CNMG 120404 GT9530 Wendeplatten - Tungaloy

Benefit from the combination of a coated cermet GT9530, a 0.4 mm corner radius and ISO CNMG geometry for reliable finishing and extended tool life; order the insert via Metav Werkzeuge or ask our consultants for application advice.

CNMG120404 GT9530 – Indexable turning insert, coated cermet, 0.4 mm radius (Tungaloy)

A CNMG120404 GT9530 indexable insert for turning, optimised for finishing to light universal turning of steel where surface quality and longer tool life under stable conditions are required

• Coated cermet GT9530 for extended tool life
• 0.4 mm corner radius for fine surface finish
• ISO CNMG 120404 geometry for broad compatibility
• Double-sided with cylindrical hole for secure clamping

Consistent finishes and extended tool life

The coated cermet grade GT9530 is designed as a wear-resistant finishing to light universal grade for turning of steel. As a coated cermet, it combines a hard ceramic phase with a metallic binder to deliver improved flank wear resistance and a fine surface on workpieces. In practice, this means fewer interruptions for regrinding and a more predictable lifespan under stable machining conditions. The grade supports operators who prioritise surface integrity and process stability over aggressive roughing, delivering a balance between surface quality and productive cutting intervals.

Geometry and clamp compatibility for reliable performance

The insert's ISO geometry—CNMG 120404 with an 80° diamond outline—ensures compatibility across a wide range of external holders and boring bars, provided the form, relief angle, tolerance class, attachment and thickness match the clamping system. The listed 0° relief angle requires appropriate holder clearance to prevent rubbing; relief angle (free angle) refers to the flank clearance between insert and workpiece that avoids interference during cutting. The rhombic profile and standard dimensions simplify tool-change planning and spare-part logistics, reducing setup time when switching between equivalent ISO holders.

Rigidity and practical machining benefits

With a plate thickness of 4.76 mm and a 0.4 mm corner radius, the insert delivers the rigidity needed for finishing passes while keeping a small nose for controlled chip formation and fine results. The double-sided design increases the number of usable edges, improving cost efficiency per edge when compared with single-sided alternatives. The presence of a cylindrical hole facilitates secure screw clamping and repeatable positioning in compatible seats. For typical turning operations, pairing this insert with a stable holder and the correct chipbreaker will reduce vibration and consistently produce the desired surface finish.

Selection guidance and system assembly

When integrating the insert into a cutting system, match the chipbreaker and grade to the workpiece and stability of the setup: use finishing chipformers for light cuts and select more robust breakers for semi-finishing. The insert is supplied as an ISO-format component intended to work with a matching clamp set, backup shim and replacement screw arrangement; verify hole style and clamping geometry before purchase. If uncertainty remains about holder compatibility or the optimal chipbreaker, the Tungaloy CNMG120404 grade offers a predictable baseline for finishing steel, and the catalogue dimensions permit straightforward interchange with ISO CNMG seats.

Contact Metav Werkzeuge for expert application advice or to request a tailored quotation for the Tungaloy CNMG120404 GT9530 indexable insert; call +49 2822 7131930 or email info@metav-werkzeuge.com

Technical data

• Article number: 6998071
• Manufacturer SKU: TUN6998071
• Model series: ISO-Drehwendeschneidplatten
• Name: CNMG120404 GT9530 Tungaloy insert

Facts

• Corner radius: 0.4 mm
• Plate size: 12 mm
• Plate thickness: 4.76 mm
• Insert geometry angle: 80°
• Relief (free) angle: 0°
• Hole style: with cylindrical hole

Special features

• Coated cermet grade GT9530
• Cemented carbide substrate
• Double-sided, two usable cutting edges per side
• Rhombic (80° diamond) ISO CNMG geometry
• Intended application: turning (finishing to light universal)
• Compatible with standard external holders and boring bars
• System components: holder, backing shim/clamp set, replacement screws

FAQ

What materials is this insert suitable for?
The CNMG120404 GT9530 insert is formulated primarily for machining steel, providing good surface finish and longer tool life in stable turning operations.

How does the GT9530 grade differ from standard carbide grades?
GT9530 is a coated cermet grade that emphasises wear resistance and surface quality; compared with many carbide grades it offers improved flank life in finishing applications.

What does the 0.4 mm corner radius mean for cutting?
A 0.4 mm corner radius provides a balance between a fine surface finish and edge robustness, helping to avoid premature chipping in light finishing passes.

Is the insert compatible with existing CNMG holders?
The insert follows ISO CNMG 120404 dimensions; compatibility depends on holder form, relief clearance and clamp type—verify these parameters before mounting the CNMG120404.

How many cutting edges are available per insert?
This double-sided CNMG insert supplies multiple usable edges; the precise count depends on indexing practice but the design increases usable life compared with single-sided types.

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.