Mitsubishi TPMN220412 UTI20T | Heavy-Duty Carbide Turning Insert
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TPMN220412 UTI20T
Mitsubishi Materials | Maximum Strength Heavy Roughing Specialist
Built for Heavy Impacts and Deep Cuts
The Mitsubishi TPMN220412 UTI20T is a specialized heavy-duty turning insert designed for high-volume material removal. The UTI20T uncoated grade provides exceptional thermal shock resistance, making it perfect for the interrupted cuts often found in Cast Iron and large Non-Ferrous castings. With a 22mm edge length and a robust 1.2mm corner radius, this industrial roughing tool ensures maximum stability during CNC boring and large-diameter turning operations.
UTI20T Uncoated Carbide | TPMN Flat-Top | 1.2mm Impact Radius
Technical Code Identification
Triangular Shape
11° Positive Relief
M-Class Tolerance
Flat-Top (No Chipbreaker)
22mm Edge Length
4.76mm Thick
1.2mm Radius
Uncoated Grade
ISO (Metric) vs ANSI (Inch) Comparison
| Feature Spec | ISO (Metric) | ANSI (Inch Equivalent) |
|---|---|---|
| Model Number | TPMN220412 | TPMN 433 |
| Inscribed Circle (IC) | 12.7 mm | 0.500" (1/2") |
| Corner Radius | 1.2 mm | 0.0472" (3/64") |
UTI20T Toughness
UTI20T is a premium uncoated carbide grade that excels in toughness. It is specifically optimized for P-M-K material groups, with a heavy focus on Cast Iron (K) and Non-Ferrous Alloys (N). Its high resistance to thermal cracking makes it the ideal candidate for roughing operations where cutting temperatures fluctuate rapidly.
TPMN Heavy Radius (1.2mm)
The 1.2mm corner radius on the TPMN220412 is designed to absorb the heavy loads of high-feed turning. Unlike sharper inserts, the 1.2mm tip dissipates heat more effectively and resists chipping when encountering scale or inclusions on the workpiece surface.
Recommended Cutting Parameters
| Material Group | Speed ($v_c$) | Feed ($f$) | DOC ($a_p$) |
|---|---|---|---|
| Gray Cast Iron | 50 - 130 m/min | 0.20 - 0.50 mm/rev | 1.0 - 5.0 mm |
| Aluminum Alloys | 150 - 450 m/min | 0.15 - 0.40 mm/rev | 0.5 - 6.0 mm |