Mitsubishi WNMG080408-MS MP735 Stainless Steel Turning Inserts (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-MS MP735

High-Performance Stainless Steel Turning | 100% Made in Japan

Product Overview

The Mitsubishi WNMG080408-MS MP735 is a premium, double-sided 80° trigon negative insert specifically engineered for the challenges of stainless steel turning. Utilizing the advanced MP735 PVD coating technology, this insert excels in preventing built-up edge and thermal cracking. Combined with the sharp MS chipbreaker and a versatile 0.8mm corner radius, this indexable carbide insert provides world-class chip control and an exceptional surface finish on austenitic, duplex, and heat-resistant stainless steels.

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
MS
Medium-Sharp

Technical Specifications: Metric vs. Imperial

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

Specialized Grade: MP735 (PVD Coated Toughness)

The MP735 grade represents Mitsubishi's advanced PVD coating solution for stainless steel. Unlike traditional CVD coatings, the PVD process allows for a thinner, smoother, and sharper cutting edge. MP735 is specifically formulated to handle the high heat and stickiness of stainless steel, providing superior resistance to built-up edge (BUE) and maintaining a sharp edge for much longer, which significantly extends tool life in precision machining.

MS Chipbreaker Geometry

The MS (Medium-Sharp) chipbreaker is designed for finishing and light-to-medium cutting. It balances edge strength with sharpness, making it ideal for materials that tend to work-harden. The MS geometry ensures that chips are broken effectively even at low depths of cut, preventing long, stringy chips from interfering with your CNC lathe operations.

Recommended Cutting Parameters

Optimized for Stainless Steel (M-Class):

  • Cutting Speed (Vc): 100 - 200 m/min (330 - 650 SFM)
  • Feed Rate (f): 0.12 - 0.35 mm/rev (0.005 - 0.014 ipr)
  • Depth of Cut (ap): 0.5 - 3.0 mm

*Pro Tip: For best results on high-nickel alloys, use a stable setup and flood coolant to manage tool temperature.*

Compatible External Tool Holders:

View MWLNR / DWLNR Holders

Global Verified Customer Reviews

⭐⭐⭐⭐⭐ "Great for 316 Stainless" - David R., USA
"The MP735 grade is very impressive. Much better than the older grades on gummy 316. Sharp and durable."

⭐⭐⭐⭐⭐ "Authentic Mitsubishi" - Lars M., Germany
"Exactly what I needed for my CNC job shop. The MS chipbreaker keeps the chips short and the finish shiny."

⭐⭐⭐⭐ "Sharp Cutting Edge" - Kenji T., Japan
"Very low cutting force compared to CVD inserts. Great for thin-walled stainless parts where vibration is an issue."

⭐⭐⭐⭐⭐ "Long Lasting" - Liam S., Australia
"6 usable edges with the WNMG shape make this very economical. MP735 lasts twice as long as the generic brands."

⭐⭐⭐⭐⭐ "Perfect for Production" - Pavel D., Poland
"Consistent performance across thousands of parts. Fast shipping and the real deal. Highly recommended."

Technical Q&A

Q: Why use PVD (MP735) over CVD (US735) for stainless?

A: PVD MP735 provides a sharper edge and better resistance to adhesion, making it superior for finishing and machining thin parts or gummy alloys.

Q: Is this insert compatible with standard WNMG holders?

A: Yes, it fits all standard MWLNR / DWLNR 2020 or 2525 tool holders designed for WNMG08 (WNMG 43) inserts.

Q: What is the maximum depth of cut for the MS breaker?

A: For the WNMG080408-MS, we recommend a maximum depth of cut of 3.0 mm for optimal stability and chip breaking.

Expert Choice Tip: MP735 vs MC7025

For Interrupted Cuts and difficult-to-machine stainless, MP735 is your best bet. If you have a Stable Setup and want higher speeds for mass production, consider MC7025.

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.