Mitsubishi CNMG120404-GM MC7025 Stainless Steel Turning Insert (10pcs)
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💰 Bulk savings 2-9 pcs · 6% OFF | 10+ pcs · 12% OFF
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.
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This Mitsubishi insert is in stock. 24-hour quote response. ISO 9001 certified. Ships from Hangzhou in 3–7 days.
Technical FAQ & Buying Guide
When choosing CNC cutting tools, check the full model code, dimensions, grade and selected variant before ordering. Do not rely on the product image alone.
For carbide inserts, tool holders, drills and end mills, compare the mounting dimensions, connection type and manufacturer's specifications with your holder or machine. If you are unsure, share your existing part number and machining application with us before ordering.
Check the product listing for the selling unit, pack quantity and included components. If it is unclear whether the price is per piece or per pack, or whether a tool body and inserts are sold separately, contact us before purchasing.
Select cutting speed, feed rate and depth of cut using the relevant manufacturer's recommendations for your tool model, workpiece material, machine conditions and coolant method. The same settings are not suitable for every product or application.
Our automatic quantity discount is 6% off for 2–9 items and 12% off for 10 or more items, based on the total product quantity in the cart. Other offers may not combine with this discount; check the applicable offer conditions.
According to our shipping policy, orders are typically processed and shipped within 1–3 business days after confirmation. Delivery generally takes 5–20 business days, depending on your destination and shipping method. Customs clearance or unforeseen delays may affect delivery times. A tracking number is sent by email after shipment.