Mitsubishi CCMT09T304 UTI20T Uncoated Universal Carbide Turning Insert (10pcs)
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CCMT09T304 UTI20T
Universal Job-Shop Master | Uncoated Sub-Micron Carbide | 0.4mm Radius
Grade & Geometry Analysis
UTI20T Grade (Uncoated Toughness): UTI20T is a sub-micron grain carbide that prioritizes impact resistance and edge stability. Because it is uncoated, it maintains a sharper cutting edge than CVD-coated inserts, making it perfect for light-duty lathes or applications where high speeds cannot be reached. It is highly resistant to thermal shock, making it the safest choice for interrupted cuts.
0.4mm Precision Radius: The 04 (1/64") radius is the industry favorite for semi-finishing to finishing. It minimizes radial cutting forces, which is essential for preventing chatter in internal boring operations or when machining slender workpieces.
Metric vs. Imperial Comparison
| System | Model Designation | I.C. (Inscribed Circle) | Thickness | Radius (RE) |
|---|---|---|---|---|
| Metric | CCMT09T304 | 9.525 mm | 3.97 mm | 0.40 mm |
| Imperial | CCMT32.51 | 0.375" (3/8") | 0.156" (5/32") | 0.0157" (1/64") |
Recommended Cutting Parameters
*UTI20T is a "General Purpose" grade. Start with mid-range parameters and adjust based on vibration.
| Material Group | Speed (Vc) | Feed (fn) | Depth (Ap) |
|---|---|---|---|
| Low-Carbon Steel | 70 - 160 m/min | 0.05 - 0.20 mm/r | 0.20 - 1.50 mm |
| Alloy Steel / Iron | 50 - 130 m/min | 0.05 - 0.15 mm/r | 0.20 - 1.20 mm |
Compatible Tool Holders
Maximum versatility for SCLCR/L 09 series External Holders and Boring Bars:
Shop SCLCR 09 HoldersPro-Tip: UTI20T vs VP15TF
UTI20T (Uncoated): The Reliability Specialist. Use this when you have unstable setups, manual lathes, or varied materials. It is much tougher against edge-chipping than coated grades.
VP15TF (PVD): The Speed Specialist. Switch to VP15TF when you are running high-volume CNC production on Steel and need the coating to resist high-speed thermal wear.
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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.