DCMT 11T304 AH905 Wendeplatten - Tungaloy

Benefit from the combination of a PVD-coated carbide AH905 grade that resists wear and chipping, and the ISO rhombic DCMT geometry with a 0.4 mm corner radius and 7° clearance for consistent turning performance. Order the insert directly via Metav Werkzeuge or consult our advisors for application-specific guidance.

DCMT11T304 AH905 ISO turning insert — Turning — Tungaloy

The DCMT11T304 AH905 is an ISO-compliant rhombic turning insert designed for external and internal turning, offering a single-sided chipbreaker and a secure clamping interface.

• PVD-coated carbide AH905
• ISO rhombic DCMT geometry
• 0.4 mm corner radius for finishing
• Cylindrical hole with 40°–60° countersink

Predictable compatibility and concise system build for ISO tooling

The insert follows the ISO indexable plate system and the rhombic DCMT geometry, which provides a 55° included angle suited to typical turning applications. Compatibility with a respective holder is determined by plate form, clearance angle (7°), tolerance class, attachment style, size and thickness; this standardisation reduces setup time and simplifies tool inventory. The technical fit ensures a reproducible seating and repeatable tool offsets, supporting stable cycle times and easier tool management on the shop floor.

Durable cutting edge through PVD coating and robust carbide

The AH905 grade combines a PVD-coated surface with a carbide substrate to extend tool life where a sharp edge and process security are required. The coating reduces abrasive wear and improves thermal resistance, while the substrate grants toughness to resist chipping. As a result, operators obtain longer uninterrupted cutting intervals and more consistent surface quality, which lowers downtime and contributes to predictable machining costs.

Application-focused performance for external and internal turning

Designed with a single-sided chipbreaker, this insert supports controlled chip formation in a range of turning tasks. The modest 0.4 mm corner radius balances edge strength and surface finish: smaller radii improve finish quality, while the carbide base preserves edge stability under interrupted cuts. The plate is therefore appropriate when process reliability and a precise edge are priorities, and it adapts well to varying feed rates and depths of cut within standard turning operations.

Mounting and handling that prioritise secure clamping and serviceability

The plate is supplied with a cylindrical hole and a single-sided countersink (40°–60°) to ensure positive clamping in compatible ISO holders or boring bars; correct seating prevents micro-movements that can degrade finish and shorten life. The 3.97 mm plate thickness and 11 mm inscribed size correspond to common nose geometries and toolholder portfolios, allowing straightforward replacement without complex rework. Replacement screws and clamping sets follow the same ISO conventions, enabling fast tool changes and low operator learning curves.

For tailored machining advice and rapid supply of the DCMT11T304 AH905 insert, contact Metav Werkzeuge via info@metav-werkzeuge.com or call +49 2822 7131930 for availability and application recommendations

Technical Data

• Article number: 6879337
• SKU: 6879337-Tungaloy
• Manufacturer SKU: TUN6879337
• Brand: Tungaloy
• Model series: ISO turning indexable inserts
• Product designation: DCMT11T304 AH905

Key measurements

• Included angle: 55°
• Clearance angle: 7°
• Corner radius: 0.4 mm
• Plate thickness: 3.97 mm
• Inscribed size: 11 mm
• Countersink angle: 40°–60°

Features & materials

• PVD-coated carbide AH905
• Rhombic plate form (DCMT)
• Single-sided chipbreaker
• Cylindrical hole with single-side countersink
• For external and internal turning
• Compatibility determined by form, clearance angle, tolerance, size, thickness
• Sharp cutting edge with process-focused grade

FAQ

What is the main benefit of the AH905 grade?
The AH905 grade provides a PVD-coated carbide construction that combines wear resistance with fracture toughness, making the DCMT11T304 AH905 insert (SKU 6879337-Tungaloy) suitable when a sharp cutting edge and process security are required.

Which holder types are compatible with this insert?
Compatibility is based on the ISO DCMT geometry and the plate’s dimensions; the insert works with ISO rhombic external holders or boring bars that accept an 11 mm inscribed size and a 3.97 mm plate thickness, using the cylindrical hole and countersink for secure clamping.

How does the 0.4 mm corner radius affect machining?
A 0.4 mm corner radius offers a compromise between surface finish and edge strength: it helps achieve a finer finish while maintaining sufficient edge toughness for many turning operations.

Is the insert suitable for interrupted cuts or heavy machining?
The combination of a robust carbide substrate and the AH905 coating enhances resistance to chipping and wear; however, final suitability depends on cutting parameters and holder rigidity, so select the chipbreaker and grade in line with the process demands.

What are the mounting details for secure clamping?
The plate features a cylindrical hole with a single-sided countersink (40°–60°) to ensure reproducible seating and reliable clamping in compatible ISO holders, reducing the risk of micro-movement during cutting.

Manufacturer/Responsible: Tungaloy-NTK Germany GmbH, Katzbergstraße 3a, 40764 Langenfeld - Protected trademarks and product names are the property of their respective owners. Brand names and protected trademarks are mentioned solely for explanatory purposes. There is no affiliation between our company and the mentioned brands. The item offered is an original, brand-new product from the manufacturer.