Mitsubishi SEEN1504AFTN1 NX2525 Milling Insert | Mirror Finish Cermet
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SEEN1504AFTN1 NX2525
Mitsubishi Materials | The Mirror Finishing Cermet Specialist
The Mitsubishi SEEN1504AFTN1 NX2525 is a high-performance cermet milling insert engineered for precision finishing and semi-finishing of steel. Utilizing the advanced NX2525 cermet grade, this insert is designed to deliver a mirror surface finish that carbide simply cannot match. Its superior resistance to built-up edge (BUE) and oxidation makes it the industry standard for high-speed CNC milling where dimensional accuracy and aesthetic quality are paramount.
Packaging: Genuine Mitsubishi Box of 10 Inserts
ISO Designation Decoded
Square 90°
20° Relief
E-Class Tol.
No Chipbreaker
15.875mm Size
4.76mm Thick
Lead/Flat Angle
Technical Specifications
| Feature | Metric Designation | Inch (ANSI) Designation |
|---|---|---|
| Model Name | SEEN1504AFTN1 | SEEN 53 AFTN1 |
| Inscribed Circle ($IC$) | 15.875 mm | 5/8" |
| Thickness ($S$) | 4.76 mm | 3/16" |
| Material Class | NX2525 Micro-Grain Cermet (TiCN Base) | |
NX2525 Cermet Advantage
The NX2525 grade is a specialized cermet (ceramic-metallic) material. Unlike standard carbide, it possesses a low affinity for steel, which virtually eliminates built-up edge. It maintains high hardness at elevated cutting temperatures, allowing for high-speed finishing of carbon and alloy steels while providing long tool life and exceptional gloss on the finished part.
AFTN Geometry for Finishing
The AFTN geometry is optimized for 45° face milling. The sharp edge and high relief angle (20°) significantly reduce cutting resistance, which is critical for cermet grades to prevent vibration. This geometry ensures that even at low feed per tooth, the insert "slices" rather than "rubs," resulting in superior surface finish quality.
Recommended Cutting Parameters
High-Speed Finishing (Dry Machining Preferred)
| Material Group | Cutting Speed ($v_c$) | Feed per Tooth ($f_z$) | Depth of Cut ($a_p$) |
|---|---|---|---|
| Low Carbon Steel | 200 - 400 m/min | 0.08 - 0.20 mm/t | 0.1 - 1.5 mm |
| Alloy Steel / Tool Steel | 150 - 300 m/min | 0.05 - 0.15 mm/t | 0.1 - 1.0 mm |