Mitsubishi CNMG120408-MA MC6025 Carbide Turning Insert for Steel (10pcs)
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CNMG120408-MA MC6025
The Universal Steel Master | Nano-Texture CVD Grade | MA Multi-Purpose Geometry
The New Standard in Steel Machining
MC6025 Grade (Nano-Texture CVD Technology): The MC6025 is Mitsubishi's next-generation grade for P-Class (Steel). It features a highly oriented crystal structure within the Alumina coating. This "Nano-Texture" provides twice the resistance to crater wear compared to traditional CVD grades while maintaining high fracture toughness, making it reliable for both continuous and light interrupted cuts.
MA Chipbreaker (Versatility Redefined): The MA geometry is a medium-cut specialist. It is designed to minimize cutting resistance while maintaining a strong edge. It provides excellent chip control across a broad range of feed rates, effectively breaking chips in everything from soft mild steels to tough alloy steels.
0.8mm (1/32") Industry Standard Radius: The 08 radius is the most popular choice for a reason. It offers the ideal trade-off: a strong enough corner to handle medium roughing and surface scale, and a fine enough point to leave a high-quality surface finish.
Metric vs. Imperial Comparison
| System | Model Designation | I.C. (Inscribed Circle) | Thickness | Radius (RE) |
|---|---|---|---|---|
| Metric | CNMG120408-MA | 12.7 mm | 4.76 mm | 0.80 mm |
| Imperial | CNMG432-MA | 1/2" | 3/16" | 0.0315" (1/32") |
Recommended Cutting Parameters
*Optimized for Universal Steel Turning. Suitable for dry machining or flood coolant.
| Workpiece Material | Speed (Vc) | Feed (fn) | Depth (Ap) |
|---|---|---|---|
| Mild Steel (A36 / 1018) | 220 - 420 m/min | 0.15 - 0.45 mm/r | 0.80 - 4.50 mm |
| Alloy Steel (4140 / 4340) | 180 - 350 m/min | 0.15 - 0.35 mm/r | 0.80 - 3.50 mm |
Compatible Tool Holders
Ensure rigid clamping with DCLNR/L 12 and MCLNR/L 12 series holders:
Shop DCLNR 12 HoldersPro-Tip: MC6025 vs. MC6015 vs. UE6020
MC6025 (The Balanced Choice): Your daily driver. Best for general purpose steel turning where you encounter mixed cuts (continuous and light interrupted).
MC6015 (The Speed Choice): Upgrade to MC6015 for pure speed in stable, continuous passes to maximize tool life.
UE6020 (The Toughness Choice): Downgrade to UE6020 only if you have heavy interruptions or very unstable setups where edge chipping is the main failure mode.
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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.