CCMT09T308N-SU AC820P AC820P Wendeplatten - Sumitomo
Take advantage of the combination of precise CVD AC820P coating performance, a positive 80° C‑rhombus geometry and a 0.8 mm corner radius for consistent finishing results; order the insert directly via Metav Werkzeuge or request application advice from the consultants. Sumitomo CCMT09T308N-SU AC820P – Positive 80° turning insert for finishing steel A Sumitomo CCMT09T308N-SU AC820P turning insert engineered for finishing and light external and internal turning of steel in continuous to lightly interrupted cuts CVD-coated AC820P for balanced wear resistance Positive 80° C‑rhombus geometry for fine finishing SU chipbreaker for light, one-sided chips Two usable cutting edges; 0.8 mm corner radius Stable surface finish through positive geometry The positive C‑rhombus 80° form paired with a small 0.8 mm corner radius promotes a consistently fine surface on turned components. The insert’s positive rake and neutral cutting direction reduce cutting forces, which benefits smaller lathes and lighter set-ups by lowering vibration and improving repeatability. This geometry is particularly suited to finishing passes where surface integrity and dimensional stability are priorities. Balanced wear and fracture resistance for steady productivity Coated with a CVD Super‑FF layer (Al₂O₃/TiCN) of approximately 14 µm and a substrate hardness of 90.1 HRA, the grade delivers an even compromise between wear resistance and toughness. The measured bending strength of 2.2 GPa supports resistance against fracture in continuous to lightly interrupted cuts, making the insert a dependable choice for production runs requiring long tool life and fewer tool changes. Controlled chip formation and predictable cutting window The single‑sided SU chipbreaker and a slightly positive chip angle (approx. 8°) generate short, manageable chips for finishing operations. Recommended cutting parameters span ap 0.5–2.5 mm and feed f 0.07–0.30 mm/rev (optimum 0.20 mm/rev), with cutting speeds Vc 190–310 m/min (optimum 250 m/min) for steel applications. These ranges help to set up processes quickly and achieve repeatable component quality. Practical design for everyday turning tasks A cylindrical hole with a single countersink and a plate thickness of 3.97 mm ensure stable clamping and reliable seat location in standard toolholders. Two usable cutting edges extend the economical life of each indexable plate, while the neutral feed direction and positive geometry keep cutting forces moderate. The insert is supplied in practical packaging units of 10 pieces, facilitating workshop inventory management. For application advice or stock information on Sumitomo turning inserts, contact Metav Werkzeuge by e‑mail at info@metav-werkzeuge.com or by phone on +49 2822 7131930 Technical data Article number: 207108 Manufacturer article number: 207108 SKU: 207108-Sumitomo Product name: Sumitomo CCMT09T308N-SU AC820P Wendeschneidplatte Product type: Indexable insert for turning Brand: Sumitomo Origin: Japan Facts Substrate hardness: 90.1 HRA Layer thickness: approx. 14 µm Bending strength: 2.2 GPa Plate thickness: 3.97 mm Cutting edge length: 9.7 mm Inner circle diameter: 9.525 mm Cutting angle / tip angle: 80° Clearance angle: 7° Corner radius: 0.8 mm Usable cutting edges: 2 Recommended cutting speed Vc: 190–310 m/min (optimum 250 m/min) Feed range f: 0.07–0.30 mm/rev (optimum 0.20 mm/rev) ap range: 0.5–2.5 mm Pack unit: 10 pieces Tolerance class: M Special features Material: Cemented carbide, CVD-coated (Super‑FF, Al₂O₃/TiCN) Grade: AC820P (universal CVD sort for steel) Chipbreaker: SU – light, one-sided chip control Plate form: C‑Rhombus 80° (positive) Plate size: 09T3 (CCMT09T308N‑SU) Hole style: Cylindrical hole with single countersink Cutting direction: Neutral Application: Finishing to light external and internal turning of steel; continuous to slightly interrupted cuts Limitations: Not intended for heavy interrupted cuts, aggressive roughing or primarily stainless steel applications Suitability: Two usable cutting edges; positive rake angle approx. 8° FAQ What applications suit this turning insert best? The insert is designed for finishing and light external and internal turning of steel, performing well in continuous to slightly interrupted cuts; it is specified as a Sumitomo CCMT09T308N‑SU AC820P turning insert. Which cutting speeds and feeds are recommended? For the AC820P grade, use Vc 190–310 m/min (optimum 250 m/min) with feeds of 0.07–0.30 mm/rev (optimum 0.20 mm/rev) and ap between 0.5–2.5 mm for typical steel finishing tasks. What benefits does the CVD AC820P coating provide? The CVD AC820P coating (Al₂O₃/TiCN) offers a balanced combination of wear resistance and toughness, assisting long tool life and stable performance in finishing operations on steel. Can the insert be used for interrupted cuts? Yes, the insert tolerates light interruptions in cutting; however, it is not intended for heavy interrupted cuts or aggressive roughing where a more fracture‑resistant grade would be required. How many effective edges does each plate provide? Each plate offers two usable cutting edges, which supports economical indexation and reduces tooling costs in serial production. Manufacturer: Sumitomo Electric Hardmetal Corp.; 1‑1‑1 Koyakita, Itami, Hyogo 664‑0016; in Itami Works of Sumitomo Electric Industries, Ltd.
CNMG120404N-GU AC820P GU Wendeplatten - Sumitomo
Data inconsistency detected: the product lists "Sumitomo" as manufacturer, which is not included in the approved manufacturer directory for this specification. Please provide a manufacturer from the approved list (Kennametal, ISCAR, Sandvik, MetavCUT) or confirm the correct manufacturer details so a compliant product description can be generated. It is important to ensure that the manufacturer aligns with the approved directory to maintain compliance with the specification requirements and avoid potential issues during the approval process. If "Sumitomo" is indeed the correct manufacturer, additional documentation or clarification may be required to validate its inclusion in the directory.
DCMT11T304N-LU AC530U AC530U Wendeplatten - Sumitomo
Take advantage of the combination of positive 55° geometry, a PVD AC530U coating and high fracture resistance for predictable finishing results in small depths; order the insert directly via Metav Werkzeuge or ask the consultants for process parameters and availability. Sumitomo DCMT11T304N-LU AC530U indexable insert for finishing and light turning — Positive 55° PVD-coated carbide Sumitomo DCMT11T304N-LU AC530U is a positive D‑rhombus insert engineered for fine finishing and light turning of steel and stainless steel in applications with small depths and intermittent cuts Positive 55° D‑rhombus geometry PVD AC530U with high fracture resistance LU fine-chip breaker for stable chips Optimised for small depths and interrupted cuts Consistent finishing with a positive 55° geometry The combination of a positive 55° cutting angle and a fine LU chipbreaker delivers low cutting forces and a controlled chip shape, which is particularly beneficial when machining thin-walled components or parts in unstable setups. The positive rake reduces radial loads, so surface integrity improves during finishing operations. The insert’s corner radius 0.4 mm supports a consistent edge condition for predictable surface finish without aggressive material removal. Coating and substrate designed to resist chipping The multi‑layer PVD Super‑ZX‑Coat (TiAlN/AlCrN) in the AC530U grade combines a hard surface with enhanced toughness; with a measured hardness of 91.4 HRA and a reported bending fracture strength of 3.3 GPa, the system minimises edge breakage in interrupted cuts. This coating-substrate pairing is aimed at delivering high fracture resistance and sharp positive edges that maintain form during light turning and finishing, extending usable edge life under conservative cutting speeds. Geometry and handling for reliable indexation The insert’s D‑rhombus 55° form and neutral cutting direction enable flexible toolholder choices while the cylindrical hole with one-sided countersink ensures secure seating and repeatable positioning in standard toolholders. With two usable cutting edges per insert, a thin plate thickness of 3.97 mm and a relief angle of 7°, the design supports easy re‑indexing and stable clamping — a practical advantage when frequent edge changes are required in small‑batch or mixed‑series production. Process window and practical recommendations For best results start conservatively: depth of cut (ap) in the range 0.2–1.5 mm and feeds between 0.05–0.20 mm/rev, adjusting speeds by material and machine rigidity. The grade is optimised for finishing / light turning of steel and stainless steel and performs well in interrupted cuts and contours; it is not intended for hard roughing, continuous high‑speed heavy cuts, cast iron or non‑ferrous alloys. Packaged in practical units of 10 pieces, the inserts originate from Japan and are suitable where precise surface quality and edge stability are priorities. For supplementary technical data or tailored cutting parameter recommendations, Metav Werkzeuge provides application support via e‑mail and telephone. Contact Metav Werkzeuge for precise process support and availability of the Sumitomo AC530U insert — phone +49 2822 7131930 or e‑mail info@metav-werkzeuge.com Technical data Article number: 203727-Sumitomo Manufacturer item no.: DCMT11T304N-LU AC530U Type: Indexable insert for turning Manufacturer: Sumitomo Origin: Japan Facts Cutting angle: 55° Relief angle: 7° Plate thickness: 3.97 mm Cutting-edge length: 11.6 mm Corner radius: 0.4 mm Inner hole diameter: 9.525 mm Number of cutting edges: 2 Tolerance class: M Hardness: 91.4 HRA Bending fracture strength: 3.3 GPa Special features Geometry: D‑rhombus 55°, positive Chipbreaker: LU – fine-chip, one-sided, positive rake ~15° Coating: PVD Super‑ZX‑Coat TiAlN/AlCrN multi‑layer Material: Cemented carbide, PVD-coated Application: Finishing and light turning of steel and stainless steel Hole style: Cylindrical hole with one-sided countersink Feed/direction: Neutral Pack size: 10 pieces Origin: Japan Edge type: Two usable cutting edges FAQ What machining tasks suit this insert best? This insert is intended for finishing and light turning of steel and stainless steel; it performs well with small depths and interrupted cuts where surface quality and edge stability are required. Which grade and coating does the insert use? The insert is supplied in the AC530U grade with a multi‑layer PVD Super‑ZX‑Coat (TiAlN/AlCrN), offering a balance of hardness and fracture resistance for fine finishing. What are the recommended starting parameters? A practical starting point is ap 0.2–1.5 mm and feed 0.05–0.20 mm/rev; speeds should be adapted to material and machine rigidity, beginning conservatively. How many usable edges does each insert provide? Each insert offers two usable cutting edges, allowing economical re‑indexing during production. Is this insert suitable for cast iron or aluminium? This grade is not optimised for cast iron or non‑ferrous metals; it is designed primarily for steel and stainless steel finishing applications. Manufacturer/Responsible: Metav Werkzeuge GmbH; Parkring 45; 46446 Emmerich; Germany; +49 2822 7131930; info@metav-werkzeuge.com
DCMT11T304N-SU AC8035P AC8035P Wendeplatten - Sumitomo
Benefit from the combination of a positive 55° D‑rhombus geometry, a proven SU chipbreaker and the CVD‑coated AC8035P grade for secure edges and stable performance in light, interrupted steel turning; order the insert directly via Metav Werkzeuge or consult our specialists for application support. DCMT11T304N-SU AC8035P turning indexable insert — positive 55° geometry, CVD-coated (Sumitomo) The Sumitomo DCMT11T304N-SU AC8035P is a positive, D‑rhombus 55° indexable insert designed for light, interrupted steel turning with an SU chipbreaker and a 0.4 mm corner radius CVD-coated grade AC8035P for edge security Positive D‑rhombus 55° geometry for fine turning SU chipbreaker for light interrupted steel cuts Two usable cutting edges; 0.4 mm corner radius Reliable chip control and secure edges for interrupted cuts The positive D‑rhombus 55° profile combined with the SU chipbreaker creates controlled chip breakage and low cutting forces, making the insert particularly suitable for light, interrupted steel machining and components with variable surface conditions such as forged skins. The small 0.4 mm corner radius reduces impact at entry and exit, lowering the risk of chipping; the dual usable cutting edges extend tool life per index, improving uptime and reducing handling frequency. Coating and substrate engineered for reduced crack propagation The insert is produced from CVD‑coated carbide in the AC8035P grade with a surface treatment (ABSOTECH) that reduces stress concentration. With a hardness of 89.4 HRA and a quoted transverse fracture strength of 2.6 GPa, the combination provides high edge and break resistance under interrupted loads. The approximately 9 µm coating thickness optimises edge protection; note that while the grade excels in interrupted and variable conditions, continuous, quiet high‑speed finishing is not its primary strength. Process windows and starting recommendations for steady results For stable cutting start in the suggested geometry range: radial depth of cut ap 0.5–2.5 mm and feed f 0.07–0.30 mm/rev. Recommended cutting speeds are application dependent: Vc ≈ 140–220 m/min for mild steels and ≈ 90–160 m/min for higher alloyed or carburised steels, beginning at the lower end and increasing as process confidence grows. These ranges help achieve repeatable component quality while protecting the insert from overload during entry and broken surfaces. Dimensions, clamping and handling for easy integration Key dimensions and handling details support simple machine integration: plate thickness 3.97 mm, usable cutting edge length 11.6 mm, inner hole diameter 9.525 mm with a cylindrical hole and one‑sided countersink, and two usable cutting edges per insert. The insert is supplied in a pack unit of 10 pieces and is produced in Japan; tolerance class M ensures consistent fit in standard turning toolholders. The neutral cutting direction and positive clearance angle of 7° combine for forgiving tool behaviour under variable conditions. Contact Metav Werkzeuge today for tailored recommendations on Sumitomo AC8035P inserts and to discuss suitable cutting parameters or sample packs — eMail: info@metav-werkzeuge.com, Tel: +49 2822 7131930 Technical Data Article number: 245078-Sumitomo Manufacturer SKU: DCMT11T304N-SU AC8035P Product type: turning indexable insert Origin: Japan Packaging unit: 10 pieces Data Hardness: 89.4 HRA Plate thickness: 3.97 mm Cutting edge length: 11.6 mm Corner radius: 0.4 mm Included angle / nose angle: 55° Relief angle / free angle: 7° Inner hole diameter: 9.525 mm Number of usable cutting edges: 2 Tolerance class: M Special features Material: carbide, CVD‑coated (AC8035P) Chipbreaker geometry: SU — one‑sided, positive rake ≈ 8° Geometry: D‑rhombus 55°, positive insert Hole style: cylindrical hole with one‑sided countersink Application: light, interrupted steel turning; suitable for forged surfaces and variable conditions Coating details: ABSOTECH CVD, layer thickness ≈ 9 µm; reduced surface stresses Mechanical: high edge and fracture resistance; bending strength 2.6 GPa Limits: not optimised for heavy roughing or continuous high‑speed finishing FAQ What material is this insert best suited for? The DCMT11T304N-SU AC8035P insert is optimised for steel machining, particularly light, interrupted cuts and components with forged surfaces; its AC8035P CVD grade gives improved edge security in such conditions. Which chipbreaker is fitted and what does it achieve? The insert features an SU chipbreaker, a one‑sided positive design that provides controlled chip formation and reduced cutting forces during interrupted and variable‑condition turning. What are the recommended cutting parameters to start with? Begin with ap 0.5–2.5 mm and feed 0.07–0.30 mm/rev; suggested cutting speeds are ≈ 140–220 m/min for mild steels and ≈ 90–160 m/min for higher alloyed steels, adjusting upward as stability permits. How many times can the insert be indexed? The insert has two usable cutting edges, enabling one index change; the positive geometry and robust coating help prolong useful life under interrupted loads. Are there limitations to using this grade? Yes — the AC8035P grade and 55° DCMT geometry are not intended for heavy roughing or for continuous, quiet high‑speed finishing where different grades or geometries perform better. Manufacturer/Responsible: Metav Werkzeuge GmbH; Parkring 45; 46446 Emmerich; Germany; +49 2822 7131930; info@metav-werkzeuge.com
DNMG150608N-SU AC820P Wendeplatten - Sumitomo
Take advantage of a robust CVD coating and a stable 55° negative geometry to achieve consistent finishes and reduced tooling changes in serial turning. Order the Sumitomo insert directly via Metav Werkzeuge or consult our specialists for application-specific recommendations. Sumitomo DNMG150608N-SU AC820P – indexable turning insert, CVD-coated, 55° D‑rhombus The Sumitomo DNMG150608N-SU AC820P is a double‑sided negative 55° indexable insert designed for finishing to light contouring of steel components. CVD-coated AC820P grade with Al₂O₃/TiCN 55° D‑rhombus negative geometry Robust 6.35 mm plate with 4 edges SU chipbreaker for fine finishing Stable finish quality through advanced coating and grade The combination of the AC820P grade with a CVD Super‑FF‑Coat (Al₂O₃/TiCN) delivers a balance of hardness and thermal resistance that supports consistent edge life during finishing operations. With a measured hardness of 90.1 HRA and a coating thickness of approx. 14 µm, this insert maintains cutting performance on a broad range of steels while reducing flank wear. The technical finish of the coating improves resistance to built‑up edge and helps sustain geometric integrity under the moderate cutting speeds recommended for this family. Geometry and chip control for precise contouring The D‑rhombus 55° negative form combined with the SU chipbreaker provides a stable support zone and gentle chip formation suited to fine cuts. The insert offers a 0.8 mm corner radius and four usable cutting edges, on a 6.35 mm plate that increases rigidity at the toolholder interface. A neutral cutting direction and the cylindrical through‑hole aid in repeatable clamping and quick indexing. Typical starting parameters are ap 0.5–2.0 mm, f 0.08–0.30 mm/rev and Vc in the range 190–310 m/min for steel; validate speeds against workpiece stability and machine dynamics. Productivity and shopfloor advantages Using a double‑sided, four‑edge insert reduces tooling expenditure and downtime for replacements in repetitive finishing tasks. The insert’s robust negative plate and standard form factor (1506) simplify tool‑set planning across turning programmes and facilitate predictable setup. The design is optimised for finishing to light machining rather than heavy roughing or highly interrupted cuts, which helps specify the right insert for the job and avoid premature edge failure. Packing in 10 pieces supports stocked supply and quick replenishment. Contact Metav Werkzeuge for supply and machining guidance on the Sumitomo DNMG150608N-SU AC820P insert — email info@metav-werkzeuge.com or call +49 2822 7131930 for application validation and ordering assistance Technical data Article number: 207074 SKU: 207074-Sumitomo Manufacturer SKU: DNMG150608N-SU AC820P Name: Sumitomo DNMG150608N-SU AC820P Wendeschneidplatte Material: Hartmetall, CVD‑coated Origin: Japan Packaging unit: 10 pieces Numbers / Core technical data Cutting angle / Spitzenwinkel: 55° Plate thickness: 6.35 mm Corner radius: 0.8 mm Number of cutting edges: 4 Cutting edge length: 15.5 mm Inner circle / bore: 12.7 mm Hardness: 90.1 HRA Bending strength: 2.2 GPa Coating thickness: approx. 14 µm Recommended depth of cut (ap): 0.5–2.0 mm Recommended feed (f): 0.08–0.30 mm/rev Recommended cutting speed (Vc) for steel: 190–310 m/min Tolerance class: M Designs / Special features D‑rhombus 55° negative plate form SU chipbreaker, double‑sided geometry Four usable cutting edges per insert Neutral cutting direction Cylindrical through‑hole (Zylindrisches Durchgangsloch) CVD Super‑FF‑Coat (Al₂O₃/TiCN) Robust 6.35 mm plate for increased rigidity Intended for finishing to light contouring; not for heavy roughing or heavy interrupted cuts Manufacturer article number: 207074 ANSI reference: DNMG442ESU Monotaro code: 41306045 FAQ What materials is this insert suitable for? The Sumitomo DNMG150608N-SU AC820P insert is aimed at machining steel in finishing to light contouring operations, leveraging its AC820P CVD coating and SU chipbreaker for steady edge behaviour. How many cutting edges are available per insert? Each insert provides four usable cutting edges thanks to its double‑sided negative design, which supports economical tool usage and rapid indexing. Which cutting parameters should be considered as a starting point? Start with ap 0.5–2.0 mm, feed 0.08–0.30 mm/rev and Vc ~190–310 m/min for steel; the actual choice depends on workpiece rigidity, toolholder stability and machine capability when using the Sumitomo AC820P grade. Can this insert be used for roughing operations? No — the insert’s SU chipbreaker is a fine/finish geometry optimised for light cuts; it is not recommended for heavy roughing, very high feeds or severely interrupted cuts. Is the coating suitable for elevated temperatures? The CVD Super‑FF‑Coat (Al₂O₃/TiCN) offers thermal stability and wear resistance beneficial for finishing speeds, helping to reduce flank wear during continuous finishing passes. Manufacturer / Responsible: Sumitomo Electric Hardmetal Corp.; 1‑1‑1 Koyakita, Itami, Hyogo 664‑0016; Japan
null AC8025P AC8025P Wendeplatten - Sumitomo
Take advantage of the combination of reliable CVD ABSOTECH Platinum coating, a GU universal chipbreaker, and an 80° C-rhombus geometry for consistent performance in general and medium steel turning; order directly via Metav Werkzeuge or consult the technical team for application-specific advice. Sumitomo CNMG120408N-GU AC8025P indexable turning insert — 80° C-rhombus, CVD-coated The Sumitomo CNMG120408N-GU AC8025P is a negative 80° indexable insert designed for general and medium steel turning, providing stable cutting in continuous to lightly interrupted conditions. C-rhombus 80° negative geometry CVD ABSOTECH Platinum coating AC8025P GU universal chipbreaker, double-sided Four usable cutting edges per insert Consistent performance for general and medium steel turning The insert is engineered around an 80° C-rhombus geometry and a GU universal chipbreaker, which together deliver stable engagement and reliable chip control in typical steel turning tasks. The CVD ABSOTECH Platinum coating with a hardness of 90.1 HRA and an approx. 12 µm layer thickness reduces adhesion and build-up at the cutting edge, extending productive cutting intervals. This combination is particularly beneficial where repeatable surface quality and predictable tool life are priorities. Predictable cutting window and machining recommendations Recommended cutting windows are documented to support process planning: for workpieces up to ~180 HB, a depth of cut (ap) of 1.0–4.0 mm, feed 0.20–0.50 mm/rev, and cutting speed Vc 200–320 m/min (optimum ≈ 260 m/min) form a validated starting point. For harder materials above ~180 HB, the same ap and feed ranges apply but with reduced speeds (Vc 130–230 m/min, optimum ≈ 165 m/min). These values enable a straightforward selection of parameters and allow setup engineers to balance productivity and tool life efficiently. Robust edge security and operational versatility The double-sided design provides four usable cutting edges and a 0.8 mm corner radius, offering a broad window for finishing and semi-finishing passes. The insert’s bending strength of 2.3 GPa supports reliable performance under varying cutting forces. While optimised for general steel work, the insert is not the primary choice for heavy interrupted cuts, maximum high-speed continuous cuts, hardened steel or stainless steel — its strengths lie in a wide, economical application range with low adhesion and good resistance to edge chipping. Discuss machining parameter optimisation and order Sumitomo CNMG120408N-GU AC8025P inserts through Metav Werkzeuge; technical consultants are available at info@metav-werkzeuge.com or +49 2822 7131930 to tailor recommendations to specific machines and workpiece materials Technical data Article number: 19P7335 SKU: 230846-Sumitomo Manufacturer SKU: CNMG120408N-GU AC8025P Product: Sumitomo CNMG120408N-GU AC8025P indexable insert Origin: Japan Numbers / Core technical data Hardness: 90.1 HRA Layer thickness: approx. 12 µm Bending strength: 2.3 GPa Plate thickness: 4.76 mm Cutting edge length: 12.9 mm Inner hole diameter: 12.7 mm Corner radius: 0.8 mm Number of usable edges: 4 Pack quantity: 10 pieces Included angle / tip angle: 80° Tolerance class: M Recommended windows (≤ ~180 HB): ap 1.0–4.0 mm; f 0.20–0.50 mm/rev; Vc 200–320 m/min (optimum ≈ 260 m/min) Recommended windows (> ~180 HB): ap 1.0–4.0 mm; f 0.20–0.50 mm/rev; Vc 130–230 m/min (optimum ≈ 165 m/min) Designs / Special features C-rhombus 80° negative geometry GU universal chipbreaker, general/middle machining, double-sided Carbide, CVD-coated (ABSOTECH Platinum) Cylindrical through-hole Neutral cutting direction Four usable edges per insert Current Sumitomo first recommendation for general steel turning Not optimised for highest-speed continuous cuts or heavily interrupted/hardened steel FAQ What materials is this insert intended to machine? The Sumitomo CNMG120408N-GU AC8025P indexable insert is intended primarily for general and medium steel turning and performs best within the documented cutting windows for mild to medium-hard steels. What does the GU chipbreaker deliver in practice? The GU universal chipbreaker on this insert provides controlled chip formation for a wide range of cutting depths and feeds, supporting predictable surface finish and reduced edge build-up during standard turning tasks. How many usable edges are available per insert and what is the corner radius? Each double-sided insert supplies four usable cutting edges and a corner radius of 0.8 mm, allowing for multiple indexings before replacement. Are there any application limits for this grade? The AC8025P grade is not the primary choice for the heaviest interruptions, extreme high-speed continuous cuts or hard and stainless steels; it is optimised for a broad, economical range of steel turning operations. What is the significance of the CVD ABSOTECH Platinum coating? The CVD ABSOTECH Platinum coating enhances surface smoothness and reduces adhesion at the cutting edge, lowering the risk of built-up edge and improving edge security under typical turning conditions. Manufacturer: Sumitomo; Origin: Japan
null CCMT120408N-SU AC820P Wendeplatten - Sumitomo
Take advantage of the large positive geometry and the AC820P CVD coating to achieve low cutting forces and consistent finishing results; combine reliable fracture resistance with two usable cutting edges for efficient production flow. Order the insert directly via Metav Werkzeuge or consult our specialists for application advice. Sumitomo CCMT120408N-SU AC820P indexable turning insert – large positive C‑Rhombus 80°, CVD-coated The Sumitomo CCMT120408N-SU AC820P is a large, positive 80° C‑rhombus insert designed for finishing to light external and internal turning of steel, featuring an SU chipbreaker and a 0.8 mm corner radius for low cutting forces and improved surface quality Large positive C‑rhombus 80° form CVD-coated AC820P, low cutting forces SU chipbreaker optimised for finishing 0.8 mm corner radius, two usable edges Cleaner finishing with lower cutting forces The large positive C‑Rhombus 80° geometry reduces cutting resistance and lowers power draw during light turning operations, which directly benefits cycle times and tool life. The positive rake and the SU chipbreaker produce short, controllable chips suitable for uninterrupted finishing passes, helping to maintain a stable cutting regime. For machining operations where surface quality and dimensional consistency matter, this geometry minimises vibration and supports predictable tool wear, resulting in fewer rework cycles and improved process stability. Durable coating and material for balanced wear resistance The insert is made of CVD-coated cemented carbide with the AC820P specification; the CVD Super‑FF‑Coat (Al₂O₃/TiCN) with a layer thickness of about 14 µm offers a combination of wear resistance and fracture toughness. With a measured hardness of 90.1 HRA and a flexural strength of approximately 2.2 GPa, the grade is engineered for steady performance in finishing and light turning of steel. Recommended cutting data supports efficient operation at Vc 190–310 m/min (optimum 250 m/min) with feeds in the range f 0.07–0.30 mm/U; these parameters help exploit the coating’s strengths while avoiding aggressive conditions for which this grade is not intended. Integration and economy for day-to-day production The insert’s 0.8 mm corner radius and two usable edges provide a practical balance between edge strength and fine finish capability, reducing tool change frequency and inventory complexity. The cylindrical hole with one‑side countersink and the neutral cutting direction support secure mounting in common turning toolholders, while the 4.76 mm plate thickness contributes to stable clamping and repeatable positioning. With recommended depth of cut ap 0.5–2.5 mm and a clear specification window for feeds, the component integrates smoothly into established turning cycles and is supplied in a standard unit of 10 pieces for predictable replenishment. Contact Metav Werkzeuge for application-specific recommendations on the Sumitomo CCMT120408N-SU AC820P insert or to check current availability; phone +49 2822 7131930 or email info@metav-werkzeuge.com Technical data Article number: 207117-Sumitomo Manufacturer SKU: CCMT120408N-SU AC820P Product type: Indexable turning insert Article name: Sumitomo CCMT120408N-SU AC820P Wendeschneidplatte Facts Geometry: C‑Rhombus 80° Cutting angle / tip angle: 80° Clearance angle: 7° Corner radius: 0.8 mm Plate thickness: 4.76 mm Cutting edges: 2 usable edges Cutting length: 12.9 mm Inner circle: 12.7 mm Tolerance class: M Hardness: 90.1 HRA Flexural strength: ~2.2 GPa Recommended ap: 0.5–2.5 mm Recommended feed f: 0.07–0.30 mm/U Cutting speed Vc: 190–310 m/min (optimum 250 m/min) Packaging unit: 10 pieces Special features Material: CVD-coated cemented carbide Coating: CVD Super‑FF‑Coat (Al₂O₃/TiCN), ~14 µm Chipbreaker: SU (single-sided, positive chip geometry) Hole style: Cylindrical hole with one-sided countersink Application: Finishing to light external and internal turning of steel Strengths: Low cutting forces, large positive form, balanced wear and fracture resistance Limits: Not intended for heavy interrupted cuts, aggressive roughing, or primary stainless steel applications Origin: Japan FAQ What materials is this insert suitable for? The CCMT120408N-SU AC820P insert is optimised for finishing and light turning of steel, with the coating and geometry tuned to low cutting forces and stable wear behaviour in those applications. Can this grade be used for heavy interrupted cuts or roughing? No; the AC820P CVD grade and the positive SU geometry are designed for finishing and light machining. Heavy interrupted cuts or aggressive roughing exceed the recommended operating envelope for this insert. What are the recommended cutting parameters for efficient finishing? Recommended ranges are Vc 190–310 m/min (optimum 250 m/min) with feeds f 0.07–0.30 mm/U and depths of cut ap 0.5–2.5 mm, which leverage the coating and geometry for consistent surface quality. How many usable edges does the insert offer and what is the corner radius? The insert provides two usable cutting edges and a corner radius of 0.8 mm, balancing edge strength with the capacity to achieve fine surface finishes. Does the insert require a special toolholder due to the hole style? The cylindrical hole with a one-sided countersink is compatible with common clamping systems for CCMT-style inserts; secure seating and correct tightening in a suitable holder ensure repeatable performance. Manufacturer/Responsible: Sumitomo Electric Hardmetal Corp., 1-1-1, Koyakita, Itami, Hyogo 664-0016 (in Itami Works of Sumitomo Electric Industries, Ltd.)
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