Mitsubishi GPMT070204-U1 UP20M Carbide Insert | Genuine MMC Japan
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GPMT070204-U1 UP20M
Mitsubishi Materials | Multi-Purpose Turning & Copying Specialist
The Mitsubishi GPMT070204-U1 UP20M is a precision-engineered parallelogram turning insert designed for versatility. Featuring the high-performance UP20M PVD Miracle Coating, this insert is exceptionally effective for machining Stainless Steel (M) and Steel (P). The U1 chipbreaker is specialized for copying and light-to-medium turning, ensuring excellent chip control even in difficult-to-cut materials.
Technical Specifications
| ISO Designation (Metric) | GPMT070204-U1 |
|---|---|
| ANSI Designation (Inch) | GPMT 21.51-U1 |
| Material Grade | UP20M (PVD Miracle Coating) |
| Corner Radius | 0.4 mm (1/64") |
| Insert Type | Parallelogram 82° |
UP20M Grade Advantage
The UP20M grade utilizes Mitsubishi's proprietary PVD Miracle Coating technology. It provides superior adhesion and high resistance to built-up edge (BUE), making it the first choice for sticky materials like austenitic stainless steel and heat-resistant alloys.
U1 Chipbreaker Logic
The U1 Chipbreaker is optimized for copying and profiling. Its geometry facilitates smooth chip breaking at low-to-medium feed rates, preventing long tangled chips that could damage the workpiece surface finish.
Recommended Cutting Parameters
| Workpiece Material | Cutting Speed ($v_c$) | Feed Rate ($f$) |
|---|---|---|
| Stainless Steel (304/316) | 80 - 150 m/min | 0.05 - 0.15 mm/rev |
| Carbon Steel / Alloy Steel | 100 - 180 m/min | 0.05 - 0.20 mm/rev |
COMPATIBLE TOOLING
This GPMT insert is typically used with Boring Bars or specialized Copying Tool Holders.
FIND COMPATIBLE HOLDERS →Metric (ISO) vs. Inch (ANSI) Reference
| Dimension | ISO: GPMT070204 | ANSI: GPMT 21.51 |
|---|---|---|
| Inscribed Circle (IC) | 6.35 mm | 1/4" |
| Thickness (S) | 2.38 mm | 3/32" |
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.