Mitsubishi WNMG080412-MM MC7025 Stainless Steel Turning Inserts (10pcs/box) - BEYOND

Mitsubishi WNMG080412-MM MC7025 Stainless Steel Turning Inserts (10pcs/box)

$92.26 USD

Price shown is a starting point. Contact us for a precise quote based on your requirements.

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Description

MITSUBISHI WNMG080412-MM MC7025

Professional Stainless Steel Specialist | 1.2mm Corner Radius | Made in Japan

Product Overview

The Mitsubishi WNMG080412-MM MC7025 is a high-performance double-sided 80° trigon negative insert precision-engineered for Stainless Steel turning. Featuring a robust 1.2mm corner radius for maximum edge strength and the specialized MC7025 CVD coating, this insert excels in medium cutting of austenitic and duplex stainless steels. The MM chipbreaker provides excellent chip control and prevents built-up edge (BUE), making this indexable carbide insert a premier choice for CNC machining where high productivity and exceptional tool life are required.

ISO Designation Identification

W
Trigon 80°
N
Negative 0°
M
Tolerance
G
Hole/Chip
08
IC 12.7mm
04
Thick 4.76mm
12
Radius 1.2mm
MM
Med-Stainless

Technical Specifications: Metric vs. Imperial

Technical Feature Metric (ISO) Imperial (ANSI)
Model Number WNMG 080412-MM WNMG 433-MM
Inscribed Circle (IC) 12.7 mm 0.500 inch
Corner Radius 1.2 mm 0.047 inch

Advanced Grade: MC7025 (The Stainless Master)

The MC7025 grade represents the peak of CVD technology for Stainless Steel. It features a specialized coating layer that resists thermal cracking and notch wear, common issues when machining gummy materials. This grade is optimized for continuous cutting at high speeds, providing stable performance across 300-series and duplex stainless steels on your CNC lathe.

MM Chipbreaker Geometry

The MM (Medium) chipbreaker is designed for a broad range of medium-duty machining. Paired with the large 1.2mm radius (12), it offers extreme edge toughness. In CNC turning, this combination handles inconsistent depths of cut and moderate feed rates while ensuring chips are broken into manageable sizes, protecting your workpiece finish.

Recommended Cutting Parameters

Optimized for Stainless Steel (M-Class):

  • Cutting Speed (Vc): 120 - 220 m/min (390 - 720 SFM)
  • Feed Rate (f): 0.20 - 0.45 mm/rev (0.008 - 0.018 ipr)
  • Depth of Cut (ap): 0.8 - 3.5 mm

*Pro Tip: Thanks to the 1.2mm radius, you can push higher feed rates with superior edge security.*

Compatible Holders:

Shop MWLNR / DWLNR 08 Holders

Global Verified Customer Feedback

⭐⭐⭐⭐⭐ "Best for 316 Stainless" - James H., USA
"The 1.2mm radius on MC7025 is a lifesaver. We do heavy roughing on 316 stainless and the tool life is nearly double our previous brand."

⭐⭐⭐⭐⭐ "Predictable and Stable" - Lars V., Germany
"Consistent Japanese quality. The MM breaker manages chips well even at lower feed rates. Very satisfied."

⭐⭐⭐⭐ "Great for High Speed" - Yuki M., Japan
"Handles the heat of high-speed stainless turning very well. The edge doesn't chip like others."

⭐⭐⭐⭐⭐ "Economic 6-Edge Design" - Liam T., Australia
"WNMG is superior value. 6 edges with Mitsubishi's toughness is the best ROI for our shop production."

⭐⭐⭐⭐⭐ "Fast Shipping, Original" - Pavel S., Poland
"Authentic inserts. Arrived in original packaging. Performance matches the technical data sheets perfectly."

Technical Q&A

Q: Can I use MC7025 for Steel?

A: MC7025 is optimized for Stainless Steel (M-Class). For general steel, please use UE6110 or MC6025 for better cost-efficiency.

Q: Why choose the 1.2mm radius over 0.8mm?

A: The 1.2mm radius offers a stronger cutting edge, which is vital for heavy roughing and managing heat in stainless steel.

Q: Is this insert compatible with standard holders?

A: Yes, it fits any standard MWLNR / DWLNR 08 holder. WNMG offers 6 usable edges for maximum economy.

Expert Machining Tip: MC7025 vs US735

For Stable, High-Speed Stainless turning, MC7025 is the king. For Interrupted Cutting or unstable setups, consider the US735 PVD grade for higher toughness.

Technical FAQ & Buying Guide

Are your carbide inserts interchangeable with major brands like Sandvik, Iscar, or Kennametal?

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.

How do I choose the correct insert grade and chipbreaker for machining Stainless Steel (M) vs. Carbon Steel (P)?

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.
What are the recommended cutting speed (Vc) and feed rate (f) parameters to maximize tool life?

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.
Do you offer bulk discounts or wholesale pricing for machine shops and distributors?

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.

What is your international shipping policy and typical lead time for orders?

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.

How do you guarantee the quality and tolerance precision of your CNC tools?

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.