Mitsubishi CCMT09T304 NX2525 Cermet Turning Insert (10pcs/Box)
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CCMT09T304 NX2525
High-Speed Steel Finishing | TiCN Cermet Grade | 0.4mm Radius
Material Science & Geometry
NX2525 Grade (TiCN Cermet): NX2525 is an uncoated Cermet (Ceramic-Metallic) grade. Unlike tungsten carbide, cermet has a very low chemical affinity for steel. This prevents Built-Up Edge (BUE) and smearing, allowing you to achieve a mirror-polished surface finish directly from the machine. It is designed for high surface speeds where traditional carbide would suffer from plastic deformation.
CCMT Geometry (80° Positive): The CCMT shape features a 7° positive relief angle. This reduces cutting resistance, making it the ideal choice for boring bars and slender workpieces. The 0.4mm (1/64") radius provides excellent edge security, allowing for consistent performance in both finishing and light semi-finishing.
Metric vs. Imperial Comparison
| System | Model Designation | I.C. (Inscribed Circle) | Thickness | Radius (RE) |
|---|---|---|---|---|
| Metric | CCMT09T304 | 9.525 mm | 3.97 mm | 0.40 mm |
| Imperial | CCMT32.51 | 0.375" (3/8") | 0.156" (5/32") | 0.0157" |
Recommended Cutting Parameters
*The 0.4mm radius allows for higher feed rates than the 0.2mm version. Best results are achieved in dry finishing or with high-pressure oil mist.
| Workpiece Material | Speed (Vc) | Feed (fn) | Depth (Ap) |
|---|---|---|---|
| Carbon & Alloy Steel | 150 - 350 m/min | 0.05 - 0.20 mm/r | 0.15 - 1.20 mm |
| Structural / Mild Steel | 180 - 400 m/min | 0.05 - 0.25 mm/r | 0.10 - 1.50 mm |
Compatible Tool Holders
Standard fit for SCLCR/L 09 external tools and S-SCLCR boring bars:
Shop SCLCR 09 HoldersPro-Tip: NX2525 vs Carbide Grades
NX2525 (Cermet): Use for Continuous Finishing only. It is the king of surface finish. If you need a "jewelry" look on steel, this is the grade.
VP15TF / MP6015 (Carbide): Switch to these grades if you encounter Interrupted Cuts (hex bars, keyways) or if you are machining Stainless Steel. Cermet is more brittle; carbide is needed to handle impact.
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Technical FAQ & Buying Guide
When choosing CNC cutting tools, check the full model code, dimensions, grade and selected variant before ordering. Do not rely on the product image alone.
For carbide inserts, tool holders, drills and end mills, compare the mounting dimensions, connection type and manufacturer's specifications with your holder or machine. If you are unsure, share your existing part number and machining application with us before ordering.
Check the product listing for the selling unit, pack quantity and included components. If it is unclear whether the price is per piece or per pack, or whether a tool body and inserts are sold separately, contact us before purchasing.
Select cutting speed, feed rate and depth of cut using the relevant manufacturer's recommendations for your tool model, workpiece material, machine conditions and coolant method. The same settings are not suitable for every product or application.
Our automatic quantity discount is 6% off for 2–9 items and 12% off for 10 or more items, based on the total product quantity in the cart. Other offers may not combine with this discount; check the applicable offer conditions.
According to our shipping policy, orders are typically processed and shipped within 1–3 business days after confirmation. Delivery generally takes 5–20 business days, depending on your destination and shipping method. Customs clearance or unforeseen delays may affect delivery times. A tracking number is sent by email after shipment.