Mitsubishi WNMG080404-GK MC5015 Cast Iron Turning Inserts (10pcs/box) - BEYOND

Mitsubishi WNMG080404-GK MC5015 Cast Iron 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 WNMG080404-GK MC5015

Cast Iron Machining Specialist | High-Speed Performance | Made in Japan

Product Overview

The Mitsubishi WNMG080404-GK MC5015 is a high-performance, double-sided 80° trigon negative insert specifically engineered for the unique challenges of cast iron turning. Utilizing the advanced MC5015 CVD coating technology, this insert provides industry-leading wear resistance against abrasive materials like gray and ductile iron. Combined with the robust GK chipbreaker and a precise 0.4mm corner radius, this indexable carbide insert ensures stable CNC machining and extended tool life in high-speed applications.

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
GK
Stable Cutting

Technical Specifications: Metric vs. Imperial

Technical Feature Metric (ISO) Imperial (ANSI)
Model Number WNMG 080404-GK WNMG 431-GK
Inscribed Circle (IC) 12.7 mm 0.500 inch
Corner Radius 0.4 mm 0.016 inch

Advanced Grade: MC5015 (Cast Iron Excellence)

The MC5015 grade is Mitsubishi's premier CVD solution for high-speed cast iron machining. It features an extra-thick Al2O3 (Alumina) layer which provides incredible thermal barrier protection and abrasion resistance. This grade is specifically designed to combat the "sand" and abrasive particulates found in cast iron, resulting in significantly more consistent tool life compared to general-purpose grades.

GK Chipbreaker Geometry

The GK chipbreaker is optimized for stable cutting and high edge reliability. Cast iron often produces short, brittle chips, but the GK geometry focuses on preventing edge chipping and managing heat dissipation. The 0.4mm (04) corner radius is perfect for precision machining where a high degree of dimensional accuracy and lower cutting forces are needed.

Recommended Cutting Parameters

Optimized for Cast Iron (K-Class):

  • Cutting Speed (Vc): 150 - 450 m/min (490 - 1470 SFM)
  • Feed Rate (f): 0.10 - 0.30 mm/rev (0.004 - 0.012 ipr)
  • Depth of Cut (ap): 0.5 - 3.0 mm

*Pro Tip: MC5015 performs best at higher speeds where the coating can effectively dissipate heat from the tool-chip interface.*

Compatible Holders:

Shop MWLNR / DWLNR 08 Holders

Global Verified Customer Reviews

⭐⭐⭐⭐⭐ "Outstanding Wear Resistance" - Mark T., USA
"Switched to MC5015 for our ductile iron brake rotors. We're getting 40% more parts per edge than our previous supplier. Highly recommend."

⭐⭐⭐⭐⭐ "Perfect for High Speed" - Lars H., Germany
"We run these at 400 m/min on gray iron. The finish is consistent and the insert doesn't burn out. Original quality."

⭐⭐⭐⭐ "Very Stable" - Kenji S., Japan
"The GK breaker is very reliable. No sudden chipping even when the casting surface is rough. Very good for production."

⭐⭐⭐⭐⭐ "Great Finish on Castings" - Liam F., Australia
"The 0.4mm radius gives us the precision we need for finishing passes. MC5015 is a beast in iron. 6 edges per insert is amazing."

⭐⭐⭐⭐⭐ "Fast Shipping" - Pavel D., Poland
"Arrived quickly and in original Mitsubishi packaging. Consistent performance every box. Five stars."

Technical Q&A

Q: Can I use MC5015 for Steel?

A: MC5015 is specialized for Cast Iron (K-Class). For steel, we recommend MC6025 or UE6110 for better results.

Q: Is the 0.4mm radius good for roughing?

A: The 0.4mm (04) radius is best for finishing to light-medium work. For heavy roughing, a 0.8mm or 1.2mm radius is typically preferred.

Q: Why is WNMG better than CNMG?

A: Both are 80° trigon/diamond, but WNMG offers 6 usable edges compared to 4 on CNMG, providing 50% more value per insert.

Expert Machining Tip: MC5015 vs MC5005

For High-Speed General Cast Iron machining, MC5015 is your best choice. If you are specifically focused on Continuous High-Speed Cutting of Gray Iron, consider MC5005 for even higher 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.