SPMT 090304 AH6225 Wendeplatten - Tungaloy

Take advantage of the PVD-coated AH6225 grade and the 90° square geometry to achieve consistent results in medium turning of stainless steels; the sharp yet stable cutting edge reduces regrinds and keeps cycle times predictable. Order the insert directly via Metav Werkzeuge or consult the team for help selecting the matching holder and clamping kit.

SPMT090304 AH6225 Tungaloy turning insert — PVD-coated cemented carbide, ISO square 90°

The SPMT090304 AH6225 is an ISO-standard square indexable insert for external and internal turning, engineered for reliable machining of stainless steels and medium cutting conditions.

• PVD-coated AH6225 carbide for stainless steels
• Square ISO insert, 90° geometry, 0.4 mm nose radius
• Cylindrical hole with 40°–60° countersink
• Designed for external and internal turning operations

Reliable edge performance for stainless-steel turning

The combination of a PVD-coated surface and a cemented carbide substrate in grade AH6225 provides a balance between a sharp cutting edge and robust edge stability. This results in consistent surface finish and extended intervals between indexings when machining stainless steel under varying conditions. The coating reduces adhesive wear and helps to maintain a defined cutting edge geometry, which is particularly important when tackling work-hardened or abrasive stainless alloys; this translates directly into fewer interruptions on the shop floor and improved process stability.

Geometry and mounting that simplify set-up

The 90° square shape and a 0.4 mm nose radius promote axial rigidity and allow reliable shoulder and facing operations with reduced vibration. The insert’s 11° relief angle and 3.18 mm thickness are matched to ISO norms, so selection of a compatible holder is straightforward provided form, relief angle, tolerance class, fastening, size and thickness are observed. The cylindrical hole with a 40°–60° one-sided countersink ensures secure clamping and repeatable seating, reducing the need for re-adjustment after replacement and lowering set-up time across production runs.

Chip control and application flexibility

Equipped with a single-sided chipbreaker, the insert manages chip flow for a wide range of cutting parameters, helping to reduce heat concentration and protect the cutting edge. The chipbreaker and grade are chosen to suit turning operations—both external and internal—so the insert can perform in semi-finishing and medium-machining tasks. As part of a system that includes a matching holder or boring bar, a shim/clamping set and replacement screws, the component supports predictable process outcomes and easier tool management in batch production.

Coating and grade benefits for productivity

The PVD coating on the AH6225 grade enhances hardness at the cutting edge and improves resistance to built-up edge formation, which is common in stainless-steel machining. This results in more consistent tool life and a stable cutting force profile over time. For operations where repeatability and surface integrity matter, the coated carbide delivers a balance of wear resistance and edge toughness that supports sustained productivity without frequent reconditioning.

Contact Metav Werkzeuge for tailored advice on selecting the right ISO turning insert, holder and clamping components for specific stainless-steel applications — expert support available via info@metav-werkzeuge.com or by phone at +49 2822 7131930

Technical data

• Article number: 6903310
• Manufacturer SKU: TUN6903310
• SKU: 6903310-Tungaloy
• Label: SPMT090304 AH6225 Tungaloy-Wendeplatte
• Brand: Tungaloy

Facts

• Included angle: 90°
• Nose radius: 0.4 mm
• Relief angle: 11°
• Thickness: 3.18 mm
• Size: 09
• Countersink: 40°–60°

Special features

• PVD-coated cemented carbide grade AH6225
• Single-sided chipbreaker
• ISO-standard square insert
• With cylindrical hole and one-sided countersink
• Suitable for stainless steel applications
• System components: insert, holder/boring bar, shim/clamping set, replacement screws

FAQ

Is this insert suitable for machining stainless steel?
Yes. The AH6225 PVD-coated cemented carbide grade is designed for reliable performance in stainless-steel turning; the SPMT090304 AH6225 (SKU TUN6903310) balances a sharp cutting edge with edge stability for medium machining.

Which holders will work with this ISO insert?
Compatibility depends on holder form, relief angle, tolerance class, fastening method, size and thickness. Use holders specified for ISO square SPMT inserts and verify the 11° relief and 3.18 mm plate thickness match the holder specifications.

What operations is the insert intended for?
The insert is intended for external and internal turning, including facing and shoulder work, and is optimised for medium cutting conditions and variable machining scenarios.

How does the single-sided chipbreaker affect performance?
A single-sided chipbreaker controls chip shape and evacuation, reducing heat concentration at the cutting edge and improving machining stability for semi-finishing and medium-cut applications.

Can this insert provide a good surface finish?
Yes. The 0.4 mm nose radius combined with the PVD coating and stable geometry supports consistent surface integrity, particularly when cutting parameters are set for finishing or light semi-finishing passes.

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.