SNMG120408-MM5 WMP30G WMP30G Wendeplatten - Walter Tools

Benefit from the combination of the WMP30G Tiger·tec Gold coating, the MM5 chipbreaker, and a 0° negative rake with 0.8 mm corner radius for reliable machining of stainless steel under medium to robust conditions. Order the insert directly via Metav Werkzeuge or ask our consultants for application advice.

SNMG120408-MM5 WMP30G – Square 90° turning indexable insert, 0° negative rake, for stainless steel (Walter Tools)

The SNMG120408-MM5 WMP30G is a square 90° indexable insert designed for medium to robust turning operations on stainless steel, combining a Tiger·tec Gold coated grade with a dedicated MM5 chipbreaker for improved process stability.

• Tiger·tec Gold coated carbide grade WMP30G
• Square 90° form with 0.8 mm corner radius
• 0° negative rake for stable cutting edges
• Optimised chip control MM5 for stainless steel

Reliable performance for demanding stainless steel operations

The Tiger·tec Gold WMP30G grade is a coated carbide formulation engineered for the specific challenges of stainless steel: high toughness, tendency to form built-up edge and elevated cutting temperatures. The Tiger·tec Gold coating increases thermal resistance and wear behaviour, which translates into longer cutting life and fewer tool changes. In practical terms, the insert helps to maintain consistent component quality and reduces the risk of edge failure during medium to robust machining cycles, supporting higher machine utilisation and predictable throughput.

Geometry and edge strength that extend tool life

The insert’s square 90° form, combined with a 0.8 mm corner radius, provides a robust cutting edge that balances strength and surface finish. The 0° negative rake increases edge security in heavy cross-sections and interrupted cuts by reducing the effective rake angle and distributing cutting forces more favourably across the carbide substrate. This geometry also helps to avoid premature chipping in tougher stainless steel grades. The standard thickness designation ensures stable clamping and repeatable positioning in common turning toolholders, contributing to repeatable results and reduced rework.

Predictable chip control and process security on the shop floor

Chip formation is governed by the MM5 chipbreaker, which is optimised for the stringier chips typical of stainless steel. Controlled chip segmentation reduces the chance of entanglement and improves coolant access to the cutting zone, resulting in better surface integrity and fewer stoppages for chip clearing. Walter Tools’ series design and coating technology also support consistent edge integrity during longer production runs, improving overall process security and lowering the total cost of operation through extended intervals between indexings.

For applications involving stainless steel, request the SNMG120408-MM5 WMP30G Tiger·tec Gold insert from Metav Werkzeuge or contact the Metav technical team for tailored machining recommendations.

Technical Data

• Article number: SNMG120408-MM5-WMP30G-WALTER
• Designation: SNMG120408-MM5 WMP30G
• Product type: Turning indexable insert

Facts

• Corner radius: 0.8 mm
• Plate size: 12 mm
• Thickness designation: 04
• Free cutting angle: 0° (negative)

Special features

• Grade: WMP30G (Tiger·tec Gold, coated carbide)
• Chipbreaker: MM5
• Plate form: Square 90°
• Application: stainless steel
• Series: Tiger·tec Gold

FAQ

What materials is the insert suitable for?
The SNMG120408-MM5 WMP30G insert is optimised for stainless steel; the WMP30G grade and MM5 chipbreaker are selected to manage the heat and toughness typical of these materials.

How does the 0° negative rake affect cutting performance?
A 0° negative rake increases edge robustness and reduces the risk of chipping during heavy or interrupted cuts; the geometry of the SNMG120408-MM5 WMP30G supports secure cutting edges in demanding stainless steel applications.

Which chip behaviour can be expected with the MM5 chipbreaker?
The MM5 chipbreaker is designed for controlled segmentation when machining stringy stainless steel, improving evacuations and reducing chip-related interruptions with the SNMG120408-MM5 WMP30G insert.

Is the insert part of a coated carbide series?
Yes, the SNMG120408-MM5 WMP30G belongs to the Tiger·tec Gold series, a coated carbide range that enhances wear resistance and thermal stability in production environments.

What form and corner radius does the insert have?
The insert is a square 90° form with a 0.8 mm corner radius, offering a balance between edge strength and surface finish for turning operations.

Manufacturer/Responsible: Walter Deutschland GmbH; Derendinger Straße 53; 72072 Tübingen; Germany

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