SPMT 120408 AH725 Wendeplatten - Tungaloy

Take advantage of a PVD-coated carbide grade engineered for high process reliability and stable chip formation together with precise ISO compatibility for fast, repeatable insert changes. Order directly via Metav Werkzeuge or contact the team for application advice.

SPMT 120408 AH725 SPMT Drehen by Tungaloy — ISO turning insert, PVD-coated carbide, 0.8 mm corner radius

SPMT120408 AH725 is an ISO turning indexable insert designed for external and internal turning with a one-sided chipbreaker and secure clamping via a cylindrical hole and countersink

• ISO turning insert SPMT120408 AH725 by Tungaloy
• PVD-coated carbide; for Stahl and rostfreier Stahl
• Square 12 mm, 4.76 mm thick, 0.8 mm corner radius
• Cylindrical hole with one-sided countersink 40°–60°

Consistent machining across mixed batches

The AH725 grade is a PVD-coated carbide formulation that combines wear resistance with fracture toughness, making it suitable for machining both Stahl and rostfreier Stahl under varying conditions. As an ISO-compliant indexable insert, this solution reduces uncertainty when switching between holders: the form, 11° clearance angle and tolerance class match standard clamping systems to ensure repeatable seating. The result is improved process reliability and fewer interrupted cycles due to insert failure, which supports higher throughput in small to medium batch production.

Precise fit and reliable clamping for repeatable results

Dimension control is central for predictability on the shop floor. The square geometry (12 mm) combined with a plate thickness of 4.76 mm and an included angle of 90° provides a stable cutting edge platform, while the 0.8 mm corner radius helps blend edge strength with controlled cutting engagement. The cylindrical hole with a single-sided countersink (40°–60°) secures the insert in the seat and reduces micro‑movement during interrupted cuts. These measurable parameters translate into predictable tool offsets, reduced set-up time and consistent surface quality across repeat operations.

Efficient cutting, longer tool life and practical turning use

A one-sided chipbreaker designed for turning reduces built-up edge and improves chip control when machining varied workpieces, helping maintain a steady metal removal rate. The PVD-coated surface minimises abrasive wear and supports higher cutting parameters where appropriate, extending cumulative cutting length and lowering tool-change frequency. For shops that face frequent material changes or small-diameter tooling demands, the combination of a universal grade and a robust chip control design offers an economical route to lower total operating cost while keeping quality and safety at a high level.

For tailored recommendations on Tungaloy AH725 inserts and assured availability, contact Metav Werkzeuge at info@metav-werkzeuge.com or call +49 2822 7131930 — technical consultants are available to advise on holder compatibility and application settings

Technical data

• Article number: 6856790
• Manufacturer SKU: TUN6856790
• SKU: 6856790-Tungaloy
• Model series: ISO turning indexable inserts
• Material: carbide
• Designation: SPMT120408

Facts

• Plate size: 12 mm
• Plate thickness: 4.76 mm
• Corner radius: 0.8 mm
• Clearance angle: 11°
• Included angle: 90°

Special features

• Grade: AH725 (PVD-coated carbide)
• Shape: square
• Chipbreaker: one-sided
• Hole style: cylindrical hole with one-sided countersink (40°–60°)
• Typical application: turning (external and internal)
• Compatibility determined by form, clearance angle, tolerance class and size

FAQ

What materials is this insert suitable for?
The SPMT120408 AH725 insert is specified for machining Stahl and rostfreier Stahl, with the AH725 grade offering a balance of wear resistance and toughness for mixed-material production.

How does the PVD coating affect cutting performance?
The PVD-coated carbide of the SPMT120408 AH725 increases abrasive wear resistance and thermal stability, allowing for higher cutting parameters and extended tool life under standard turning conditions.

Which holders are compatible with this ISO insert?
Compatibility depends on holder form, 11° clearance angle, tolerance class, fastening method and the plate size (12 mm); the insert's ISO designation ensures broad fitment with standard turning holders.

What is the benefit of the 0.8 mm corner radius?
A 0.8 mm corner radius offers an improved edge strength for interrupted cuts while keeping cutting forces moderate, which helps sustain surface finish and prolong edge life.

Is the insert suitable for small tool applications?
Yes. The universal AH725 grade and compact square geometry make the insert particularly useful in smaller tooling where high process security and reduced breakouts are required.

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.