SPMT 120404 T515 Wendeplatten - Tungaloy

Reliable, CVD‑coated carbide in grade T515 combined with a single‑sided chipbreaker delivers efficient, repeatable turning of cast iron while maintaining surface quality and tool life. Order the insert directly via Metav Werkzeuge or consult our specialists for selection and stocking recommendations.

SPMT 120404 T515 — Turning insert (Tungaloy)

The SPMT120404 T515 is an ISO‑standard square turning insert designed for economical and stable machining of cast iron in external and internal turning operations.

• CVD-coated carbide for cast iron
• Square 12 mm size with 0.4 mm corner radius
• Single-sided chipbreaker for stable chip control
• ISO 120404 form with 11° relief and 4.76 mm thickness

Consistent chip control and material‑specific performance

The ISO‑form insert is optimised for predictable metal removal in cast‑iron applications. The CVD‑coated cemented carbide grade T515 provides a balanced combination of wear resistance and edge stability, enabling longer cycles between indexings. The integrated chipbreaker geometry promotes broken chips even at higher feed rates, which reduces interruptions and supports steady part quality. With an 11° clearance and a 0.4 mm corner radius, the geometry is tuned to resist edge chipping while delivering a fine surface finish on interrupted or steady cuts.

Clear compatibility and secure clamping for reproducible results

As an ISO‑standard insert, compatibility depends on holder form, clearance angle, tolerance class, fastening method, size and thickness. The square 12 mm insert and 4.76 mm plate thickness suit a broad range of external holders and boring bars; the cylindrical hole with single‑side countersink (40°–60°) ensures accurate seating and positive clamping. This repeatable clamping interface reduces vibrations and improves process stability, which in turn extends tool and holder life and supports consistent dimensional accuracy across production batches.

Production advantages: economy, productivity and easy integration

Choose the T515 grade and the single‑sided chipbreaker for a cost‑effective balance between tool life and cutting speed in cast‑iron machining. The square shape gives four usable edges per insert, lowering per‑edge cost and simplifying inventory management. The modest corner radius improves edge strength without compromising finish, so fewer rework cycles are needed. Where machining stability is limited or cuts are heavily interrupted, this insert type helps maintain cycle times and surface quality, supporting higher overall productivity and predictable process windows.

Contact Metav Werkzeuge to discuss how the Tungaloy SPMT120404 T515 insert can optimise cast‑iron turning in your setup and to request availability or technical guidance

Technical Data

• Article number: 6747832
• SKU: 6747832-Tungaloy
• Manufacturer SKU: TUN6747832
• Model series: ISO-Drehwendeschneidplatten
• Material: Cemented carbide

Facts

• ISO designation: 120404
• Size: 12 mm
• Thickness: 4.76 mm
• Corner radius: 0.4 mm
• Relief angle: 11°
• Included angle: 90°

Special features

• Grade: T515
• Coating: CVD
• Single-sided chipbreaker
• Square insert form
• Cylindrical hole with single‑side countersink (40°–60°)
• Suitable for external and internal turning of cast iron
• System components: compatible holder, shim/clamp set and replacement screws

FAQ

Which materials is this insert best suited for?
The Tungaloy SPMT120404 T515 insert is formulated primarily for economical machining of cast iron; the T515 grade and CVD coating aim to provide wear resistance and stable cutting behaviour in such materials.

How is the insert clamped in the toolholder?
Clamping relies on the ISO‑form seating and the cylindrical hole with single‑side countersink (40°–60°); the design ensures a positive fit in compatible square insert holders and boring bars for reproducible positioning.

What benefit does the single‑sided chipbreaker offer?
The single‑sided chipbreaker on this insert is engineered to fracture and control chips during turning, which improves process reliability and reduces the risk of chip entanglement in cast‑iron operations with the SPMT120404 T515 insert.

How many cutting edges are available per insert and how does the corner radius affect results?
The square insert form provides four usable cutting edges. The 0.4 mm corner radius balances edge strength and surface finish, reducing the likelihood of edge chipping while delivering acceptable part quality.

Can this insert be used for interrupted cuts?
Yes — the T515 grade and robust geometry make the insert suitable for interrupted machining conditions, though final selection should consider machine stability and fixture rigidity for the best outcome.

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.