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" |