SCMT120408-MM4 WMP20S Wendeplatten - Walter Tools

Benefit from the combination of Tiger‑tec Silver coating, the WMP20S grade tailored for stainless steel and a precise 0.8 mm corner radius to secure stable chip formation and consistent surface quality; order through Metav Werkzeuge or consult their technical advisors for application-specific recommendations.

SCMT120408-MM4 WMP20S – square 90° turning insert, Tiger‑tec Silver for stainless steel (Walter Tools)

The SCMT120408-MM4 WMP20S is a square 90° indexable turning insert designed for robust machining of stainless steel, offering controlled chip formation and extended edge life in medium to heavy cutting conditions.

• Tiger‑tec Silver coated grade WMP20S
• Optimised for stainless steel machining
• 90° square insert with 0.8 mm corner radius
• 7° relief angle for secure chip formation

Faster, more reliable stainless steel turning for higher throughput

The combination of the Tiger‑tec Silver coating with the WMP20S carbide grade provides a balance of wear resistance and toughness that is especially beneficial when machining stainless steel. The coating reduces the tendency for built‑up edge and improves thermal resistance, which helps to maintain a stable cutting edge under the higher friction and heat typical of austenitic stainless grades. This results in fewer interruptions for insert changes and a measurable increase in effective machine time, supporting more consistent production output.

Geometry engineered to improve surface finish and process security

A 90° square form and a 0.8 mm corner radius create a cutting geometry that reduces vibration and produces a predictable cutting force, which directly contributes to improved part finish and dimensional stability. The 7° relief angle helps avoid rubbing and supports reliable chip evacuation. The MM4 chipbreaker is tuned to form shorter, controllable chips during interrupted cuts and when working tougher stainless alloys, reducing the risk of entanglement and minimising secondary finishing work.

Practical advantages that lower total machining cost

Using an indexable insert from the Tiger‑tec Silver series offers practical benefits on the shop floor: predictable tool life, straightforward insert indexing and reduced scrap rates thanks to consistent edge behaviour. The SCMT120408-MM4 WMP20S supports medium to heavy feed strategies without compromising surface quality, which can shorten cycle times and improve per‑part cost efficiency. The insert’s design also simplifies process planning for boring and turning operations, enabling safer feeds and speeds windows and fewer trial passes in production setups.

For reliable stainless steel turning with Walter Tools' Tiger‑tec Silver grade, request availability from Metav Werkzeuge or ask their technical advisors for tailored cutting data and batch supply options

Technical data

• Article number: SCMT120408-MM4-WMP20S-WALTER
• Designation: Turning / boring indexable insert SCMT120408-MM4 WMP20S Walter Tools

Facts

• Insert size: 12 mm
• Corner radius: 0.8 mm
• Relief angle: 7°
• Thickness code: 04

Special features

• Coating: Tiger‑tec Silver
• Grade: WMP20S (coated carbide)
• Chipbreaker: MM4
• Form: Square 90°
• Suitable material group: stainless steel (ISO group M)
• Series: Tiger‑tec Silver
• Manufacturer: Walter Tools

FAQ

What materials is this insert suitable for?
The SCMT120408-MM4 WMP20S insert is designed for stainless steel (ISO group M) applications and performs well under medium to robust cutting conditions.

How does the Tiger‑tec Silver coating help in practice?
The Tiger‑tec Silver coating increases thermal resistance and reduces built‑up edge formation on the WMP20S grade, which helps to preserve the cutting edge and extend effective tool life during stainless steel machining.

What is the benefit of the 0.8 mm corner radius?
A 0.8 mm corner radius balances edge strength and surface finish: it reduces stress concentration at the cutting edge, improves stability in heavier cuts and supports a consistent finish on turned components.

Can this insert be used for interrupted cuts?
Yes, the MM4 chipbreaker and the insert geometry provide controlled chip formation suitable for interrupted turning and common machining interruptions found in stainless steel operations.

Which operations is this insert intended for?
This indexable insert is intended for turning and boring operations where a 90° square insert is required, offering predictable geometry for facing, turning and light profiling tasks.

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 mentioned brands. The offered item is an original, factory‑new product from the stated manufacturer.

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