Mitsubishi CNMG120408-MA UE6020 Carbide Turning Insert for Steel (10pcs)
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CNMG120408-MA UE6020
Universal Steel Specialist | UE6020 CVD Grade | MA General Purpose Geometry
The Professional Choice for Steel Turning
UE6020 Grade (Advanced CVD Coating): The UE6020 is Mitsubishi’s flagship grade for P-Class (Steel) machining. Utilizing a thick TiCN-Al2O3-TiN CVD coating, it provides an incredible thermal barrier and wear resistance. This grade excels in medium-speed applications where consistency and tool life predictability are essential for automated production.
MA Chipbreaker (Medium Cut Precision): The MA geometry is a versatile medium-range chipbreaker. It features a unique land and groove design that ensures excellent chip control across a wide range of feed rates. It effectively breaks chips in soft steels that typically cause "stringing" issues.
0.8mm (1/32") Industry Standard Radius: The 08 radius is selected for its high edge security. It is strong enough for light roughing through surface scale while maintaining the ability to produce a high-quality (Ra) surface finish in semi-finishing operations.
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 General Purpose Turning. Use dry cutting or flood coolant for enhanced tool life.
| Workpiece Material | Speed (Vc) | Feed (fn) | Depth (Ap) |
|---|---|---|---|
| Mild Steel (A36 / 1018) | 200 - 400 m/min | 0.15 - 0.45 mm/r | 0.80 - 4.50 mm |
| Alloy Steel (4140 / 4340) | 150 - 320 m/min | 0.15 - 0.35 mm/r | 0.80 - 3.50 mm |
Compatible Tool Holders
Maximum performance with DCLNR/L 12 and MCLNR/L 12 series holders:
Shop DCLNR 12 HoldersPro-Tip: UE6020 vs. MC6025
UE6020 (Reliability King): The go-to choice for general steel turning. It handles light interruptions better and is very forgiving across different machine types.
MC6025: Mitsubishi's newer generation grade. Choose MC6025 if you are looking to increase cutting speeds in high-stability environments for pure efficiency.
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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.