Mitsubishi WNMG080412-MA US735 Carbide Turning Inserts for Stainless Steel (10pcs/box) - BEYOND

Mitsubishi WNMG080412-MA US735 Carbide Turning Inserts for Stainless Steel (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-MA US735

Heavy-Duty Stainless Specialist | Superior Edge Strength | Made in Japan

Product Overview

The Mitsubishi WNMG0804012-MA US735 is an industrial powerhouse designed specifically for the heavy-duty turning of stainless steel. Engineered in Japan, it features a large 1.2mm nose radius and the industry-proven US735 CVD coating. This combination excels in high-feed applications and unstable cutting conditions, making it the premier choice for CNC machining of 304, 316, and duplex stainless steels. The MA chipbreaker provides the necessary structural integrity to handle interrupted cuts while maintaining excellent chip control.

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
MA
Medium Cut

Technical Specifications: Metric vs. Imperial

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

Material: US735 (CVD Coated Carbide)

The US735 grade is a specialized toughened carbide with a multi-layer CVD coating specifically designed to combat the high thermal and mechanical stress of stainless steel turning. It effectively resists thermal cracking and notch wear, which are the most common failure modes in CNC turning of stainless materials. This grade is the "problem solver" for interrupted cuts and high-temperature alloys.

MA Geometry (Medium Cutting)

The MA chipbreaker is designed for medium-duty applications. It features a sharp cutting edge that reduces cutting force while the land behind the edge is reinforced to prevent chipping. This makes the Mitsubishi indexable insert highly versatile for varying depths of cut and feed rates.

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 - 4.5 mm

*Note: With a 1.2mm radius, you can push higher feed rates compared to the 0.8mm version.*

Compatible Tool Holders:

Shop MWLNR / DWLNR Holders

Customer Reviews

⭐⭐⭐⭐⭐ "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. Top-tier Japanese quality."

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

⭐⭐⭐⭐ "Great Life" - Kenji T., Japan
"Consistent tool life across all 6 edges. Very stable on our big CNC machines."

⭐⭐⭐⭐⭐ "Fast Delivery" - Liam W., Australia
"Fast shipping and the product is exactly as described. These are definitely made in Japan. Handles our heavy turning jobs well."

⭐⭐⭐⭐⭐ "Solid Roughing" - Sanjay G., India
"Very stable when machining cast stainless. The coating quality is superior and doesn't flake off."

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 superior 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.

Expert Tip: US735 vs. MC7025

For General Stainless Steel turning where stability is uncertain, use US735. If you are doing high-speed continuous turning in very stable conditions, MC7025 may offer 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.