CCMT09T308-MM4 WMP30G MM4 Wendeplatten - Walter Tools

Take advantage of the combination of proven chip control, robust edge stability and the Tiger·tec Gold coating for consistently productive stainless steel machining; order this insert directly via Metav Werkzeuge or consult our specialists for tailored recommendations.

Drilling and turning indexable insert CCMT09T308-MM4 WMP30G for stainless steel – Walter Tools

The CCMT09T308-MM4 WMP30G is a rhombic 80° indexable insert engineered for medium to heavy-duty machining of stainless steels, offering reliable chip formation and repeatable edge life.

• Tiger·tec Gold coating for process security
• Optimised MM4 chipbreaker for stable chips
• Rhombic 80° geometry, 0.8 mm corner radius
• Suitable for stainless steel machining

Increased productivity through stable chip control

The Tiger·tec Gold series grade delivers a combination of a high-performance coating and a wear-resistant substrate that together promote stable chip formation when cutting austenitic and other stainless steels. The integrated MM4 chipbreaker is designed to control chip flow at moderate to robust cutting parameters, which reduces interruptions for chip evacuation and minimises the risk of built-up edge. For production environments seeking higher throughput, this translates into fewer tool changes and a smoother process window without sacrificing surface quality.

Reliable edge life and geometry for demanding operations

The insert’s rhombic 80° shape with a 0.8 mm corner radius provides versatility between finishing and semi-finishing passes while the 7° clearance angle helps to reduce rubbing and heat generation at the cutting zone. These geometry choices support consistent contact conditions and reduce mechanical stress on the cutting edge, delivering improved tool life in tougher stainless steel grades. The nominal plate size and thickness mean stable seating in standard CCMT toolholders, helping to maintain reproducible results across batches.

Simple specification and secure material match

Specified as a coated carbide grade developed for material group M, the WMP30G designation indicates a Walter-developed solution optimised for stainless steel machining challenges, such as stickiness and work hardening. The insert is supplied in the ISO-style designation CCMT09T308-MM4, enabling straightforward selection against tooling data sheets and ensuring compatibility with common turning and drilling-holder systems. The robust indexable design supports predictable performance in series production and single-piece flow alike.

Coating, substrate and application explained

The Tiger·tec Gold technology combines a layered PVD/CVD-coated surface with a substrate tuned to resist crater wear and flank degradation. In practical terms, the coating reduces friction and thermal loading while the substrate sustains cutting-edge stability under intermittent loads typical in stainless steel operations. For workshops that run mixed lots or face variable material batches, this insert offers a balance of reliability and economy, reducing scrap risk and stabilising process capability indicators.

Practical handling and tooling considerations

The insert’s T3 thickness and CCMT format are compatible with standard tool clamps for turning and certain drilling/reaming adaptors; the rhombic form is suitable where approach angles and tool overhang vary. When paired with correctly selected cutting data for stainless steels, the combination of MM4 chip control and Tiger·tec Gold coating helps to maintain target surface finishes without excessive cycle-time increases. For optimisation support, Metav Werkzeuge can provide cutting data examples and selection advice for holder and grade pairing.

Contact Metav Werkzeuge today at info@metav-werkzeuge.com or by phone on +49 2822 7131930 to discuss the CCMT09T308-MM4 WMP30G and secure the best inserts for stainless steel machining in specific applications

Technical data

• Article number: CCMT09T308-MM4-WMP30G-WALTER
• Designation: CCMT09T308-MM4 WMP30G
• Manufacturer: Walter Tools

Facts

• Series: Tiger-tec Gold
• Grade: WMP30G
• Plate form: Rhombus 80°
• Plate size: 09
• Plate thickness: T3
• Corner radius: 0.8 mm
• Clearance angle: 7°
• Chipbreaker: MM4
• Material group: M (stainless steel)

Special features

• Coated carbide grade optimised for stainless steel
• Designed for stable chip formation in medium to robust conditions
• Rhombic geometry for versatile turning and drilling use
• Standard CCMT format for common toolholders
• Walter Tools original product

FAQ

What materials is this insert intended for?
The CCMT09T308-MM4 WMP30G is formulated for machining stainless steel (material group M) and performs best under medium to robust cutting conditions typical for these alloys.

What does the MM4 chipbreaker do?
The MM4 chipbreaker on the CCMT09T308-MM4 promotes consistent chip control and curl when machining stainless steel, reducing entanglement and improving process reliability.

Can the insert be used in standard CCMT toolholders?
Yes, the ISO designation CCMT09T308-MM4 indicates compatibility with standard CCMT-format holders commonly used for turning and certain drilling/reaming adaptors.

How does the Tiger·tec Gold coating benefit production runs?
Tiger·tec Gold provides a low-friction, wear-resistant surface that reduces thermal loading and helps maintain flank and crater wear resistance, thereby extending effective tool life in serial production.

What geometry features support surface finish and tool life?
The rhombic 80° form combined with a 0.8 mm corner radius and a 7° clearance angle helps to balance cutting forces and heat generation, supporting consistent surface quality and longer edge life.

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