Mitsubishi CPMH090304L-F NX2525 Cermet Finishing Insert (10pcs)
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CPMH090304L-F NX2525
Mirror Finish Cermet | NX2525 High-Speed Grade | F-Finishing Geometry
The Science of Surface Excellence
NX2525 Grade (Premium Cermet): The NX2525 is a micro-grain cermet grade that combines excellent wear resistance with high fracture toughness. Because cermet does not react chemically with steel, it prevents material welding at the tip. This results in a "mirror-like" surface finish and exceptional dimensional consistency over long production runs in P-Class (Steel) materials.
F Chipbreaker (Fine-Cut Specialist): The F-breaker is a dedicated finishing geometry. It features a sharp cutting edge and a specific chip pocket depth that manages fine, thin chips at shallow depths of cut. This prevents "nesting" and ensures that the finished surface is not scratched by retreating chips.
L (Left-Hand) Orientation: This is a Left-hand designated insert. Ensure your tool holder matches this orientation (typically used in specific internal boring or back-turning operations).
Metric vs. Imperial Comparison
| System | Model Designation | I.C. (Inscribed Circle) | Thickness | Radius (RE) |
|---|---|---|---|---|
| Metric | CPMH090304L-F | 9.525 mm | 3.18 mm | 0.40 mm |
| Imperial | CPMH321L-F | 3/8" | 1/8" | 0.0157" (1/64") |
Recommended Steel Finishing Parameters
*Cermet thrives at high speeds. Avoid low-speed machining to prevent edge built-up.
| Material Group | Speed (Vc) | Feed (fn) | Depth (Ap) |
|---|---|---|---|
| Low Carbon Steel | 180 - 350 m/min | 0.05 - 0.15 mm/r | 0.10 - 1.00 mm |
| Alloy Steel (Hardened) | 150 - 280 m/min | 0.04 - 0.12 mm/r | 0.10 - 0.80 mm |
Compatible Left-Hand Holders
Paired perfectly with SCLCL 09-series external holders or boring bars:
Shop Left-Hand 09 HoldersPro-Tip: Cermet NX2525 vs. Carbide VP15TF
NX2525 Cermet: Best for high-speed finishing where surface brightness is the #1 priority. Not recommended for heavy interrupted cuts.
VP15TF Carbide: Choose this for unstable setups or interrupted cuts. It is tougher than cermet but cannot match the surface gloss of NX2525.
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