Mitsubishi CNMG120404-GM MC7025 Stainless Steel Turning Insert (10pcs)
Price shown is a starting point. Contact us for a precise quote based on your requirements.
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.
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.