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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