SPMT 090304 AH725 Wendeplatten - Tungaloy

Benefit from the combination of a PVD-coated AH725 grade, a 0.4 mm corner radius and ISO-compliant geometry for reliable turning results; order the insert directly via Metav Werkzeuge or consult our advisers for process matching.

SPMT090304 AH725 ISO turning insert — square 90° geometry by Tungaloy

SPMT090304 AH725 is a square ISO turning insert designed for external and internal turning, offering a universal, fracture-resistant grade suited to steel and stainless steels.

• PVD-coated AH725 universal grade
• Square 90° geometry for versatile turning
• 0.4 mm corner radius for reliable edge strength
• Cylindrical hole with 40°–60° countersink

High-performance grade for consistent productivity

The insert features a PVD coating on a cemented carbide substrate which provides a balance between wear resistance and toughness. The AH725 grade is formulated as a universal, fracture-resistant option for machining both steel and stainless steels, making it suitable where workpiece materials vary or where toolholders are smaller and process security is paramount. Optimised for stable chip flow, the grade reduces the risk of premature edge failure and supports steady cutting conditions, translating into fewer interruptions and improved component throughput.

Geometry and clamping that ensure repeatable precision

A square 90° geometry combined with a 0.4 mm corner radius and 11° clearance angle delivers rigid support at the cutting edge, which helps maintain dimensional accuracy and surface finish during turning. The insert’s ISO designation ensures compatibility with standard holders when form, clearance, tolerance class, clamping and thickness are matched. The centrally located cylindrical hole with a one-sided countersink (40°–60°) secures repeatable clamping and indexability, enabling quick insert changes and consistent seat contact for serial production.

Practical application advice for longer tool life

Designed primarily for turning operations with a single-sided chipbreaker, this grade and geometry combination performs well for general roughing and finishing when cutting parameters are chosen according to workpiece material and stability. For best results, pair the insert with a suitable external holder or boring bar and select feed and speed that favour stable chip formation—this maximises the benefits of the AH725 grade and helps avoid edge chipping. If process conditions change frequently, the universal nature of the grade reduces the need for multiple tool inventories and simplifies tool management.

Discuss application matching with Metav Werkzeuge to select the ideal holder and cutting data for the SPMT090304 AH725 insert — Metav Werkzeuge provides technical consultation and fast supply.

Technical data

• Manufacturer article number: 6856787
• SKU: 6856787-Tungaloy
• Manufacturer SKU: TUN6856787
• Model series: ISO turning inserts
• Material: cemented carbide

Facts

• ISO designation: 090304
• Geometry: square, 09 size, 90°
• Corner radius: 0.4 mm
• Thickness: 3.18 mm
• Clearance angle: 11°
• Hole: cylindrical hole with one-sided countersink (40°–60°)

Special features

• Grade: AH725, PVD-coated carbide
• Chipbreaker: single-sided
• Typical application: external and internal turning
• Compatibility determined by form, clearance, tolerance, clamping, size and thickness

FAQ

What materials is this insert suitable for?
The SPMT090304 AH725 Tungaloy turning insert (SKU 6856787-Tungaloy) is a universal, fracture-resistant grade intended for machining steel and stainless steels; it performs well where material types vary.

Which operations are recommended for this insert?
This insert is designed for external and internal turning; the square 90° geometry and single-sided chipbreaker suit both roughing and finishing when matched with appropriate cutting data.

How does the 0.4 mm corner radius affect performance?
A 0.4 mm corner radius increases edge strength and improves resistance to chipping, which enhances process security and contributes to a more consistent surface finish during turning operations.

Is the insert compatible with standard ISO holders?
Yes — the SPMT090304 format is ISO-compliant; compatibility depends on matching holder form, clearance angle, tolerance class, clamping method, size and thickness.

What benefits does the PVD coating provide?
The PVD coating on the AH725 grade improves wear resistance while preserving toughness, supporting stable chip formation and extended cutting life under a range of turning conditions.

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.