Mitsubishi CNMG120412-MA UE6020 Carbide Insert for Heavy Steel Roughing (10pcs)
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CNMG120412-MA UE6020
Heavy Roughing Powerhouse | UE6020 CVD Grade | 1.2mm High-Strength Radius
Maximum Stability for Steel Roughing
UE6020 Grade (Advanced CVD Multi-Layer): The UE6020 is a specialized CVD-coated grade optimized for P-Class (Steel) materials. It features a thick, heat-resistant Alumina layer that acts as a shield against crater wear. This grade is legendary for maintaining cutting edge integrity during long, high-temperature roughing passes in Carbon Steel and Alloy Steel.
MA Chipbreaker (Medium-Heavy Duty): The MA geometry is designed to handle a wide range of cutting depths. On this 12-radius insert, the MA chipbreaker provides enough clearance to prevent chip packing during heavy cuts while remaining sharp enough to reduce the radial forces that cause deflection.
1.2mm (3/64") Reinforced Radius: The larger radius is the secret to this insert's durability. It distributes cutting heat over a wider area and provides a much stronger corner than the 08 or 04 versions, making it the ideal choice for interrupted cuts and high-feed roughing.
Metric vs. Imperial Comparison
| System | Model Designation | I.C. (Inscribed Circle) | Thickness | Radius (RE) |
|---|---|---|---|---|
| Metric | CNMG120412-MA | 12.7 mm | 4.76 mm | 1.20 mm |
| Imperial | CNMG433-MA | 1/2" | 3/16" | 0.0472" (3/64") |
Recommended Roughing Parameters
*The 1.2mm radius is designed for stability. Ensure your setup is rigid to prevent vibration at higher feed rates.
| Workpiece Material | Speed (Vc) | Feed (fn) | Depth (Ap) |
|---|---|---|---|
| Low Carbon Steel (A36/1018) | 180 - 380 m/min | 0.25 - 0.60 mm/r | 1.20 - 5.50 mm |
| High Alloy Steel (4140/4340) | 130 - 300 m/min | 0.20 - 0.50 mm/r | 1.20 - 4.50 mm |
Compatible Tool Holders
Maximum performance for DCLNR/L 12 and MCLNR/L 12 roughing systems:
Shop DCLNR 12 HoldersPro-Tip: UE6020 vs. MC6015
UE6020 (The Tough One): Perfect for heavy roughing, rough casting skins, and interrupted cuts. It prioritize edge toughness to prevent chipping.
MC6015 (The Speed Specialist): Better for high-speed finishing or light-to-medium turning where pure wear resistance is needed to maintain surface finish over long runs.
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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.