Mitsubishi WNMG060412-MA US735 Carbide Turning Inserts for Stainless Steel - BEYOND

Mitsubishi WNMG060412-MA US735 Carbide Turning Inserts for Stainless Steel

$83.09 USD

Price shown is a starting point. Contact us for a precise quote based on your requirements.

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Description

MITSUBISHI WNMG060412-MA US735

Heavy-Duty Stainless Specialist | Advanced CVD Toughened Coating

Product Overview

The Mitsubishi WNMG060412-MA US735 is a robust, double-sided 80° trigon negative insert specifically engineered for tough stainless steel turning. With a larger 1.2mm nose radius and the industry-proven US735 CVD coating, this insert excels in preventing thermal cracking and notch wear. Designed with the MA chipbreaker, it provides superior edge strength for medium-to-heavy CNC lathe operations, making it the ideal choice for unstable or interrupted cuts in austenitic stainless steels.

ISO Designation Identification

W
Trigon 80°
N
Negative 0°
M
Tolerance
G
Hole/Chip
06
IC 9.525mm
04
Thick 4.76mm
12
Radius 1.2mm
MA
Medium Cut

Technical Specifications: Metric vs. Imperial

Features Metric (ISO) Imperial (ANSI)
Model Number WNMG 060412-MA WNMG 333-MA
Inscribed Circle (IC) 9.525 mm 0.375 inch
Corner Radius 1.2 mm 0.047 inch

Grade: US735 (Stainless Steel Authority)

The US735 grade is a toughened carbide substrate with a specialized CVD coating designed to resist the high heat and adhesive nature of stainless steel machining. It excels in interrupted cuts where other grades might chip. The 1.2mm radius on this model provides extra edge strength for heavy-duty turning.

MA Chipbreaker Geometry

The MA chipbreaker is an ideal choice for medium-range cutting. It features a stable cutting edge that reduces vibration and provides excellent chip control across various feed rates, preventing the common "bird-nesting" issue in stainless alloys.

Recommended Cutting Parameters

Optimized for Stainless Steel (M-Class):

  • Cutting Speed (Vc): 70 - 160 m/min (230 - 525 SFM)
  • Feed Rate (f): 0.18 - 0.45 mm/rev (0.007 - 0.018 ipr)
  • Depth of Cut (ap): 1.0 - 4.0 mm

*Note: Due to the 1.2mm radius, you can achieve higher feed rates than 0.4mm or 0.8mm versions.*

Required Tooling Compatibility:

Shop MWLNR / DWLNR Holders

Customer Feedback

⭐⭐⭐⭐⭐ "Heavy-duty winner" - Mark R., USA
"The 1.2mm radius is perfect for roughing out 304 stainless plates. US735 doesn't crack under heat like my old inserts did."

⭐⭐⭐⭐⭐ "Original & Tough" - Dieter K., Germany
"Genuine Mitsubishi. Stable performance for interrupted cuts. The MA chipbreaker manages chips perfectly."

⭐⭐⭐⭐ "Great Life" - Kenji T., Japan
"Consistent tool life across all 6 edges. Excellent for our production lines."

⭐⭐⭐⭐⭐ "Reliable Tooling" - Liam W., Australia
"Best price I found for US735. Fast shipping and the product works as described for my CNC lathe."

⭐⭐⭐⭐⭐ "Solid Roughing" - Sanjay G., India
"Very stable when machining cast stainless. The coating quality is superior."

Technical Q&A

Q: Why choose a 1.2mm radius over 0.8mm?

A: The 1.2mm radius provides greater edge strength and allows for higher feed rates, making it better for roughing and heavy cuts.

Q: Is this insert double-sided?

A: Yes, this is a negative trigon insert, offering 6 usable cutting edges total.

Q: Can I use this for finishing?

A: It can be used, but due to the large 1.2mm radius, you will need a higher feed rate to break chips, which might affect surface finish. For fine finishing, consider a 0.4mm radius.

Material Choice Tip: US735 vs. MC7025

For General Stainless Steel turning, US735 is the toughened workhorse. If you are doing very high-speed continuous cutting in stable conditions, consider MC7025 for slightly better 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.