Mitsubishi CCMT120408 UTI20T Uncoated Universal Carbide Turning Insert (10pcs)
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CCMT120408 UTI20T
High-Toughness Universal Workhorse | Uncoated Sub-Micron Carbide | 0.8mm Radius
Material Resilience & Edge Strength
UTI20T Grade (Sub-Micron Mastery): UTI20T is an uncoated carbide grade specifically optimized for general-purpose mechanical toughness. By avoiding the coating process, the carbide maintains its original grain structure integrity at the edge. This makes it immune to "coating peel" and highly resistant to thermal cracking during interrupted cuts on steel, stainless steel, and cast iron.
0.8mm Radius (Productivity Edge): The 08 (1/32") radius is built for Semi-Roughing and High-Feed Turning. It offers a much higher degree of edge security than smaller radii, allowing the insert to withstand the high pressures of deep cuts and the abrasiveness of raw stock.
Metric vs. Imperial Comparison
| System | Model Designation | I.C. (Inscribed Circle) | Thickness | Radius (RE) |
|---|---|---|---|---|
| Metric | CCMT120408 | 12.70 mm | 4.76 mm | 0.80 mm |
| Imperial | CCMT432 | 0.500" (1/2") | 0.187" (3/16") | 0.0315" (1/32") |
Recommended Cutting Parameters
*The 0.8mm radius thrives under high feed loads. Use these parameters for stable, heavy turning.
| Material Group | Speed (Vc) | Feed (fn) | Depth (Ap) |
|---|---|---|---|
| Carbon Steels | 80 - 180 m/min | 0.15 - 0.40 mm/r | 0.50 - 3.50 mm |
| Alloy Steels / Iron | 60 - 140 m/min | 0.12 - 0.35 mm/r | 0.50 - 2.80 mm |
Required Tool Holder
Maximum performance for SCLCR/L 12 series external holders and heavy-duty bars:
Shop SCLCR 12 HoldersPro-Tip: UTI20T vs VP15TF
UTI20T (Uncoated): The Reliability King. Best for older machines, manual turning, or when you are constantly switching between steel and iron. It absorbs shock better than coated grades.
VP15TF (PVD Coated): Switch to VP15TF only when you have high-speed CNC stability and need the coating to prevent thermal wear in strictly Stainless or Steel production.
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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.