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