Mitsubishi WNMG080404-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 WNMG080404-MA MP735

PVD Coated Stainless Steel Specialist | 100% Made in Japan

Product Overview

The Mitsubishi WNMG080404-MA MP735 is a high-precision, double-sided 80° trigon negative insert optimized for stainless steel turning. Unlike the older CVD grades, the MP735 PVD coating provides superior edge sharpness and toughness, making it exceptional for preventing built-up edge (BUE) in austenitic stainless steels. Engineered in Japan, this insert features the MA chipbreaker, specifically designed for medium-duty CNC machining where chip control and surface finish are critical.

ISO Designation Identification

W
Trigon 80°
N
Negative 0°
M
Tolerance
G
Hole/Chip
08
IC 12.7mm
04
Thick 4.76mm
04
Radius 0.4mm
MA
Medium Cut

Technical Specifications: Metric vs. Imperial

Feature Metric (ISO) Imperial (ANSI)
Model Number WNMG 080404-MA WNMG 431-MA
Inscribed Circle (IC) 12.7 mm 0.500 inch
Corner Radius 0.4 mm 0.016 inch

Material Excellence: MP735 PVD Grade

The MP735 grade is Mitsubishi's next-generation PVD coated carbide, specifically formulated for difficult-to-cut stainless steels. Its unique multi-layer PVD technology offers incredible adhesion resistance, preventing the "sticking" of stainless steel chips to the cutting edge. This ensures high dimensional accuracy and exceptional surface finishes over long production cycles.

MA Chipbreaker Performance

The MA chipbreaker features a sharp but stable edge profile optimized for a broad range of medium-duty turning. It effectively manages chip control in gummy materials like 304 and 316 stainless, reducing vibration and protecting your indexable tool holder from excessive wear.

Recommended Cutting Parameters

Optimized for Stainless Steel (M-Class):

  • Cutting Speed (Vc): 90 - 200 m/min (295 - 655 SFM)
  • Feed Rate (f): 0.12 - 0.30 mm/rev (0.005 - 0.012 ipr)
  • Depth of Cut (ap): 0.5 - 3.0 mm

*Note: MP735 allows for slightly higher speeds than US735 in finishing applications.*

Compatible Turning Holders:

Shop MWLNR / DWLNR Tool Holders

Global Verified Reviews

⭐⭐⭐⭐⭐ "Smoothest Finish on 316" - James K., UK
"Switched from US735 to MP735 for our finishing passes. The PVD coating really helps with the surface quality. Excellent Japanese tooling."

⭐⭐⭐⭐⭐ "Reliable CNC Inserts" - Carlos M., Spain
"Consistent tool life. The MA chipbreaker handles the medium cuts perfectly on our CNC lathe."

⭐⭐⭐⭐ "Great for Small Batches" - Yuki S., Japan
"Very sharp edges. Good for precision work on small stainless components."

⭐⭐⭐⭐⭐ "Authentic Mitsubishi" - Mark T., Canada
"Arrived in original yellow boxes. These 80 degree trigon inserts are versatile and much cheaper per edge than CNMG."

⭐⭐⭐⭐⭐ "No more Edge Build-up" - Hans W., Germany
"The MP735 coating is fantastic. We stopped seeing the material welding to the tip. Saved us a lot of downtime."

Technical Q&A

Q: What is the main difference between MP735 and US735?

A: MP735 is a PVD coating, which is thinner and sharper, making it better for precision and preventing adhesion. US735 is CVD, which is thicker and better for heavy, interrupted roughing.

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: Is it suitable for dry cutting?

A: For stainless steel, we always recommend high-pressure coolant to manage heat, though the MP735 coating is designed to handle high thermal loads.

CNC Performance Tip: Grade Comparison

For General Stainless Steel (304, 316), use MP735 for best surface quality. If you are dealing with Heat Resistant Alloys (Inconel, Titanium), consider switching to MP9015 for specialized heat resistance.

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.