Mitsubishi WNMG080404-MA US735 Carbide Turning Inserts for Stainless Steel - BEYOND

Mitsubishi WNMG080404-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 WNMG080404-MA US735

Premium Stainless Steel Specialist | Made in Japan

Product Overview

The Mitsubishi WNMG080404-MA US735 is a high-performance, double-sided 80° trigon negative insert designed for the precision machining of stainless steel. Manufactured in Japan, this insert utilizes the advanced US735 CVD coating, which offers world-class resistance to thermal cracking and notch wear. Equipped with the MA chipbreaker, it is the premier choice for medium-duty CNC lathe operations, ensuring stable chip control and extended tool life in demanding austenitic stainless materials.

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 Grade: US735 (The Stainless Workhorse)

The US735 grade is a toughened carbide grade with a multi-layer CVD coating. It is specifically balanced for interrupted cutting and heavy-duty stainless steel machining. Its high resistance to built-up edge (BUE) ensures that parts like 304/316 shafts maintain a high-quality surface finish. This indexable insert provides reliability where other coatings fail due to heat.

MA Chipbreaker Profile

The MA chipbreaker is an all-rounder for medium-range cutting. It provides excellent chip breaking over a wide range of feed rates, protecting the workpiece and ensuring the CNC lathe operator can run at higher speeds without fearing long, dangerous stringy chips.

Recommended Cutting Parameters

Optimized for Stainless Steel (M-Class):

  • Cutting Speed (Vc): 80 - 180 m/min (260 - 590 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: Ensure sufficient coolant flow to prevent work hardening on the stainless steel surface.*

Compatible Tool Holders:

Shop MWLNR / DWLNR Turning Tool Holders

Customer Reviews & Feedback

⭐⭐⭐⭐⭐ "Made in Japan Quality" - Kenji O., Japan
"Consistent performance as expected from original Mitsubishi inserts. The US735 is very stable on our CNC lines."

⭐⭐⭐⭐⭐ "Best for 316 Stainless" - Mark T., USA
"I was having trouble with thermal cracking using other brands. Switched to WNMG080404-MA US735 and the tool life tripled."

⭐⭐⭐⭐ "Great Chip Control" - Lars S., Germany
"MA geometry is very reliable. No more bird-nesting of chips on my lathe. Good price for the quality."

⭐⭐⭐⭐⭐ "Fast Shipping" - Liam W., Australia
"Authentic inserts in original packaging. These Japanese tools are just better than the clones."

⭐⭐⭐⭐⭐ "Cost-Effective" - Andrej P., Poland
"6 usable edges make these trigon inserts a very smart choice for our production costs. US735 is tough."

Technical Q&A

Q: Can I use this for roughing?

A: While it can handle light roughing, the 0.4mm radius is optimized for medium cutting and finishing. For heavy roughing, consider a 0.8mm or 1.2mm radius.

Q: Does this come with original Mitsubishi packaging?

A: Yes, we only supply 100% original Mitsubishi inserts Made in Japan with full traceability.

Q: What is the benefit of the US735 coating?

A: It is a CVD coating specifically designed for stainless steel to prevent the tool from overheating and the material from sticking to the edge.

CNC Performance Tip: Material Choice

For Stainless Steel, use US735 for its toughness. If you are predominantly machining Cast Iron, we recommend switching to UC5115 for better wear resistance. Match your grade to your workpiece for 50% more tool life!

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.