Mitsubishi WNMG080408-MA US735 Carbide Turning Inserts for Stainless Steel - BEYOND

Mitsubishi WNMG080408-MA US735 Carbide Turning Inserts for Stainless Steel

$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 US735

The Ultimate Stainless Steel Specialist | Made in Japan

Product Overview

The Mitsubishi WNMG080408-MA US735 is a premium, double-sided 80° trigon negative insert, globally recognized for its excellence in stainless steel turning. Manufactured in Japan, it features the industry-leading US735 CVD coating, providing extreme toughness and resistance to thermal shock. When your CNC lathe demands reliability for medium-range cutting in austenitic stainless steel, the 0.8mm radius and MA chipbreaker provide the perfect balance of edge strength and chip evacuation efficiency.

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

Technical Features 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

High-Performance Material: US735 CVD Grade

The US735 grade is Mitsubishi's specialized solution for heavy-duty stainless turning. This grade utilizes a toughened carbide substrate combined with a multi-layer CVD coating that provides an effective barrier against the high temperatures generated when machining stainless steel. It excels in interrupted cuts and prevents plastic deformation of the cutting edge.

MA Chipbreaker Profile

The MA (Medium-range) chipbreaker is an industry standard for versatility. It balances sharpness for low cutting resistance with reinforcement for edge longevity. It is highly effective at managing chip control in difficult materials, ensuring that chips are broken into manageable sizes, protecting both the workpiece and the indexable tool holder.

Recommended Cutting Parameters

Optimized for Stainless Steel (M-Class):

  • Cutting Speed (Vc): 80 - 180 m/min (260 - 590 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: Ensure consistent coolant application to maximize tool life and prevent built-up edge (BUE).*

Shop Compatible Turning Holders:

Browse MWLNR / DWLNR Holders

Global Verified Customer Reviews

⭐⭐⭐⭐⭐ "Workhorse for our CNC Shop" - Mark R., USA
"The US735 is the only grade we use for 304 and 316 stainless. It handles the toughness without the tip chipping out. Highly recommended."

⭐⭐⭐⭐⭐ "Authentic Japan Quality" - Dieter S., Germany
"Original Mitsubishi inserts. The tool life is double that of the cheaper alternatives. Excellent for heavy stainless operations."

⭐⭐⭐⭐ "Great Chip Control" - Kenji T., Japan
"Consistent performance across all 6 edges. The MA chipbreaker manages chips perfectly in our CNC lathes."

⭐⭐⭐⭐⭐ "Best Price for Original" - Liam J., Australia
"Very fast shipping. The WNMG080408-MA is versatile for our general purpose turning on stainless shafts."

⭐⭐⭐⭐⭐ "Stable Performance" - Ricardo G., Brazil
"US735 coating holds up well against thermal cracking. Even in interrupted cuts, the reliability is top-notch."

Technical Q&A

Q: Why use the W-shape (Trigon) insert?

A: The 80° trigon shape provides the strength of a square insert with the versatility of a rounder shape, offering 6 usable cutting edges total.

Q: Is this insert suitable for roughing stainless steel?

A: Yes, with a 0.8mm radius and the toughened US735 grade, it is ideal for medium to light roughing and general purpose turning.

Q: Does this work for continuous and interrupted cuts?

A: Absolutely. US735 is specifically engineered to resist the mechanical shock and thermal changes found in interrupted cutting.

Material Specialist Tip: US735 vs. MC7025

For General Stainless Steel turning where toughness is key, stick with US735. If you are doing high-speed continuous turning on stable parts, consider MC7025 for enhanced crater wear 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.