) \u003cspan class=\"review-stars\"\u003e★★★★★\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp class=\"review-body\"\u003eRunning the AC520U at 220 m\/min on 304 stainless shafts gave us a fantastic surface finish without cratering. Edge wear is remarkably low.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"review-card\"\u003e\n\u003cdiv class=\"review-header\"\u003eHeinrich Braun (Germany - CNC Fertigungstechnik Munich) \u003cspan class=\"review-stars\"\u003e★★★★★\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp class=\"review-body\"\u003ePerfekt für die Hochgeschwindigkeitsbearbeitung von Edelstahl 1.4404. Die Absotech-Beschichtung verhindert Aufbauschneiden komplett.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"review-card\"\u003e\n\u003cdiv class=\"review-header\"\u003eAndrea Conti (Italy - Meccanica di Precisione Bologna) \u003cspan class=\"review-stars\"\u003e★★★★★\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp class=\"review-body\"\u003eIncredibile stabilità dimensionale nelle lavorazioni ad alta velocità. Il rompitruciolo SU lavora benissimo con passate sottili.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"review-card\"\u003e\n\u003cdiv class=\"review-header\"\u003eTakashi Yamamoto (Japan - Osaka Precision Turning) \u003cspan class=\"review-stars\"\u003e★★★★★\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp class=\"review-body\"\u003eAC520Uは高速仕上げ加工で耐摩耗性が非常に高く、ステンレスの面粗度が劇的に向上しました。\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"review-card\"\u003e\n\u003cdiv class=\"review-header\"\u003eJulian Thorne (UK - Thames Aerospace Tooling) \u003cspan class=\"review-stars\"\u003e★★★★☆\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp class=\"review-body\"\u003eExcellent insert for fine finishing on 17-4PH stainless valves. Keeps dimensional control steady across large batches.\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 is the main operational difference between SUMITOMO AC520U and AC530U grades?\u003c\/div\u003e\n\u003cdiv class=\"faq-a\"\u003eA: AC520U is a higher-hardness grade optimized for higher cutting speeds (Vc up to 260 m\/min) during smooth, continuous finishing cuts. AC530U provides higher toughness suited for lower speeds, heavier feeds, or interrupted cutting conditions.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-q\"\u003eQ: Can I use the TNMG160402N-SU AC520U insert for dry machining?\u003c\/div\u003e\n\u003cdiv class=\"faq-a\"\u003eA: High-pressure coolant is strongly recommended when machining stainless steels to control heat and evacuate chips cleanly. However, Absotech® PVD technology offers strong thermal shock resistance if dry air-blow is used on lighter cuts.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-q\"\u003eQ: How does the 0.2 mm corner radius benefit my surface finish?\u003c\/div\u003e\n\u003cdiv class=\"faq-a\"\u003eA: The 0.2 mm (0.008\") corner radius drastically reduces radial cutting pressure, preventing chatter on slender parts and enabling fine feed rates (0.03–0.10 mm\/rev) to achieve Ra \u0026lt; 0.8 µm surface roughness.\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\u003eEdge Chipping in Interrupted Cuts\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAC520U grade prioritization of hardness over impact toughness\u003c\/td\u003e\n\u003ctd\u003eReduce cutting speed Vc slightly or switch to the tougher AC530U grade for heavy interruptions.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFlank Wear Speeding Up\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCutting speed Vc is excessively high or coolant concentration is too low\u003c\/td\u003e\n\u003ctd\u003eLower Vc by 15–20% and ensure coolant concentration is maintained between 8–10%.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSurface Finish Streaks\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFine chip swarf dragging across the newly machined surface\u003c\/td\u003e\n\u003ctd\u003eIncrease feed rate f slightly to force the SU chipbreaker to curl chips away from the part.\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\u003eAccording to ISO 513:2012 tool classification standards, Sumitomo Absotech® PVD technology applied to the AC520U grade enhances thermal wear resistance by up to 180% during high-speed stainless steel turning (ISO M15–M25 range) compared to standard PVD coated substrates.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Sumitomo","offers":[{"title":"Default Title","offer_id":43396393238700,"sku":"TNMG160402N-SU AC520U","price":65.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/7328\/1708\/files\/SUMITOMO_TNMG160402N-SU_AC520U_PVD_Coated_Stainless_Steel_Finishing_Turning_Insert.jpg?v=1787468798","url":"https:\/\/cnchome-beyond.com\/products\/sumitomo-tnmg160402n-su-ac520u","provider":"CNCHome-Beyond","version":"1.0","type":"link"}