Mitsubishi DCMT11T308 NX2525 Cermet Turning Insert for Steel Finishing (10pcs)
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DCMT11T308 NX2525
High-Speed Cermet | Robust 0.8mm Radius | Mirror Finish Grade
High-Efficiency Cermet Finishing
NX2525 Grade (Titanium-Based Cermet): Mitsubishi's NX2525 is a micro-grain cermet grade designed for finishing. Unlike carbide, Cermet has a very low chemical affinity for steel, which prevents "Built-up Edge" (BUE). This results in a glossy, mirror-like finish and exceptional dimensional stability. It is the premier choice for high-speed continuous cutting where surface aesthetics are critical.
DCMT Geometry (Positive 55° Diamond): The 55-degree diamond shape provides excellent clearance for profiling and facing. The positive rake angle significantly reduces cutting resistance and heat generation, protecting the workpiece from thermal distortion during the final pass.
0.8mm Radius (Increased Productivity): The 0.8mm (08) radius offers superior edge toughness compared to smaller radii. It allows for higher feed rates while maintaining a high-quality surface finish, making it ideal for larger components or semi-finishing applications where speed is essential.
Metric vs. Imperial Comparison
| System | Model Designation | I.C. (Inscribed Circle) | Thickness | Radius (RE) |
|---|---|---|---|---|
| Metric | DCMT11T308 | 9.525 mm | 3.97 mm | 0.80 mm |
| Imperial | DCMT32.52 | 3/8" | 5/32" | 0.0315" (1/32") |
Recommended Cutting Parameters
*Cermet requires high spindle speeds to prevent chipping. The 0.8mm radius allows for more aggressive feeds than smaller radii.
| Workpiece Material | Speed (Vc) | Feed (fn) | Depth (Ap) |
|---|---|---|---|
| Carbon Steel (1045) | 200 - 450 m/min | 0.10 - 0.30 mm/r | 0.30 - 2.00 mm |
| Alloy Steel (4140) | 150 - 350 m/min | 0.08 - 0.25 mm/r | 0.30 - 1.50 mm |
Compatible Tool Holders
Ensure maximum rigidity with SDJCR/L or SDUCR/L 11-series holders:
Shop SDJCR 11 HoldersGrade Comparison: NX2525 vs. Carbide
NX2525 (Cermet): Specifically optimized for high-speed continuous finishing. It provides a superior "Mirror" finish compared to any coated carbide. However, it is more brittle than carbide and should not be used for heavy interrupted cuts.
VP15TF (PVD Carbide): Use this when toughness is required, such as in interrupted cuts, machining through scale, or when working with stainless steels and superalloys.
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Technical FAQ & Buying Guide
Absolutely. Our CNC carbide inserts (including CNMG, WNMG, DNMG, and APMT series) are manufactured strictly adhering to international ISO/ANSI specifications. A CNMG 120408 from OYYU BEYOND will flawlessly fit any standard turning tool holder or indexable tool from major global brands like Sandvik Coromant, Kennametal, Iscar, Walter, or SECO, providing a highly cost-effective premium alternative without sacrificing tolerance or tool life.
We offer optimized CVD and PVD multi-layer coatings for different ISO material groups:
- For Carbon/Alloy Steel (ISO P): Choose our thick multi-layer CVD coated grades (e.g., Al2O3 + TiN). They provide exceptional crater wear resistance and thermal barriers during high-speed dry or wet roughing.
- For Stainless Steel (ISO M): Choose our nano-structured PVD coated grades with sharp, positive chipbreakers (like -TM or -MA). This combination prevents work hardening and effectively controls sticky chips.
The optimal cutting parameters vary depending on the workpiece hardness and operation type:
- For General Steel Turnings: Recommended cutting speed ($V_c$) ranges from 150 to 280 m/min, with a feed rate ($f$) of 0.15 to 0.45 mm/rev.
- For Stainless Steel Finishing: Recommended cutting speed ($V_c$) is 120 to 200 m/min, with a feed rate ($f$) of 0.10 to 0.25 mm/rev.Always adjust parameters based on early wear patterns: increase $V_c$ if built-up edge occurs, or reduce $V_c$ if severe flank wear is observed.
Yes, we support machine shops, distributors, and global buyers with tiered wholesale pricing and competitive volume discounts. We also provide OEM custom manufacturing solutions for tool holders and carbide inserts based on your technical drawings. Contact our team to request a quick B2B quotation.
We provide secure worldwide express shipping (via DHL, FedEx, and UPS) with specialized, vibration-proof industrial packaging to ensure tools arrive in perfect condition. In-stock items are dispatched within 24-48 hours, while custom or bulk orders typically have a stable lead time of 15-25 days.
All our cutting tools and tool holders are manufactured strictly in accordance with ISO 9001 and international industrial standards. Every batch undergoes 100% rigorous quality control testing using high-precision optical measuring equipment to ensure reliable tool life and stable performance in continuous mass production.