TPMT 16T308 T505 Wendeplatten - Tungaloy

Take advantage of the combination of cost-effective material grade, dependable chip control, and straightforward ISO compatibility for smooth turning operations; order the inserts directly via Metav Werkzeuge or consult our advisors for tailored recommendations.

TPMT 16T308 T505 triangular turning insert for Turning — Tungaloy

The TPMT16T308-CM T505 is an ISO-standard triangular turning insert engineered for economical external and internal turning of cast iron with reliable chip control.

• ISO-standard triangular insert
• CVD-coated T505 grade
• Chipbreaker CM for cast iron
• 0.8 mm nose radius, 60° geometry

Economical, production-focused grade for cast-iron turning

This insert combines a CVD-coated carbide substrate with the T505 grade to deliver a balance of wear resistance and cost efficiency specifically for cast-iron work. The coating enhances thermal and abrasive resistance while maintaining cutting-edge stability, so productivity improves without sacrificing tool life. The chipbreaker CM is optimised for typical chip forms in grey and nodular cast iron, reducing interruptions and the need for secondary chip handling. As a result, cycle times are more predictable and process costs decrease.

Designed for straightforward integration into existing holders

The insert follows the ISO-standard TPMT geometry and a 60° included angle, so compatibility with suitable external holders and boring bars is determined by form, clearance, tolerance class, fastening and thickness. The 11° clearance and the triangular form allow stable clamping and indexing; the central hole with a cylindrical bore and a one-sided countersink (40°–60°) ensures secure fastening and repeatable positioning. These design choices make retrofitting or replenishing tooling straightforward, helping to minimise machine downtime.

Reliable cutting performance and surface quality

A 0.8 mm nose radius provides a good compromise between strength and surface finish for many turning operations on cast iron. The CVD coating and substrate combination offers stable edge life during continuous cuts and improved resistance to notch wear in interrupted cuts. The engineered chip control minimises built-up edge and supports consistent surface roughness, meaning fewer downstream finishing operations and improved throughput. For workshops prioritising repeatable results, this combination supports consistent component quality.

Practical selection and application advice

Choose this insert when machining cast iron where process stability and economic performance are priorities. The chipbreaker CM suits medium to heavy feeds and helps control chips when vibration is low; if machining conditions involve unstable setups or very fine finishing, consider a different nose radius or chipformer. The insert’s thickness of 3.97 mm and size 16 give a stable contact area, while the ISO designation TPMT16T308-CM simplifies selection from tooling lists. For best results, pair the insert with a matching external holder rated for the TPMT form and verify clamping torque and seat cleanliness before cutting.

Contact Metav Werkzeuge for a tailored recommendation on Tungaloy TPMT16T308-CM inserts, batch availability and application guidance via info@metav-werkzeuge.com or +49 2822 7131930

Technical data

• Article number: 6793676-Tungaloy
• Manufacturer article number: 6793676
• Manufacturer SKU: TUN6793676
• Model series: ISO turning indexable inserts
• Designation: TPMT16T308-CM T505

Facts

• Thickness: 3.97 mm
• Insert size: 16 mm
• Included angle: 60°
• Clearance angle: 11°
• Nose radius: 0.8 mm

Special features

• Material: Cemented carbide
• Coating: T505 (CVD)
• Chipbreaker: CM
• Shape: triangular
• Hole: with cylindrical hole + one-sided countersink (40°–60°)
• Application: Turning
• ISO designation: TPMT16T308-CM

FAQ

What materials is this insert best suited for?
The TPMT16T308-CM T505 insert is optimised for machining cast iron; the T505 grade and chipbreaker CM provide effective chip control and wear resistance for grey and nodular cast iron.

How does the chipbreaker influence performance?
The CM chipbreaker shapes chips for safe evacuation during turning; this reduces interruptions and improves process reliability when using the TPMT16T308-CM insert in stable setups.

Can the insert be used in existing ISO holders?
Yes, the ISO-standard geometry of the TPMT16T308-CM is compatible with holders designed for TPMT inserts, provided the holder matches form, clearance, thickness and fastening specifications.

What cutting results can be expected with a 0.8 mm nose radius?
A 0.8 mm nose radius offers a balance between edge strength and surface finish, delivering dependable roughing and semi-finishing performance with consistent surface quality on cast iron.

Is this insert suitable for interrupted cuts?
The combination of CVD-coated carbide and the T505 grade gives robust edge life for many interrupted cut scenarios, though final performance depends on workpiece rigidity and cutting parameters.

Manufacturer/Responsible: Tungaloy-NTK Germany GmbH, Katzbergstraße 3a, 40764 Langenfeld - Protected trademarks and product names are the property of their respective owners. Brand names and protected trademarks are mentioned solely for explanatory purposes. There is no affiliation between our company and the mentioned brands. The item offered is an original, brand-new product from the manufacturer.