Mitsubishi CNMG120404-GM MC7025 Stainless Steel Turning Insert (10pcs)
30-Day Free Returns
Free Worldwide Shipping
CNMG120404-GM MC7025
Stainless Steel Specialist | MC7025 Anti-Galling CVD | GM Control Geometry
Mastering the Challenges of Stainless Steel
MC7025 Grade (Anti-Adhesion CVD): Stainless steel is "gummy" and prone to sticking to the tool. The MC7025 grade solves this with a multi-layered CVD coating that features a smooth surface finish to prevent Built-Up Edge (BUE). This grade offers the perfect balance of wear resistance for long continuous cuts and toughness for light interrupted cycles in 300-series stainless steels.
GM Chipbreaker (The Versatile Finisher): The GM geometry is Mitsubishi's most balanced chipbreaker for medium-range stainless turning. It is designed to facilitate smooth chip evacuation even at lower feed rates, preventing the long, wiry chips that often scratch the workpiece surface in stainless applications.
0.4mm (1/64") Accuracy Radius: The 04 radius is the precision choice. It minimizes radial cutting forces, which is essential for preventing chatter on slender shafts and achieving the high-dimensional accuracy required in aerospace and medical component manufacturing.
Metric vs. Imperial Comparison
| System | Model Designation | I.C. (Inscribed Circle) | Thickness | Radius (RE) |
|---|---|---|---|---|
| Metric | CNMG120404-GM | 12.7 mm | 4.76 mm | 0.40 mm |
| Imperial | CNMG431-GM | 1/2" | 3/16" | 0.0157" (1/64") |
Stainless Cutting Parameters
*MC7025 performs best with high-pressure flood coolant to manage the thermal conductivity of stainless steel.
| Workpiece Material | Speed (Vc) | Feed (fn) | Depth (Ap) |
|---|---|---|---|
| Austenitic (304/316) | 140 - 240 m/min | 0.08 - 0.25 mm/r | 0.40 - 2.50 mm |
| Duplex Stainless (CD4MCu) | 80 - 150 m/min | 0.10 - 0.20 mm/r | 0.50 - 2.00 mm |
Compatible Tool Holders
Ensure high-precision clamping with DCLNR/L 12 series holders:
Shop DCLNR 12 HoldersPro-Tip: MC7025 vs. MP7035
MC7025 (CVD Precision): Best for stable, continuous cutting at higher speeds. Offers superior surface finish.
MP7035 (PVD Toughness): Switch to MP7035 for heavy interrupted cuts or when the machine setup is prone to vibration.
Search Keywords: CNMG120404-GM MC7025 price, Mitsubishi stainless steel inserts, CNMG431-GM carbide, MC7025 cutting data 316 stainless, GM chipbreaker range.
Long-tail Keywords: Best carbide inserts for 304 stainless turning, Mitsubishi MC7025 for precision stainless parts, CNMG 120404-GM for low chatter machining, buy genuine Mitsubishi MC7025 online, stainless steel CVD coated inserts.