Mitsubishi WNMG080404-MA MP735 Carbide Turning Inserts for Stainless Steel (10pcs)

$83.87 USD

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SKU: WNMG080404-MA MP735
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.