Mitsubishi SCMT120408 UE6020 Carbide Insert | Genuine MMC Japan
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SCMT120408 UE6020
Mitsubishi Materials | The Standard for General Steel Turning
The Mitsubishi SCMT120408 UE6020 is a premium indexable turning insert engineered for reliability across various steel machining operations. Featuring the versatile UE6020 CVD coating, this insert excels in general-purpose steel turning, providing an ideal balance between wear resistance and toughness. The 0.8mm nose radius ensures a high-strength cutting edge, making it the preferred choice for CNC machining of carbon and alloy steels in both continuous and light interrupted cuts.
ISO Designation Decoded
Square 90°
7° Relief Angle
M-Class Tolerance
With Hole
12.7mm Size
4.76mm Thick
0.8mm Radius
Technical Specifications
| Feature | Metric Designation | Inch (ANSI) Designation |
|---|---|---|
| Inscribed Circle ($IC$) | 12.7 mm | 1/2" (SCMT 432) |
| Thickness ($S$) | 4.76 mm | 3/16" |
| Nose Radius ($R_e$) | 0.8 mm | 1/32" |
| Coating Type | UE6020 (CVD Al2O3 / TiCN) |
UE6020 Material Technology
The UE6020 grade is Mitsubishi's flagship choice for steel (ISO P-class). It features a multi-layered CVD coating designed to withstand the high temperatures of high-speed turning while maintaining edge toughness. It is particularly effective at preventing flank wear and plastic deformation, ensuring a long and predictable tool life in everyday workshop conditions.
Strong Corner Geometry
The 0.8mm nose radius (08) provides extra strength at the tip, allowing for significantly higher feed rates compared to 0.4mm variants. This radius size is the industry standard for medium-duty roughing to semi-finishing, providing a high-quality surface finish without compromising on cutting speed or durability.
Recommended Cutting Parameters
Primary Application: Steel (ISO P20 - P35)
| Material Group | Cutting Speed ($v_c$) | Feed Rate ($f$) | Depth of Cut ($a_p$) |
|---|---|---|---|
| Mild/Carbon Steel | 180 - 320 m/min | 0.15 - 0.40 mm/rev | 1.0 - 4.5 mm |
| Alloy Steel | 150 - 280 m/min | 0.12 - 0.35 mm/rev | 0.8 - 3.5 mm |
LATHE TOOL HOLDER COMPATIBILITY
The SCMT1204 series is optimized for Mitsubishi SSDCN or SSBCR/L external turning tool holders.
View Matching 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.