Mitsubishi WNMG080412-MS US735 Stainless Steel Turning Inserts (10pcs/box) - BEYOND

Mitsubishi WNMG080412-MS US735 Stainless Steel Turning Inserts (10pcs/box)

$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 WNMG080412-MS US735

High-Strength Stainless Steel Turning Specialist | 100% Made in Japan

Product Overview

The Mitsubishi WNMG080412-MS US735 is a heavy-duty, double-sided 80° trigon negative insert precision-engineered for stainless steel turning. Optimized for demanding CNC machining environments, the US735 CVD coating provides exceptional resistance to thermal cracking and adhesive wear—common issues when cutting gummy austenitic or duplex stainless steels. Featuring a robust 1.2mm corner radius and the sharp MS chipbreaker, this indexable carbide insert offers maximum edge strength and superior chip control for medium-to-heavy duty precision turning.

ISO Designation Identification

W
Trigon 80°
N
Negative 0°
M
Tolerance
G
Hole/Chip
08
IC 12.7mm
04
Thick 4.76mm
12
Radius 1.2mm
MS
Finishing

Technical Specifications: Metric vs. Imperial

Feature Metric (ISO) Imperial (ANSI)
Model Number WNMG 080412-MS WNMG 433-MS
Inscribed Circle (IC) 12.7 mm 0.500 inch
Corner Radius 1.2 mm 0.047 inch

Advanced Grade: US735 (The Stainless Master)

The US735 grade is Mitsubishi's benchmark for tough-to-machine stainless steel. It features a high-toughness carbide substrate combined with a specialized CVD coating that effectively manages high heat and prevents chemical wear. This grade is specifically designed to handle the abrasive nature of stainless while maintaining an incredibly stable cutting edge, preventing sudden chipping and extending tool life.

MS Chipbreaker Geometry

The MS (Medium-Sharp) chipbreaker is designed for light-to-medium cutting with high surface quality. Despite its sharp geometry, the 1.2mm radius on the WNMG080412 provides the structural integrity needed for heavy-duty turning. It excels at breaking chips in "gummy" materials like 304 and 316 stainless, preventing spindle entanglement during CNC turning.

Recommended Cutting Parameters

Optimized for Stainless Steel (M-Class):

  • Cutting Speed (Vc): 80 - 180 m/min (260 - 590 SFM)
  • Feed Rate (f): 0.15 - 0.45 mm/rev (0.006 - 0.018 ipr)
  • Depth of Cut (ap): 0.5 - 4.0 mm

*Note: Due to the 1.2mm radius, you can achieve higher feed rates while maintaining a high-quality surface finish.*

Compatible Holders:

Shop MWLNR / DWLNR 08 Holders

Global Verified Customer Reviews

⭐⭐⭐⭐⭐ "Tough Radius, Great Finish" - James H., UK
"The 1.2mm radius is perfect for my roughing and semi-finishing passes on 304 stainless. Very durable grade."

⭐⭐⭐⭐⭐ "Reliable Tool Life" - Guenther F., Germany
"Predictable wear. I can run these overnight with confidence. Authentic Japanese quality."

⭐⭐⭐⭐ "Great for Interrupted Cuts" - Hiroshi M., Japan
"The US735 handles heat shocks extremely well. Even with light interruptions, the edge stays intact."

⭐⭐⭐⭐⭐ "Economical 6 Edges" - Liam O., Australia
"WNMG shape gives 6 usable edges. When you factor in the tool life of US735, the cost per edge is unbeatable."

⭐⭐⭐⭐⭐ "Best for Stainless" - Pavel S., Poland
"Highly recommended for CNC shops. Fast shipping and the inserts perform exactly like the catalog says."

Technical Q&A

Q: Why use a 1.2mm radius (12) over 0.8mm (08)?

A: The larger 1.2mm radius provides significantly higher edge strength and allows for higher feed rates, making it ideal for roughing stainless steel.

Q: Is this insert suitable for dry machining?

A: For stainless steel, wet machining with high-pressure coolant is highly recommended to prevent work hardening and to extend tool life.

Q: Can I use this for Duplex Stainless Steel?

A: Yes, US735 is an excellent grade for the high-strength and abrasive properties of Duplex materials.

Expert Machining Tip: US735 vs VP15TF

For High-Volume Stainless Production, use US735. For Universal Shop Flexibility across steel and heat-resistant alloys, consider VP15TF as a versatile alternative.

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.