SNMG 120408 T5115 Wendeplatten - Tungaloy

Take advantage of the combination of ISO compatibility, a wear-resistant CVD-coated carbide grade and secure clamping for reliable turning of cast iron components. Order the SNMG 120408 T5115 turning insert directly via Metav Werkzeuge or ask our consultants if needed.

SNMG 120408 T5115 Tungaloy turning insert — CVD-coated carbide, 0.8 mm corner radius

SNMG 120408 T5115 is an ISO-format turning indexable insert designed for external and internal turning, offering a universal grade optimised for cast iron machining.

• CVD-coated carbide for extended tool life
• Universal grade for cast iron machining
• ISO SNMG 120408 format, 90° geometry
• 0.8 mm corner radius, cylindrical hole

Predictable, ISO-compliant fit for consistent production

The SNMG 120408 designation ensures compatibility with ISO-standard holders when the correct form, relief angle, tolerance class, fixing method, size and thickness are matched. This predictability reduces setup time and variation between tool changes. The square plate format and cylindrical locating hole provide stable clamping and repeatable positioning, helping to maintain dimensional consistency across batches. For production environments where changeover speed and repeatability matter, the standardised interface translates directly into higher process reliability.

Balanced grade for cast iron with clear benefits

The T5115 grade is a CVD-coated carbide developed as a universal solution for cast iron, combining good wear resistance with cutting-edge edge stability. The chemical vapour deposition layer provides a hard, wear-resistant outer surface while the substrate maintains toughness; this balance reduces flank and crater wear during interrupted cuts and when machining abrasive iron grades. Selecting this grade and the double-sided chipbreaker helps achieve stable chips and good surface finish with lower flank wear rates compared with uncoated options.

Geometry and handling that improve tool life and machining quality

Key geometrical data — including a 0.8 mm corner radius, 90° included angle and a zero-degree relief — influence cutting forces and edge strength. The modest corner radius increases edge robustness for heavier feeds while still enabling fine finishing when required. The plate thickness of 4.76 mm and the 12 mm plate size yield a rigid cutting edge when mounted in a suitable external holder or boring bar, supporting stable cutting conditions and reduced vibration. Choosing the correct chipbreaker style and matching it to the workpiece and machining stability minimises rework and extends indexable insert life.

System approach and application guidance for secure use

An effective tool system comprises the insert, a matching external holder or boring bar, a clamping shim or clamp set, and replacement screws. The insert is double-sided and reversible, offering economical use of both cutting edges. Typical uses include external and internal turning of cast iron components, where the combination of CVD coating and the T5115 substrate provides a good compromise between wear resistance and edge retention. For optimal performance, select the chipbreaker and cutting parameters according to material, operation and the machine's rigidity; this approach pays off through longer life and consistent part quality.

For application-specific recommendations or to source genuine Tungaloy SNMG 120408 T5115 inserts, contact Metav Werkzeuge — experts can advise on holder compatibility, chipbreaker choice and cutting data to match the machining task and equipment.

Technical data

• Article number: 6850250-Tungaloy
• Manufacturer SKU: TUN6850250
• Manufacturer article number: 6850250
• Label: SNMG120408 T5115 Tungaloy-Wendeplatte
• Material: Hartmetall
• Model series: ISO-Drehwendeschneidplatten

Numbers / Core technical data

• Plate designation: SNMG 120408
• ISO code: 120408
• Plate size: 12 mm
• Plate thickness: 4.76 mm
• Corner radius: 0.8 mm
• Relief angle: 0°
• Included angle: 90°

Designs / Special features

• Coating: CVD-coated carbide
• Grade: T5115 (universal for cast iron)
• Chipbreaker: double-sided
• Hole: with cylindrical hole
• Plate shape: square
• Typical application: external and internal turning
• System components: insert, holder/boring bar, shim/clamp set, replacement screws

FAQ

What materials is this insert suited for?
The T5115 grade is formulated primarily for machining cast iron; the SNMG 120408 insert delivers a balance of wear resistance and edge stability for that application.

How is the insert clamped in the holder?
The square shape with a cylindrical hole requires a compatible ISO holder with the correct locating pin and clamping system to ensure repeatable positioning and secure fastening.

Can both sides of the insert be used?
Yes, the insert is double-sided, offering two indexed cutting edges and improving economy per insert when edges are re-sharpened for disposal or recycling.

What advantages does the CVD coating provide?
The CVD coating forms a hard surface layer that increases resistance to abrasive wear while the carbide substrate maintains toughness, reducing edge chipping and extending usable life in interrupted cuts.

How to choose the right chipbreaker and parameters?
Select the chipbreaker and cutting data based on the cast iron grade, operation (roughing or finishing) and machine stability; Metav Werkzeuge can advise on matching chipbreakers and optimal parameters for consistent results.

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.