Mitsubishi WNMG080408-MA MP735 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 WNMG080408-MA MP735

High-Precision PVD Stainless Steel Specialist | 100% Made in Japan

Product Overview

The Mitsubishi WNMG080408-MA MP735 is a next-generation, double-sided 80° trigon negative insert optimized for the precision turning of stainless steel. Engineered in Japan, it utilizes the advanced MP735 PVD coating, which provides a sharper cutting edge and higher adhesion resistance compared to traditional CVD grades. Featuring the MA chipbreaker and a robust 0.8mm radius, this indexable carbide insert is ideal for medium-duty CNC machining where maintaining tight tolerances and a superior surface finish on austenitic stainless steels is critical.

ISO Designation Identification

W
Trigon 80°
N
Negative 0°
M
Tolerance
G
Hole/Chip
08
IC 12.7mm
04
Thick 4.76mm
08
Radius 0.8mm
MA
Medium Cut

Technical Specifications: Metric vs. Imperial

Feature Metric (ISO) Imperial (ANSI)
Model Number WNMG 080408-MA WNMG 432-MA
Inscribed Circle (IC) 12.7 mm 0.500 inch
Corner Radius 0.8 mm 0.031 inch

Advanced Grade: MP735 (PVD Technology)

The MP735 grade represents a breakthrough in PVD (Physical Vapor Deposition) coating. While CVD grades focus on thickness, MP735 focuses on edge toughness and the prevention of built-up edge (BUE). This makes it the superior choice for high-precision stainless steel machining, where material "sticking" can ruin surface quality. It maintains a sharper edge for longer, reducing cutting forces and vibrations.

MA Chipbreaker Geometry

The MA chipbreaker is an all-purpose medium-cutting geometry. It balances a sharp cutting action with a land that reinforces the edge against chipping. It is specifically designed to handle the difficult chip control requirements of gummy stainless steels, ensuring chips break cleanly and do not wrap around the CNC turning tool holder.

Recommended Cutting Parameters

Optimized for Stainless Steel (M-Class):

  • Cutting Speed (Vc): 90 - 210 m/min (295 - 690 SFM)
  • Feed Rate (f): 0.15 - 0.40 mm/rev (0.006 - 0.016 ipr)
  • Depth of Cut (ap): 0.8 - 3.5 mm

*Note: For finishing passes, the higher speed range of MP735 will yield a mirror-like surface finish.*

Compatible Tooling:

Shop MWLNR / DWLNR Holders

Global Customer Feedback

⭐⭐⭐⭐⭐ "PVD makes the difference" - James H., USA
"I was using US735, but the MP735 gives me a much better finish on 316 stainless. The edge stays sharper for precision work."

⭐⭐⭐⭐⭐ "Authentic Japan Tooling" - Lars E., Sweden
"Exactly what I needed for our CNC lathe production. These Mitsubishi inserts are incredibly consistent."

⭐⭐⭐⭐ "Great Chip Breaking" - Sato K., Japan
"The MA geometry works very well. No bird-nesting on the spindle even with higher feed rates."

⭐⭐⭐⭐⭐ "Solid Value" - Andrej B., Poland
"6 usable edges per insert makes these very cost-effective. Shipping was fast and product is 100% original."

⭐⭐⭐⭐⭐ "Best for Stainless" - Giovanni R., Italy
"Zero issues with notch wear. The MP735 coating is the best I've tried for medium-duty stainless turning."

Technical Q&A

Q: Can I use this for roughing?

A: It is excellent for medium roughing and general turning. For extremely heavy, interrupted roughing, a CVD grade like US735 might be more robust, but MP735 offers better precision.

Q: Is this insert compatible with standard MWLNR holders?

A: Yes, it is a standard ISO WNMG 080408 insert and fits all MWLNR/DWLNR turning holders of the corresponding size.

Q: What makes this better for stainless than carbon steel?

A: The MP735 coating is chemically formulated to resist the adhesive nature of stainless steel, whereas carbon steel grades focus more on crater wear resistance.

CNC Expert Tip: CVD vs. PVD for Stainless

Use MP735 (PVD) for high surface finish and sharp precision. Use US735 (CVD) for heavy metal removal and deep interrupted cuts. Matching the coating to your cut type can extend tool life by 30-50%!

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.