Mitsubishi WNMG060404-MA US735 Carbide Turning Inserts for Stainless Steel - BEYOND

Mitsubishi WNMG060404-MA US735 Carbide Turning Inserts for Stainless Steel

$82.33 USD

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Description

MITSUBISHI WNMG060404-MA US735

The Stainless Steel Specialist | Toughened CVD Coated Carbide

Product Overview

The Mitsubishi WNMG060404-MA US735 is a high-performance, double-sided 80° trigon negative insert designed specifically for machining stainless steel. Utilizing the advanced US735 CVD coating, this insert offers exceptional resistance to thermal cracking and notch wear, which are common challenges in austenitic stainless steel turning. 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 conditions.

ISO Designation Identification

W
Trigon 80°
N
Negative 0°
M
Tolerance
G
Hole/Chip
06
IC 9.525mm
04
Thick 4.76mm
04
Radius 0.4mm
MA
Medium Cut

Technical Specifications: Metric vs. Imperial

Feature Metric (ISO) Imperial (ANSI)
Model Number WNMG 060404-MA WNMG 331-MA
Inscribed Circle (IC) 9.525 mm 0.375 inch
Corner Radius 0.4 mm 0.016 inch

Material Grade: US735 (Stainless Specialist)

The US735 grade is a specialized CVD coated carbide designed for interrupted cutting and heavy-duty machining of stainless steel. Its unique multi-layer coating provides excellent resistance to built-up edge (BUE) and work hardening, which are typical issues when turning materials like 304 or 316 stainless steel. This results in consistent precision machining and high reliability.

MA Chipbreaker Performance

The MA chipbreaker is an all-rounder for medium-range cutting. It balances sharp edge performance with strength, providing excellent chip control across a wide range of feed rates. This prevents "bird-nesting" of chips, protecting both the workpiece surface 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): 0.12 - 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 heat buildup on the stainless steel surface.*

Compatible Tool Holders:

Shop MWLNR / DWLNR Turning Tool Holders

Verified Customer Feedback

⭐⭐⭐⭐⭐ "Perfect for 304 Stainless" - Robert T., UK
"I was struggling with chip control on 304, but these MA chipbreakers work like a charm. US735 grade lasts much longer than my previous inserts."

⭐⭐⭐⭐⭐ "Original Mitsubishi Quality" - Marco L., Italy
"Consistent performance in every box. Use these for medium turning and they never disappoint. Fast shipping!"

⭐⭐⭐⭐ "Great Chip Control" - Kenji S., Japan
"Stable tool life in interrupted cuts. The MA geometry is very versatile for various stainless grades."

⭐⭐⭐⭐⭐ "Cost-Effective" - David M., USA
"6 usable edges make these very economical for our shop. US735 is tough."

⭐⭐⭐⭐⭐ "Reliable Delivery" - Andrej P., Poland
"Original packaging and performance is as expected from Mitsubishi. My go-to for CNC turning."

Technical Q&A

Q: Can I use US735 for turning regular carbon steel?

A: While it can cut steel, US735 is optimized for the toughness of stainless steel. For general steel, MC6025 is typically more efficient.

Q: How many cutting edges does this insert have?

A: This is a negative trigon insert, providing a total of 6 cutting edges (3 per side).

Q: What is the main difference between MA and MS chipbreakers?

A: MA is for medium cutting, while MS is optimized for finishing and lighter depths of cut.

Stainless Steel Turning Tip

Stainless steel tends to work-harden quickly. To maximize tool life, always maintain a consistent feed rate and ensure your depth of cut is greater than the work-hardened layer from the previous pass.

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.