Mitsubishi CCMT080308 UTI20T Uncoated Carbide Turning Insert (10pcs)
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CCMT080308 UTI20T
The Classic Universal Workhorse | Uncoated Sub-Micron Carbide | 0.8mm Radius
Material Science & Edge Resilience
UTI20T Grade (Sub-Micron Strength): UTI20T is a time-tested, uncoated sub-micron carbide grade. It is specifically engineered for mechanical toughness. Unlike coated inserts that may suffer from "coating delamination" in unstable conditions, UTI20T offers a consistent, sharp edge for general turning of Steel, Stainless Steel, and Cast Iron. It is the go-to grade for interrupted cuts or machines with limited spindle speeds.
0.8mm High-Strength Radius: The 08 (1/32") corner radius is the industry favorite for semi-finishing and light roughing. It provides a significantly stronger edge than the 0.4mm version, allowing for higher feed rates and better heat dissipation, resulting in longer tool life in abrasive or tougher materials.
Metric vs. Imperial Comparison
| System | Model Designation | I.C. (Inscribed Circle) | Thickness | Radius (RE) |
|---|---|---|---|---|
| Metric | CCMT080308 | 8.00 mm | 3.18 mm | 0.80 mm |
| Imperial | CCMT2.5(2)2 | 5/16" | 1/8" | 0.0315" (1/32") |
Recommended Cutting Parameters
*The 0.8mm radius allows for more aggressive feeds. Avoid excessive heat by using proper coolant.
| Material Group | Speed (Vc) | Feed (fn) | Depth (Ap) |
|---|---|---|---|
| Carbon Steels | 80 - 180 m/min | 0.12 - 0.35 mm/r | 0.50 - 2.50 mm |
| Cast Iron / Stainless | 60 - 140 m/min | 0.10 - 0.28 mm/r | 0.50 - 2.00 mm |
Required Tool Holder
Maximum performance for SCLCR/L 08 series Turning Tools and Boring Bars:
Shop SCLCR 08 HoldersPro-Tip: UTI20T vs VP15TF
UTI20T (Universal Uncoated): Use for versatility and shock resistance. It is the best choice for manual lathes or CNC jobs where material types change frequently and high speeds aren't reachable.
VP15TF (PVD Coated): Switch to VP15TF when you need to maximize speed and tool life in strictly Steel or Stainless Steel production environments.
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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.