SNMG120408-NMS WSM20S WSM20S Wendeplatten - Walter Tools

Take advantage of the combination of high thermal resistance, stable chip control and robust edge geometry for reliable production on stainless steels and superalloys; order the inserts via Metav Werkzeuge or contact the team for cutting-data recommendations.

SNMG120408-NMS WSM20S — indexable turning insert, Tiger·tec Silver, Walter Tools

SNMG120408-NMS WSM20S is a square 90° indexable turning insert designed for heavy-duty machining of stainless steels and heat-resistant superalloys with a coated carbide grade optimised for stable cutting and chip control.

Tiger·tec Silver coated grade WSM20S NMS chipbreaker for stable chip formation Square 90° insert with 0.8 mm corner radius Negative rake 0° for enhanced edge strength

Engineered for demanding materials and temperatures

The WSM20S grade of the Tiger·tec Silver family is a coated carbide solution developed for the challenges of machining stainless steel and superalloys. These workpiece groups tend to produce high temperatures and have a tendency to form built-up edge; the Tiger·tec Silver coating improves thermal resistance and reduces adhesion on the cutting edge, which in turn supports stable chip formation and consistent tool life. The result is fewer interruptions in the production flow and a more predictable process, which is particularly valuable in batch or continuous turning operations.

Geometry and edge strength for consistent component quality

The insert’s square 90° shape combined with a corner radius of 0.8 mm and a negative rake 0° geometry provides a robust cutting edge suitable for roughing and medium finishing. The NMS chipbreaker promotes short, controllable chips under heavy cross-sections, making coolant and chip evacuation more effective. The geometry choices balance edge stability with surface quality, so the insert supports productive metal removal while maintaining acceptable workpiece finishes on demanding alloys.

Process reliability, repeatability and mounting tolerances

Tolerance class M ensures consistent seating and repeatable positioning in standard toolholders, reducing variability between tool changes. The insert’s thickness designation 04 and form factor allow secure clamping and reliable heat dissipation from the cutting zone. This combination reduces the risk of unexpected tool failure and supports predictable tool-change intervals, which helps planners and operators maintain uptime and control production costs through improved process reliability.

Practical application guidance and handling notes

For best results with these inserts, pair the geometry with a rigid setup and select cutting data adapted to stainless steel or superalloys; moderate cutting speeds with adequate feed rates and an appropriate coolant strategy will promote chip control and protect the cutting edge. The insert is suited to a range of turning operations where heat resistance and stable chip formation are required. If further advice on speeds, feeds or toolholder selection is needed, the Metav Werkzeuge team can supply application-oriented recommendations and detailed cutting data.

For high-demand turning operations with stainless steels and superalloys, contact Metav Werkzeuge for availability and tailored cutting-data support for Walter Tools SNMG120408-NMS WSM20S inserts

Technical data

• Article number: SNMG120408-NMS-WSM20S-WALTER
• Designation: SNMG120408-NMS WSM20S
• Brand: Walter Tools
• Series: Tiger-tec Silver

Numbers / Core technical data

• Corner radius: 0.8 mm
• Insert size: 12
• Thickness code: 04
• Clearance / rake: 0° (negative)
• Insert form: Square 90°
• Tolerance class: M

Special features

• Coating / technology: Tiger·tec Silver
• Grade: WSM20S (coated carbide)
• Chipbreaker: NMS
• Applicable material groups: S / M (superalloys, stainless steels)
• Suitable for: rostfreier Stahl (stainless steel) processing

FAQ

What materials is this insert suitable for?
The SNMG120408-NMS WSM20S insert is designed primarily for stainless steels (M) and heat-resistant superalloys (S), offering improved thermal resistance and stable cutting on these groups.

How does the NMS chipbreaker affect machining?
The NMS chipbreaker promotes short, controllable chips and supports reliable evacuation, which improves process stability when using the SNMG120408-NMS WSM20S on demanding materials.

Why is a negative rake of 0° beneficial for this insert?
A negative rake 0° provides a stronger cutting edge and higher resistance to mechanical and thermal stress, extending edge life during heavy cuts with the SNMG120408-NMS WSM20S.

What does the corner radius of 0.8 mm mean for surface finish?
A 0.8 mm corner radius balances edge strength and finish quality, allowing productive material removal while maintaining acceptable surface integrity for many turning tasks.

Is the insert compatible with standard toolholders?
Yes; the insert’s tolerance class M and the SNMG120408 family form factor are compatible with standard clamping systems designed for SNMG inserts, ensuring repeatable seating.

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

Protected trademarks and trade names are the property of their respective owners and are mentioned here for explanation only. There is no affiliation between Metav Werkzeuge and the trademark holders; the offered item is an original new product from the manufacturer.