P2840S-4N-A57 WKP25S Wendeplatten - Walter Tools Technical data: - coating: Tiger·tec Silver - material: coated carbide - suitable for steel (P) - suitable for cast iron (K) - series: Tiger-tec Silver - grade: WKP25S - geometry/spanbreaker: 4N-A57

Take advantage of the combination of Tiger·tec Silver coating and the WKP25S grade for extended tool life and consistent chip control; the 4N‑A57 chipbreaker further improves machining stability. Order the insert directly via Metav Werkzeuge or request application advice from our consultants.

P2840S-4N-A57 WKP25S — indexable drilling/boring insert for steel and cast iron | Walter Tools

P2840S-4N-A57 WKP25S is an indexable cutting insert engineered for drilling and bore-enlargement operations in steel and cast iron applications

• Tiger·tec Silver coating for longer tool life
• WKP25S grade optimised for steel and cast iron
• 4N‑A57 chipbreaker for controlled chip formation
• Designed for high-productivity drilling operations

Consistent life and reduced tool costs on the shop floor

The combination of Tiger·tec Silver coating and the WKP25S cutting grade delivers a balance of wear resistance and toughness that reduces flank and crater wear during production runs. This indexable insert is formulated for the thermal and mechanical demands of machining steel and cast iron, which means fewer interruptions for tool changes and a lower cost per hole. The result is a more predictable process window and reduced variance in batch production.

Reliable chip control and improved surface results

The 4N‑A57 chipbreaker geometry is designed to produce short, controllable chips when machining materials in the ISO groups P and K, limiting the risk of tangled swarf and tool damage. Controlled chip formation supports consistent surface finish and dimensional repeatability, which is particularly important in tight-tolerance drilling and bore-enlargement tasks. The geometry also helps evacuate chips efficiently at typical cutting speeds for these material classes.

Built for productivity and easy integration

As an indexable solution, this insert simplifies tool management: individual edges can be rotated or replaced without changing the tool body, reducing downtime. The insert’s properties are tuned for demanding, high-productivity environments where cycle time and reliable edge life are critical. Compatibility with common drill and boring holders makes retrofitting straightforward, helping to maintain process stability while increasing output rates.

Guidance for selection and practical use

When choosing this insert, consider the workpiece material and the intended cutting parameters: the WKP25S grade is tailored for usual steel and cast iron machining conditions and performs best with appropriate feeds and coolant strategies for the material. For less experienced teams, the insert’s ISO-based suitability (P/K) simplifies specification and reduces the chance of mismatched tooling. For application-specific recommendations or cutting-data settings, the manufacturer’s data sheet and Metav Werkzeuge’s advisors can provide targeted guidance.

Contact Metav Werkzeuge for tailored application support or availability enquiries — email info@metav-werkzeuge.com or call +49 2822 7131930 for a direct consultation and ordering assistance

Technical data

• Article number: P2840S-4N-A57-WKP25S-WALTER
• Designation: P2840S-4N-A57 WKP25S
• Series: Tiger·tec Silver
• Grade: WKP25S
• Chipbreaker: 4N‑A57
• Material suitability: P / K

Facts

• Applicable material groups: Steel (P), Cast iron (K)
• Product type: Indexable drilling/boring insert
• SKU: P2840S-4N-A57-WKP25S-WALTER

Special features

• Coating technology: Tiger·tec Silver
• Cutting material: Coated carbide insert
• Optimised for controlled chip formation
• Suited to high-productivity drilling and boring

FAQ

How does the Tiger·tec Silver coating influence performance?
The Tiger·tec Silver coating on the P2840S-4N-A57 WKP25S insert increases wear resistance and heat management, extending edge life under typical steel and cast iron cutting conditions.

Which materials are recommended for this insert?
This indexable insert is recommended for the ISO material groups P (steel) and K (cast iron), reflecting the WKP25S grade’s suitability for these workpiece types.

What benefit does the 4N‑A57 chipbreaker provide?
The 4N‑A57 chipbreaker produces short, controlled chips that ease evacuation and improve surface finish during drilling and bore-enlargement operations with the P2840S-4N-A57 WKP25S insert.

Is this insert compatible with standard drill or boring holders?
Yes, the insert is an indexable type designed for use in compatible drill and boring tool bodies, enabling quick edge changes and reduced machine downtime.

Where can cutting-data recommendations be obtained?
Cutting-data and application recommendations for the P2840S-4N-A57 WKP25S insert can be provided by Walter Tools documentation and Metav Werkzeuge’s technical advisors for specific material and machine conditions.

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

Protected trademarks and trade names are the property of their respective owners. Brand names and protected designations are mentioned for explanatory purposes only; there is no affiliation between our company and the mentioned brands. The offered item is an original, factory-new product of the manufacturer (Walter Tools).