SPGT09T308-MM4 WSM20S WSM20S Wendeplatten - Walter Tools

Take advantage of the combination of Tiger·tec Silver coating and the WSM20S grade for reliable chip control and extended edge life when machining stainless steels and heat‑resistant alloys; order the insert through Metav Werkzeuge or consult their specialists for application support.

SPGT09T308-MM4 WSM20S indexable turning insert — Walter Tools (Tiger·tec Silver, for stainless steels and superalloys)

The SPGT09T308-MM4 WSM20S is a square indexable insert for external turning, engineered for demanding cuts in stainless steels and heat‑resistant superalloys

• Tiger·tec Silver coated carbide grade WSM20S
• Square insert 90° with 0.8 mm corner radius
• Designed for stainless steels and superalloys

High‑temperature performance for tough materials

The coated carbide WSM20S grade, part of the Tiger·tec Silver series, is formulated to handle materials that generate heat and resist chip flow. For applications in stainless steels and superalloys, the combination of coating technology and substrate hardness promotes stable chip formation and helps prevent edge build‑up. This yields more consistent cutting forces and reduces the risk of unexpected rework, supporting an efficient production flow. The result is a measurable improvement in process stability under challenging conditions.

Geometry that ensures repeatable results and surface quality

The square, 90° insert geometry with a 0.8 mm corner radius provides a robust cutting edge and uniform engagement in turning operations. A clearance angle of 11° improves shear conditions and reduces rubbing on the flank, which supports improved surface finishes and predictable tool behaviour. The insert's tolerance class G and T3 thickness specification contribute to repeatable seating and reliable clamping, so tool changes remain quick and machine set‑up stays consistent — important factors when repeatability and uptime matter.

Application advantages and economic impact

Equipped with the MM4 chipbreaker, this insert is tuned for controlled chip formation across a range of feeds, helping to avoid tangling and simplifying chip evacuation. That control translates into fewer interruptions at the machine and a longer effective tool life, which together lower unit machining costs. For workshops seeking a balance of process reliability and productivity when machining demanding alloys, this insert offers a pragmatic route to reduced tooling consumption and steadier cycle times. For material‑specific recommendations, practical test cuts are advised and Metav Werkzeuge can assist in selecting cutting data matched to the component and machine.

Contact Metav Werkzeuge for expert application advice on Walter Tools Tiger·tec Silver inserts, including recommended cutting data for stainless steels and superalloys — eMail info@metav-werkzeuge.com or call +49 2822 7131930

Technical Data

• Article number: SPGT09T308-MM4-WSM20S-WALTER
• Product type: Indexable turning insert
• Brand: Walter Tools
• ISO designation: SPGT09T308-MM4 WSM20S
• Series: Tiger·tec Silver
• Grade: WSM20S
• Variant/execution: T

Dimensions & Key Values

• Relief angle: 11°
• Corner radius: 0.8 mm
• Insert size: 09
• Shape: Square 90°
• Tolerance class: G
• Plate thickness: T3

Materials & Applications

• Coating: Tiger·tec Silver
• Chipbreaker: MM4
• Suitable for: stainless steels (M)
• Also suitable for: heat‑resistant superalloys and titanium (S)
• Recommended use: external turning, demanding cutting conditions

FAQ

What materials is this insert intended for?
The SPGT09T308-MM4 WSM20S insert is engineered primarily for stainless steels and heat‑resistant superalloys, offering controlled chip formation and thermal resistance for those groups.

How does the Tiger·tec Silver coating benefit machining?
The Tiger·tec Silver coating on the WSM20S grade increases wear resistance and thermal stability, which helps maintain a sharp cutting edge longer when machining tough alloys.

What does the MM4 chipbreaker provide in practice?
The MM4 chipbreaker promotes consistent chip control across a range of feeds, reducing the likelihood of chip entanglement and aiding safe chip evacuation at the workplace.

Is the insert suitable for finishing operations?
Yes — the combination of the 0.8 mm corner radius and the square 90° geometry supports stable cutting conditions that can achieve good surface quality in finishing passes when appropriate feeds and speeds are applied.

Manufacturer: Walter Deutschland GmbH, Derendinger Straße 53, 72072 Tübingen, Germany

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