SPMT 120404 AH725 Wendeplatten - Tungaloy

Take advantage of the combination of ISO compatibility, a universal PVD-coated grade and stable chip control to keep turning operations consistent and productive; order the insert directly via Metav Werkzeuge or consult the team for application-specific advice.

SPMT 120404 AH725 — ISO turning insert, PVD-coated carbide, one-sided chipbreaker (Tungaloy)

A SPMT120404 AH725 indexable insert for ISO‑standard turning, designed for reliable machining of steel and stainless steel.

• ISO‑standard SPMT120404 geometry
• PVD-coated carbide grade AH725
• Universal, breakage-resistant for steel & stainless
• One-sided chipbreaker for stable turning
• Cylindrical hole with single-side countersink

High process security with a universal PVD grade

The PVD-coated AH725 grade offers a practical balance between toughness and wear resistance, making it suitable for mixed-production environments where workpiece materials vary. As a result, the indexable insert provides consistent tool life and reduced risk of edge breakouts during interrupted cuts or less stable setups. This translates into fewer tool changes and more predictable cycle times, supporting steady output and improved overall equipment effectiveness.

Precise geometry for repeatable clamping and chip control

The ISO‑compliant square form and the one-sided chipbreaker ensure reliable seating in compatible holders and efficient chip evacuation. The insert features a corner radius of 0.4 mm, a clearance angle of 11° and a plate thickness of 4.76 mm, which together support accurate dimensioning and stable cutting forces. The cylindrical hole with single-side countersink (40°–60°) enables secure fastening with standard screws, while the standardised geometry simplifies replacement across matching toolholders and boring bars.

Predictable integration into existing tool systems

Designed as part of an ISO turning system, the indexable plate pairs with a matching external holder or boring bar, plus the usual clamping pad and replacement screws. This facilitates fast changeovers and simplifies inventory management for workshops that prioritise interchangeability. The universal, breakage-resistant character of the grade reduces the need for multiple specialised inserts, thereby lowering tooling complexity while maintaining quality of finish and process reliability in turning operations.

For turning applications that demand dependable performance, request a technical consultation or procurement assistance from Metav Werkzeuge — Metav Werkzeuge can advise on holder compatibility and supply original Tungaloy SPMT 120404 AH725 inserts; contact Metav Werkzeuge at info@metav-werkzeuge.com or call +49 2822 7131930.

Technical Data

• Article number: 6856789-Tungaloy
• Manufacturer article number: 6856789
• SKU: TUN6856789
• Manufacturer: Tungaloy
• Material: Carbide
• Grade/coating: AH725, PVD-coated
• Series: ISO‑Drehwendeschneidplatten
• Application: Turning

Numbers / Core technical data

• Size: 12 mm
• Thickness: 4.76 mm
• Corner radius: 0.4 mm
• Clearance angle: 11°
• Countersink angle: 40°–60°
• Insert geometry code: 120404
• Cutting edge angle: 90°

Special features / Versions

• Square insert form
• One-sided chipbreaker
• Cylindrical hole with single-side countersink
• Universal, breakage-resistant for steel and stainless steel
• Compatible with ISO‑standard holders and boring bars
• System includes insert, matching holder, clamping pad and screws for assembly

FAQ

What materials is this insert suitable for?
The SPMT120404 AH725 insert from Tungaloy is formulated as a universal, breakage-resistant grade and is suitable for machining steel and stainless steel in turning applications.

How does the AH725 grade affect tool life?
The AH725 PVD-coated carbide combines toughness with wear resistance to deliver predictable tool life under varied conditions, reducing unplanned edge failures and enabling longer runs between changes.

Which geometry details ensure correct clamping?
The ISO geometry with a cylindrical hole and single-side countersink (40°–60°) plus the standard dimensions guarantees secure clamping in compatible holders and consistent cutting performance for each indexed position.

Is the insert compatible with standard ISO toolholders?
Yes, the insert follows ISO‑standard dimensions (SPMT120404) and is intended for use with matching external holders or boring bars that accept the SPMT form.

What cutting conditions benefit most from this insert?
Applications with mixed workpiece materials or frequent tool changes benefit from the universal AH725 grade; the one-sided chipbreaker supports stable chip control, particularly in interrupted cuts or less rigid setups.

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.