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 |
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.