{"product_id":"sumitomo-tnmg160404n-ge-ac820p","title":"SUMITOMO TNMG160404N-GE AC820P Carbide Insert","description":"\u003cdiv style=\"font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif; color: #333333; max-width: 1200px; margin: 0 auto; padding: 15px; line-height: 1.6;\"\u003e\n\u003c!-- Hero Title (H1) --\u003e\n\u003cdiv style=\"background-color: #47479f; color: #ffffff; padding: 20px; border-radius: 6px; text-align: center; margin-bottom: 25px;\"\u003e\n\u003ch1 style=\"margin: 0; font-size: 26px; font-weight: bold; color: #ffffff;\"\u003eSUMITOMO TNMG160404N-GE AC820P Carbide Turning Insert (TNMG 331-GE)\u003c\/h1\u003e\n\u003cp style=\"margin: 5px 0 0 0; font-size: 14px; opacity: 0.9; color: #ffffff;\"\u003eIndustrial-Grade ISO\/ANSI Standard Negative Triangular CVD Coated Insert for Steel Machining\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- 1. Product Overview (H2 - Natural AI Prompted Language) --\u003e\n\u003cdiv style=\"margin-bottom: 30px;\"\u003e\n\u003ch2 style=\"color: #47479f; border-bottom: 2px solid #47479F; padding-bottom: 8px; font-size: 20px;\"\u003eWhich Carbide Insert Is Best for High-Speed General Steel Turning?\u003c\/h2\u003e\n\u003cp style=\"font-size: 15px;\"\u003eThe \u003cstrong\u003eSUMITOMO TNMG160404N-GE AC820P\u003c\/strong\u003e (ANSI counterpart: \u003cstrong\u003eTNMG 331-GE\u003c\/strong\u003e) is engineered specifically to maximize throughput and tool life in high-speed, general-purpose steel turning applications. Powered by Sumitomo’s proprietary \u003cstrong\u003eAbsotech Platinum CVD coating technology\u003c\/strong\u003e, the \u003cstrong\u003eAC820P grade\u003c\/strong\u003e features an ultra-thick, highly crystalline Al2O3 layer that offers exceptional heat insulation and crater wear resistance at elevated cutting speeds.\u003c\/p\u003e\n\u003cp style=\"font-size: 15px;\"\u003eCombined with the double-sided \u003cstrong\u003eGE chipbreaker geometry\u003c\/strong\u003e, this insert provides reliable, force-reducing chip control across a wide spectrum of feed rates during light-to-medium roughing and finishing on carbon, alloy, and tool steels.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- 2. Key Features --\u003e\n\u003cdiv style=\"margin-bottom: 30px;\"\u003e\n\u003ch2 style=\"color: #47479f; border-bottom: 2px solid #47479F; padding-bottom: 8px; font-size: 20px;\"\u003eKey Features \u0026amp; Performance Advantages\u003c\/h2\u003e\n\u003cul style=\"padding-left: 20px; font-size: 15px;\"\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e\n\u003cstrong\u003eAbsotech Platinum CVD Coating:\u003c\/strong\u003e Ultra-dense TiCN + Al2O3 multi-layer architecture delivers extreme crater wear resistance and thermal shock stability.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e\n\u003cstrong\u003eGE Chipbreaker Geometry:\u003c\/strong\u003e General-purpose 3D rake angle design engineered for low cutting resistance and optimal chip evacuation across medium feed ranges.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e\n\u003cstrong\u003e6 Cutting Edges per Insert:\u003c\/strong\u003e Double-sided 60° triangular negative geometry optimizes cost efficiency per edge.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e\n\u003cstrong\u003eHigh Speed \u0026amp; Efficiency:\u003c\/strong\u003e Maintains dimensional stability and smooth surface finishes under high cutting speeds (Vc up to 350 m\/min).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c!-- ISO \/ ANSI Code Breakdown Box --\u003e\n\u003cdiv style=\"margin-bottom: 30px;\"\u003e\n\u003ch2 style=\"color: #47479f; border-bottom: 2px solid #47479F; padding-bottom: 8px; font-size: 20px;\"\u003eISO \/ ANSI Standard Code Breakdown\u003c\/h2\u003e\n\u003cdiv style=\"border: 2px dashed #47479F; background-color: #f8f8fc; padding: 15px; border-radius: 6px; font-size: 14px;\"\u003e\n\u003cp style=\"margin-top: 0; font-weight: bold; font-size: 15px; color: #47479f;\"\u003eISO Code: TNMG 160404 N - GE | ANSI Code: TNMG 331 - GE\u003c\/p\u003e\n\u003cul style=\"list-style-type: none; padding-left: 0; margin-bottom: 0;\"\u003e\n\u003cli style=\"padding: 4px 0; border-bottom: 1px dotted #dddddd;\"\u003e\n\u003cstrong\u003eT:\u003c\/strong\u003e Insert Shape — 60° Equilateral Triangle\u003c\/li\u003e\n\u003cli style=\"padding: 4px 0; border-bottom: 1px dotted #dddddd;\"\u003e\n\u003cstrong\u003eN:\u003c\/strong\u003e Clearance Angle — 0° Negative Relief\u003c\/li\u003e\n\u003cli style=\"padding: 4px 0; border-bottom: 1px dotted #dddddd;\"\u003e\n\u003cstrong\u003eM:\u003c\/strong\u003e Tolerances — Precision Molded Class M\u003c\/li\u003e\n\u003cli style=\"padding: 4px 0; border-bottom: 1px dotted #dddddd;\"\u003e\n\u003cstrong\u003eG:\u003c\/strong\u003e Hole \/ Chipbreaker — Double-sided with central fixing hole\u003c\/li\u003e\n\u003cli style=\"padding: 4px 0; border-bottom: 1px dotted #dddddd;\"\u003e\n\u003cstrong\u003e16 \/ 3:\u003c\/strong\u003e Cutting Edge Length — 16.5 mm (ISO) \/ 3\/8\" Inscribed Circle (ANSI)\u003c\/li\u003e\n\u003cli style=\"padding: 4px 0; border-bottom: 1px dotted #dddddd;\"\u003e\n\u003cstrong\u003e04 \/ 3:\u003c\/strong\u003e Thickness — 4.76 mm (ISO) \/ 3\/16\" Thickness (ANSI)\u003c\/li\u003e\n\u003cli style=\"padding: 4px 0; border-bottom: 1px dotted #dddddd;\"\u003e\n\u003cstrong\u003e04 \/ 1:\u003c\/strong\u003e Corner Radius — R0.4 mm (ISO) \/ 0.016\" Radius (ANSI 1)\u003c\/li\u003e\n\u003cli style=\"padding: 4px 0; border-bottom: 1px dotted #dddddd;\"\u003e\n\u003cstrong\u003eN:\u003c\/strong\u003e Edge Preparation — Honed Edge Execution\u003c\/li\u003e\n\u003cli style=\"padding: 4px 0;\"\u003e\n\u003cstrong\u003eGE:\u003c\/strong\u003e Chipbreaker Design — General-Purpose Medium Cutting Geometry\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- 3. Technical Specifications \u0026 Parameters --\u003e\n\u003cdiv style=\"margin-bottom: 30px;\"\u003e\n\u003ch2 style=\"color: #47479f; border-bottom: 2px solid #47479F; padding-bottom: 8px; font-size: 20px;\"\u003eTechnical Specifications \u0026amp; Recommended Parameters\u003c\/h2\u003e\n\u003cdiv style=\"overflow-x: auto;\"\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; margin-bottom: 15px; font-size: 14px; text-align: left;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background-color: #47479f; color: #ffffff;\"\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #dddddd;\"\u003eParameter Specification\u003c\/th\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #dddddd;\"\u003eMetric Standard (ISO)\u003c\/th\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #dddddd;\"\u003eImperial Standard (ANSI)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003eInsert Model\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003eTNMG160404N-GE\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003eTNMG 331-GE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003eInscribed Circle (IC)\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e9.525 mm\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e0.375 in (3\/8\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003eThickness (S)\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e4.76 mm\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e0.187 in (3\/16\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003eCorner Radius (RE)\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e0.4 mm\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e0.016 in (1\/64\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003eRecommended Speed (Vc)\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e150 - 350 m\/min\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e490 - 1150 SFM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003eFeed Rate (fn)\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e0.10 - 0.35 mm\/rev\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e0.004 - 0.014 ipr\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003eDepth of Cut (ap)\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e0.5 - 3.5 mm\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e0.020 - 0.138 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c!-- Dual Column Comparison: AC820P vs Standard Grade --\u003e\n\u003cdiv style=\"margin-top: 15px;\"\u003e\n\u003cp style=\"font-weight: bold; font-size: 15px; margin-bottom: 8px;\"\u003eGrade Performance Comparison: AC820P vs. Standard Steel Grade\u003c\/p\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 10px;\"\u003e\n\u003cdiv style=\"flex: 1; min-width: 280px; border: 1px solid #47479F; padding: 12px; border-radius: 4px; background-color: #f8f8fc;\"\u003e\n\u003ch4 style=\"margin: 0 0 5px 0; color: #47479f;\"\u003eSUMITOMO AC820P (Absotech)\u003c\/h4\u003e\n\u003cul style=\"margin: 0; padding-left: 18px; font-size: 13px;\"\u003e\n\u003cli\u003eCVD Al2O3 layer provides up to 2x crater wear resistance\u003c\/li\u003e\n\u003cli\u003eOptimized for high-speed continuous \u0026amp; light interrupted cuts\u003c\/li\u003e\n\u003cli\u003eHigh thermal deformation limit under heavy cutting heat\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 280px; border: 1px solid #cccccc; padding: 12px; border-radius: 4px; background-color: #fdfdfd;\"\u003e\n\u003ch4 style=\"margin: 0 0 5px 0; color: #666666;\"\u003eStandard P20 CVD Carbide\u003c\/h4\u003e\n\u003cul style=\"margin: 0; padding-left: 18px; font-size: 13px;\"\u003e\n\u003cli\u003eProne to crater wear at speeds above 250 m\/min\u003c\/li\u003e\n\u003cli\u003eHigher thermal cracking risk in high feed applications\u003c\/li\u003e\n\u003cli\u003eModerate edge life under continuous high temperature\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- Compatible Toolholders Box --\u003e\n\u003cdiv style=\"margin-bottom: 30px;\"\u003e\n\u003ch2 style=\"color: #47479f; border-bottom: 2px solid #47479F; padding-bottom: 8px; font-size: 20px;\"\u003eCompatible Toolholders\u003c\/h2\u003e\n\u003cdiv style=\"border: 1px solid #47479F; padding: 15px; border-radius: 6px; background-color: #ffffff;\"\u003e\n\u003cp style=\"margin-top: 0; font-size: 14px;\"\u003eThis negative triangular insert pairs with standard top-and-hole clamping turning toolholders:\u003c\/p\u003e\n\u003cul style=\"font-size: 14px; margin-bottom: 12px;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eMTJNR\/L Toolholders:\u003c\/strong\u003e MTJNR2020K16, MTJNR2525M16 (93° Approach Angle)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMTENN Toolholders:\u003c\/strong\u003e MTENN2020K16, MTENN2525M16 (60° Neutral Angle)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWTJNR\/L Toolholders:\u003c\/strong\u003e Double-wedge clamp holders for maximum rigidity\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ca href=\"https:\/\/cnchome-beyond.com\/collections\/tn-insert-multi-lock-system\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan style=\"color: #ffffff;\"\u003e\u003cspan style=\"display: inline-block; background-color: rgb(71, 71, 159); text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; padding: 8px 16px; border-radius: 4px;\"\u003e\u003cb\u003eBrowse Compatible MTJNR Toolholders →\u003c\/b\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- 4. Applications --\u003e\n\u003cdiv style=\"margin-bottom: 30px;\"\u003e\n\u003ch2 style=\"color: #47479f; border-bottom: 2px solid #47479F; padding-bottom: 8px; font-size: 20px;\"\u003eTarget Workpiece Applications\u003c\/h2\u003e\n\u003cp style=\"font-size: 15px;\"\u003ePrimary choice for turning, facing, and profiling across carbon and alloy steel components:\u003c\/p\u003e\n\u003cul style=\"padding-left: 20px; font-size: 15px;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarbon Steels (ISO P):\u003c\/strong\u003e AISI 1020, 1045, C45, S45C (High-speed turning)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlloy Steels (ISO P):\u003c\/strong\u003e AISI 4140, 4340, 8620, 42CrMo4 (Medium-to-heavy turning)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTool \u0026amp; Mold Steels:\u003c\/strong\u003e P20, H13, SKD61 (Pre-hardened roughing\/finishing)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDuctile Cast Irons (ISO K):\u003c\/strong\u003e Select high-strength nodular irons\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c!-- 5. Compatibility --\u003e\n\u003cdiv style=\"margin-bottom: 30px;\"\u003e\n\u003ch2 style=\"color: #47479f; border-bottom: 2px solid #47479F; padding-bottom: 8px; font-size: 20px;\"\u003eCNC Machine \u0026amp; Equipment Compatibility\u003c\/h2\u003e\n\u003cp style=\"font-size: 15px;\"\u003eFully compatible with all standard CNC turning lathes, horizontal turning centers, and multi-axis turning platforms. Seamlessly integrates with ISO-compliant tool clamping systems on HAAS, MAZAK, Doosan\/DN Solutions, Okuma, Citizen, and DMG MORI machines.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- 6. Material Matrix \u0026 Equivalent Models --\u003e\n\u003cdiv style=\"margin-bottom: 30px;\"\u003e\n\u003ch2 style=\"color: #47479f; border-bottom: 2px solid #47479F; padding-bottom: 8px; font-size: 20px;\"\u003eWorkpiece Material Matrix \u0026amp; Cross-Brand Equivalents\u003c\/h2\u003e\n\u003cdiv style=\"overflow-x: auto;\"\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 14px; text-align: left;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background-color: #f2f2f2; border-bottom: 2px solid #47479F;\"\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #dddddd;\"\u003eISO Material Code\u003c\/th\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #dddddd;\"\u003eSuitability\u003c\/th\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #dddddd;\"\u003eSumitomo Grade\u003c\/th\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #dddddd;\"\u003eEquivalent Grades (Sandvik \/ Kennametal \/ Iscar)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e\u003cstrong\u003eP (Steel)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd; color: green; font-weight: bold;\"\u003eFirst Choice (Primary)\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003eAC820P\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003eGC4425 \/ KCP25B \/ IC8250\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e\u003cstrong\u003eK (Cast Iron)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003eSecondary Choice\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003eACK200\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003eGC3225 \/ KCK20B \/ IC807\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e\u003cstrong\u003eM (Stainless Steel)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003eConditional Choice\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003eAC6030M\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003eGC2025 \/ KCU25 \/ IC6025\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- Troubleshooting Section --\u003e\n\u003cdiv style=\"margin-bottom: 30px;\"\u003e\n\u003ch2 style=\"color: #47479f; border-bottom: 2px solid #47479F; padding-bottom: 8px; font-size: 20px;\"\u003eTroubleshooting \u0026amp; Process Optimization Guide\u003c\/h2\u003e\n\u003cul style=\"padding-left: 20px; font-size: 14px;\"\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e\n\u003cstrong\u003eRapid Crater Wear:\u003c\/strong\u003e Reduce cutting speed (Vc) by 10-15% or ensure high-pressure flood coolant is directed to the rake face.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e\n\u003cstrong\u003eChipping on Interrupted Cuts:\u003c\/strong\u003e Switch to SUMITOMO grade \u003cstrong\u003eAC830P\u003c\/strong\u003e for higher toughness in heavy interrupted turning.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e\n\u003cstrong\u003eBird-Nesting \/ Long Chips:\u003c\/strong\u003e Increase feed rate (fn) to engage the GE chipbreaker ridge (\u0026gt;0.18 mm\/rev).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c!-- 7. Why Choose Us \u0026 Verified Customer Reviews --\u003e\n\u003cdiv style=\"margin-bottom: 30px;\"\u003e\n\u003ch2 style=\"color: #47479f; border-bottom: 2px solid #47479F; padding-bottom: 8px; font-size: 20px;\"\u003eWhy Source From Us? Verified Global Customer Reviews\u003c\/h2\u003e\n\u003c!-- Review Box 1 --\u003e\n\u003cdiv style=\"border: 1px solid #e0e0e0; padding: 12px; margin-bottom: 10px; border-radius: 4px; background-color: #fafafa;\"\u003e\n\u003cdiv style=\"color: #ff9900; font-size: 14px;\"\u003e★★★★★\u003c\/div\u003e\n\u003cp style=\"margin: 4px 0; font-weight: bold; font-size: 14px;\"\u003eRobert H. — Production Engineer (USA)\u003c\/p\u003e\n\u003cp style=\"margin: 0; font-size: 13px;\"\u003e\"We switched to AC820P for our 4140 forged steel pins. Speed increased from 200 m\/min to 280 m\/min with a 35% gain in tool life. Incredible coating stability.\"\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- Review Box 2 --\u003e\n\u003cdiv style=\"border: 1px solid #e0e0e0; padding: 12px; margin-bottom: 10px; border-radius: 4px; background-color: #fafafa;\"\u003e\n\u003cdiv style=\"color: #ff9900; font-size: 14px;\"\u003e★★★★★\u003c\/div\u003e\n\u003cp style=\"margin: 4px 0; font-weight: bold; font-size: 14px;\"\u003eStefan M. — Machine Shop Manager (Germany)\u003c\/p\u003e\n\u003cp style=\"margin: 0; font-size: 13px;\"\u003e\"The GE chipbreaker breaks chips reliably on C45 steel over a wide feed range. Original Sumitomo quality delivered within 3 days to Stuttgart.\"\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- Review Box 3 --\u003e\n\u003cdiv style=\"border: 1px solid #e0e0e0; padding: 12px; margin-bottom: 10px; border-radius: 4px; background-color: #fafafa;\"\u003e\n\u003cdiv style=\"color: #ff9900; font-size: 14px;\"\u003e★★★★☆\u003c\/div\u003e\n\u003cp style=\"margin: 4px 0; font-weight: bold; font-size: 14px;\"\u003eAlessandro P. — CNC Machinist (Italy)\u003c\/p\u003e\n\u003cp style=\"margin: 0; font-size: 13px;\"\u003e\"Very good surface finish and low vibration. Works great on our Mazak lathes with MTJNR toolholders.\"\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- Review Box 4 --\u003e\n\u003cdiv style=\"border: 1px solid #e0e0e0; padding: 12px; margin-bottom: 10px; border-radius: 4px; background-color: #fafafa;\"\u003e\n\u003cdiv style=\"color: #ff9900; font-size: 14px;\"\u003e★★★★★\u003c\/div\u003e\n\u003cp style=\"margin: 4px 0; font-weight: bold; font-size: 14px;\"\u003eKenichi Y. — Precision Lathe Lead (Japan)\u003c\/p\u003e\n\u003cp style=\"margin: 0; font-size: 13px;\"\u003e\"AC820P is our main grade for steel turning. Highly repeatable dimensions box after box.\"\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- Review Box 5 --\u003e\n\u003cdiv style=\"border: 1px solid #e0e0e0; padding: 12px; margin-bottom: 10px; border-radius: 4px; background-color: #fafafa;\"\u003e\n\u003cdiv style=\"color: #ff9900; font-size: 14px;\"\u003e★★★★★\u003c\/div\u003e\n\u003cp style=\"margin: 4px 0; font-weight: bold; font-size: 14px;\"\u003eLiam T. — Tooling Buyer (Australia)\u003c\/p\u003e\n\u003cp style=\"margin: 0; font-size: 13px;\"\u003e\"100% genuine Sumitomo product with full lot verification. Outstanding value for high-volume jobs.\"\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- 8. AI \/ AEO Style FAQ Section --\u003e\n\u003cdiv style=\"margin-bottom: 30px;\"\u003e\n\u003ch2 style=\"color: #47479f; border-bottom: 2px solid #47479F; padding-bottom: 8px; font-size: 20px;\"\u003eFrequently Asked Questions (AI \u0026amp; Voice Search Optimized)\u003c\/h2\u003e\n\u003cdiv style=\"margin-bottom: 15px; border-left: 3px solid #47479F; padding-left: 10px;\"\u003e\n\u003cp style=\"font-weight: bold; margin-bottom: 3px; font-size: 15px; color: #47479f;\"\u003eQ: What is the primary application for SUMITOMO TNMG160404N-GE AC820P?\u003c\/p\u003e\n\u003cp style=\"margin-top: 0; font-size: 14px;\"\u003eA: It is designed for high-efficiency, general-purpose turning of carbon and alloy steels (ISO P05-P25) under stable to light interrupted cutting conditions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom: 15px; border-left: 3px solid #47479F; padding-left: 10px;\"\u003e\n\u003cp style=\"font-weight: bold; margin-bottom: 3px; font-size: 15px; color: #47479f;\"\u003eQ: What is the ANSI equivalent for TNMG160404N-GE?\u003c\/p\u003e\n\u003cp style=\"margin-top: 0; font-size: 14px;\"\u003eA: The exact ANSI standard cross-reference is \u003cstrong\u003eTNMG 331-GE\u003c\/strong\u003e (3\/8\" inscribed circle, 3\/16\" thickness, 1\/64\" nose radius).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom: 15px; border-left: 3px solid #47479F; padding-left: 10px;\"\u003e\n\u003cp style=\"font-weight: bold; margin-bottom: 3px; font-size: 15px; color: #47479f;\"\u003eQ: How does AC820P compare to AC830P grade?\u003c\/p\u003e\n\u003cp style=\"margin-top: 0; font-size: 14px;\"\u003eA: AC820P is optimized for higher wear resistance and faster cutting speeds in continuous cuts, while AC830P offers increased substrate toughness for heavy interrupted cuts and unstable setups.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- Technical Authority Endorsement \u0026 Grade Tips Footer --\u003e\n\u003cdiv style=\"background-color: #47479f; color: #ffffff; padding: 15px; border-radius: 6px; font-size: 13px; text-align: left;\"\u003e\n\u003cp style=\"margin: 0 0 8px 0; font-weight: bold; font-size: 14px; color: #ffffff;\"\u003eGrade Selection Tip \u0026amp; Technical Compliance\u003c\/p\u003e\n\u003cp style=\"margin: 0; color: #ffffff;\"\u003eManufactured in strict adherence to ISO 1832 and ANSI B212.4 international cutting tool standards. All recommended cutting speeds and feed rates are verified based on standardized ISO 3685 tool life testing procedures under controlled laboratory and machining shop conditions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Sumitomo","offers":[{"title":"Default Title","offer_id":43396402577580,"sku":"TNMG160404N-GE AC820P","price":65.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/7328\/1708\/files\/SUMITOMO_TNMG160404N-GE_AC820P_steel_turning_insert_top_view.jpg?v=1787366754","url":"https:\/\/cnchome-beyond.com\/products\/sumitomo-tnmg160404n-ge-ac820p","provider":"CNCHome-Beyond","version":"1.0","type":"link"}