Mitsubishi TNMG220408-MA UE6020 | Heavy-Duty Steel Turning Insert
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TNMG220408-MA UE6020
Mitsubishi Materials | Heavy-Duty General Purpose Steel Turning
The Mitsubishi TNMG220408-MA UE6020 is a large-format CVD coated carbide insert engineered for high-efficiency turning of carbon and alloy steels. Utilizing the UE6020 grade, this insert provides an industry-leading balance of wear resistance and fracture toughness. As a critical long-tail industrial tool for large CNC lathes, the MA chipbreaker ensures smooth medium cutting and reliable chip control even on abrasive steel surfaces.
P-Class Steel Specialist | Size 22 Robustness | CVD Coated
Technical Code Identification
Triangular Shape
0° Relief Angle
M-Class Tolerance
Cylindrical Hole
22mm Edge Length
4.76mm Thickness
0.8mm Radius
Medium Breaker
Metric (ISO) vs Inch (ANSI) Reference
| Feature | ISO (Metric) Model | ANSI (Inch) Equivalent |
|---|---|---|
| Model ID | TNMG220408-MA | TNMG 432 MA |
| Inscribed Circle (IC) | 12.7 mm | 0.500" |
| Nose Radius (RE) | 0.8 mm | 0.031" |
UE6020 Grade Technology
The UE6020 grade is Mitsubishi's premier solution for general-purpose steel turning. This CVD coated carbide features a unique layer structure that resists cratering and flank wear, making it an excellent indexable turning insert for P25-P35 material groups.
MA Chipbreaker Geometry
The MA chipbreaker is designed specifically for medium cutting operations. It strikes a balance between edge sharpness and strength, preventing the "nesting" of chips. This ensures high-productivity CNC machining on both carbon and alloy steel parts.
Recommended Cutting Parameters
| Workpiece Material | Cutting Speed ($v_c$) | Feed per Rev ($f$) | DOC ($a_p$) |
|---|---|---|---|
| Carbon Steel (S45C) | 150 - 300 m/min | 0.15 - 0.45 mm/rev | 1.0 - 5.0 mm |
| Alloy Steel (SCM440) | 120 - 250 m/min | 0.15 - 0.40 mm/rev | 1.0 - 4.5 mm |
MATCHING TOOL HOLDERS
Perfectly paired with MTJNR/L or WTJNR/L tool holders (Size 22).
View Size 22 Holders →
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.