SCMT09T304-MM4 WSM20S MM4 Wendeplatten - Walter Tools

Take advantage of the Tiger·tec Silver grade and the MM4 chipbreaker for reliable chip control and extended tool life when machining stainless steels and heat‑resistant alloys; combine durability, consistent surface quality and simple indexable‑insert handling for efficient production. Order or request application advice via Metav Werkzeuge for fast procurement and tailored cutting parameters.

SCMT09T304-MM4 WSM20S — Square 90° indexable insert, Tiger·tec Silver, Walter Tools

The SCMT09T304-MM4 WSM20S is an indexable turning and boring insert designed for heavy machining of stainless steels and heat‑resistant superalloys, offering a robust square 90° form with a 0.4 mm corner radius.

Tiger·tec Silver coated carbide technology Optimised for stainless steels and superalloys Square 90° insert with 0.4 mm corner radius MM4 chipbreaker for stable chip control

Reliable performance for difficult-to-cut materials

The Tiger·tec Silver coating combined with the WSM20S grade provides enhanced wear resistance and temperature stability, which translates into longer tool life and fewer indexings during production cycles. Coated carbide chemistry and a coating architecture tuned to heavy machining improve chip formation and reduce adhesion tendencies typical of stainless steels and nickel‑based alloys. The practical effect is more consistent cycle times and lower tool consumption, supporting cost‑efficient machining without sacrificing component quality.

Stable geometry for consistent surface finish

A square 90° shape with a 0.4 mm corner radius delivers rigidity at the cutting edge and helps maintain dimensional stability on facing and profiling operations. This geometry reduces deflection under load and contributes to a predictable surface finish even when machining materials that tend to work‑harden. The tolerance class M ensures repeatable insert seating and interchangeability, which benefits shops aiming for reproducible part quality across multiple tool changes.

Efficient machining through controlled chips and clearance

The integrated MM4 chipbreaker is built for secure chip control in long, continuous cuts and semi‑finishing passes. Combined with a 7° clearance angle, the insert reduces rubbing and heat build‑up at the flank, improving cutting efficiency and extending edge life. The insert thickness T3 and size 09 are standard dimensions that enable straightforward integration into common indexable toolholders, keeping changeovers quick and maintenance effort low — a practical advantage for production environments.

Application scenarios and handling recommendations

This insert is particularly suited to turning and boring operations in demanding materials groups S and M (heat‑resistant alloys and stainless steels). Use the grade where thermal stability and edge robustness are priorities; adjust feeds and speeds conservatively during initial trials to confirm chip behaviour. The insert’s features favour heavy cuts followed by a finishing pass with modest feed rates to achieve the required surface quality while preserving edge integrity. For further application guidance or to verify compatibility with specific holders, Metav Werkzeuge can provide technical parameters and recommendations.

Contact Metav Werkzeuge today for tailored cutting data, compatibility checks and to source Walter Tools SCMT09T304-MM4 WSM20S inserts for robust stainless and superalloy machining

Technical data

• Article number: SCMT09T304-MM4-WSM20S-WALTER
• Type: Indexable turning/boring insert
• Series: Tiger·tec Silver
• Grade: WSM20S

Facts

• Clearance angle: 7°
• Corner radius: 0.4 mm
• Insert shape: Square 90°
• Insert size: 09
• Thickness: T3
• Tolerance class: M

Special features

• Chipbreaker: MM4
• Material suitability: S / M (heat‑resistant superalloys, stainless steels)
• Coating: Tiger·tec Silver coated carbide
• Typical application: Heavy machining and challenging materials

FAQ

Which materials are best suited for this insert?
The SCMT09T304-MM4 WSM20S insert and the WSM20S grade are optimised for group M (stainless steels) and group S (heat‑resistant superalloys and titanium), where edge stability and thermal resistance are required.

What benefits does the Tiger·tec Silver series provide?
Tiger·tec Silver coating enhances wear resistance and heat tolerance, enabling the insert to maintain a stable cutting edge and deliver more consistent results in demanding machining conditions.

How does the MM4 chipbreaker affect machining?
The MM4 chipbreaker promotes controlled chip formation and evacuation in continuous and semi‑continuous cuts, reducing the risk of built‑up edge and improving process reliability with the SCMT09T304-MM4 WSM20S insert.

Is this insert compatible with standard toolholders?
The insert follows common indexable dimensions (size 09, T3 thickness, square 90°) and is compatible with toolholders designed for SCMT‑type inserts; verify holder specifications for seat and clamping compatibility before use.

What machining strategy is recommended for initial trials?
Begin with conservative speeds and moderate feeds to observe chip behaviour and temperature; the WSM20S grade is designed for thermal stability, but setting appropriate parameters will extend tool life and ensure desired surface quality.

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

Protected trademarks and trade names are the property of their respective owners. Brand names and protected product names are mentioned solely for explanation; no affiliation exists between our company and the named brands. The offered item is an original, factory‑new product of the manufacturer (Walter Tools).