Mitsubishi WNMG080412-MA MC7025 Carbide Turning Inserts for Stainless Steel (10pcs) - BEYOND

Mitsubishi WNMG080412-MA MC7025 Carbide Turning Inserts for Stainless Steel (10pcs)

$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-MA MC7025

The Stainless Steel Machining Specialist | 100% Made in Japan

Product Overview

The Mitsubishi WNMG080412-MA MC7025 is a premium, double-sided 80° trigon negative insert specifically engineered for Stainless Steel turning. Designed and manufactured in Japan, the MC7025 CVD coating utilizes advanced Al-Ti-Cr-N layers to combat the work-hardening and high-heat characteristics of austenitic stainless steels. Featuring a robust 1.2mm radius for increased edge strength and the versatile MA chipbreaker, this indexable carbide insert is the professional choice for medium roughing in CNC machining environments.

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
MA
Medium Cut

Technical Specifications: Metric vs. Imperial

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

MC7025: The Stainless Steel Choice

The MC7025 grade is Mitsubishi's specialized CVD solution for Stainless Steel turning. Stainless steel often causes notch wear and built-up edge; however, MC7025 utilizes a smooth surface coating that prevents material adhesion. This grade is optimized for the M20-M30 range, providing superior resistance to the high thermal loads found in 304 and 316 stainless steel production runs.

MA Chipbreaker Geometry

The MA chipbreaker is an all-purpose medium-range geometry. It provides an excellent balance between sharp cutting action and edge toughness. For stainless steel, the MA geometry ensures efficient chip control, breaking the chips into manageable C-shapes even in materials known for being "gummy."

Recommended Cutting Parameters

Optimized for Stainless Steel (M-Class):

  • Cutting Speed (Vc): 100 - 200 m/min (330 - 655 SFM)
  • Feed Rate (f): 0.20 - 0.50 mm/rev (0.008 - 0.020 ipr)
  • Depth of Cut (ap): 1.0 - 4.5 mm

*Note: Due to the 1.2mm radius, you can achieve higher feed rates than standard 0.4 or 0.8mm inserts.*

Compatible External Tool Holders:

Shop MWLNR / DWLNR Tool Holders

Global Verified Customer Reviews

⭐⭐⭐⭐⭐ "Game Changer for 316 Stainless" - Mark T., USA
"The MC7025 grade lasts much longer than the previous brand we used. The 1.2mm radius is perfect for heavy medium cutting."

⭐⭐⭐⭐⭐ "Excellent Quality" - Hans L., Germany
"Original boxes, verified Japanese quality. No bird-nesting chips with the MA geometry."

⭐⭐⭐⭐ "Great Stability" - Sato K., Japan
"Reliable performance on long batches. The MC7025 resists heat deformation very well."

⭐⭐⭐⭐⭐ "Cost Effective" - Liam G., Australia
"6 edges per insert makes this trigon shape extremely efficient. Highly recommended for heavy stainless jobs."

⭐⭐⭐⭐⭐ "Fast Shipping" - Andrej B., Poland
"Best price for authentic Mitsubishi. Arrived in 3 days. Surface finish on our parts is impressive."

Technical Q&A

Q: Can I use MC7025 for Carbon Steel?

A: While it can cut steel, MC7025 is optimized for Stainless Steel. For Carbon Steel, we recommend the MC6025 grade for better tool life.

Q: Does this insert have 6 cutting edges?

A: Yes, as a negative trigon (W-shape) insert, it provides 3 edges per side, totaling 6 usable edges.

Q: What is the benefit of the 1.2mm radius?

A: A larger radius (12) provides a stronger cutting edge and allows for higher feed rates, which is ideal for roughing and medium-heavy machining.

Expert Performance Tip: Stainless Steel Efficiency

For Austenitic Stainless (304/316), always use MC7025. If you are experiencing excessive heat, ensure your coolant pressure is high to prevent the material from work-hardening.

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.