SPMT 120408 AH6225 Wendeplatten - Tungaloy

Combining PVD-coated carbide durability with a 0.8 mm corner radius yields a robust insert that maintains a sharp edge during medium-duty machining of stainless steels; order the part directly via Metav Werkzeuge or consult the technical team for application-specific recommendations.

SPMT 120408 AH6225 — Tungaloy ISO turning insert (PVD-coated carbide, 0.8 mm radius)

A SPMT 120408 AH6225 insert designed for ISO-standard turning applications, optimised for medium machining of stainless steels with a stable cutting edge and one-sided chip control

• ISO square insert SPMT120408
• PVD-coated carbide AH6225
• 0.8 mm corner radius for edge stability
• One-sided chipbreaker, 11° relief angle

Efficient performance for stainless steel turning

The PVD-coated carbide AH6225 grade is developed as a universal option for stainless steels, balancing a sharp cutting edge with adequate toughness for changing conditions. This results in improved process stability and consistent surface finish when the machining setup is stable. The 0.8 mm corner radius reduces the risk of premature edge chipping under moderate depths of cut, while the coating supports wear resistance during interrupted cuts. For production environments that prioritise steady metal removal rates and predictable tool life, this grade offers a pragmatic compromise between productivity and tool longevity.

Reliable fit in ISO turning systems

Compatibility with an external holder is determined by form, relief angle, tolerance class, fastening, size and thickness; this ISO plate is supplied in a square form with an included angle of 90° and a relief angle of 11°, supporting straightforward integration into standard toolholders. The cylindrical hole with single-side countersink (40°–60°) ensures secure clamping and repeatable positioning when used with the appropriate shim and clamp set. As part of a complete system—insert, holder or boring bar, shim and replacement screws—the component facilitates rapid indexability and minimal downtime for insert changes, contributing to predictable production flow.

Practical guidance for everyday machining

Select the one-sided chipbreaker and grade to suit workpiece material, machining type and machine-tool stability: the chip control geometry aids chip flow in routine external and internal turning, while the 4.76 mm plate thickness and 12 mm size support robust clamping. The plate’s ISO designation simplifies procurement and setup checks; confirm holder compatibility against the plate’s dimensions and the listed tolerance class to avoid assembly issues. For operations with less rigid setups, choose a smaller feed or stabilised cutting parameters to exploit the AH6225 grade’s balanced edge integrity without risking edge fracture.

For availability, application advice or bulk supply of Tungaloy inserts such as the SPMT 120408 AH6225, contact Metav Werkzeuge for prompt technical support and order handling via info@metav-werkzeuge.com or call +49 2822 7131930.

Technical Data

• Article number: 6903321-Tungaloy
• Manufacturer article number: 6903321
• Manufacturer SKU: TUN6903321
• Model series: ISO-Drehwendeschneidplatten
• Material: carbide

Facts

• Corner radius: 0.8 mm
• Plate thickness: 4.76 mm
• Plate size: 12 mm
• Included angle: 90°
• Relief angle: 11°
• Countersink angle: 40°–60°

Special features

• PVD-coated carbide AH6225
• One-sided chipbreaker
• Square plate form (SPMT)
• Cylindrical hole with single-side countersink
• Application: turning
• Compatible with ISO holders, shims and clamp sets
• Optimised for stainless steels

FAQ

Which materials is this insert intended for?
The SPMT 120408 AH6225 is optimised for stainless steels; the AH6225 PVD-coated grade provides a balanced edge for medium-duty turning of such alloys.

How is clamping achieved and what hole style is required?
Clamping relies on the plate’s cylindrical hole with a single-side countersink (40°–60°), ensuring secure positioning when used with the correct shim, clamp set and replacement screws.

What factors determine holder compatibility?
Compatibility is governed by form, relief angle (11°), tolerance class, fastening method, plate size (12 mm) and thickness (4.76 mm); these must match the external holder or boring bar.

When should the one-sided chipbreaker be selected?
The one-sided chipbreaker is suitable for standard external and internal turning where controlled chip formation is required; choose the breaker to match material, feed and machine-tool rigidity.

Is the plate ISO-standard and how does that help procurement?
Yes, the insert follows ISO designation SPMT120408, which simplifies selection, ordering and interchangeability across ISO-compatible holders and systems.

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.