Mitsubishi WNMG080408-GK MC5015 Cast Iron Turning Inserts (10pcs/box) - BEYOND

Mitsubishi WNMG080408-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 WNMG080408-GK MC5015

High-Speed Cast Iron Turning Specialist | 100% Made in Japan

Product Overview

The Mitsubishi WNMG080408-GK MC5015 is a high-performance, double-sided 80° trigon negative insert precision-engineered for cast iron machining. Powered by the MC5015 CVD coating, this insert excels in gray and ductile iron turning by providing extreme abrasion resistance. Featuring the GK chipbreaker and a standard 0.8mm corner radius, this indexable carbide insert ensures stable edge reliability and superior tool life during high-speed CNC machining operations.

ISO Designation Identification

W
Trigon 80°
N
Negative 0°
M
Tolerance
G
Hole/Chip
08
IC 12.7mm
04
Thick 4.76mm
08
Radius 0.8mm
GK
Stable Cutting

Technical Specifications: Metric vs. Imperial

Technical Feature Metric (ISO) Imperial (ANSI)
Model Number WNMG 080408-GK WNMG 432-GK
Inscribed Circle (IC) 12.7 mm 0.500 inch
Corner Radius 0.8 mm 0.031 inch

Advanced Grade: MC5015 (Cast Iron Wear Expert)

The MC5015 grade is Mitsubishi's specialized CVD solution for gray and ductile cast iron. It features an extra-thick Al2O3 layer that provides industry-leading thermal barrier protection. This grade is specifically designed to handle the high friction and abrasive nature of iron castings, ensuring consistent performance on your CNC lathe even during continuous high-speed runs.

GK Chipbreaker Geometry

The GK chipbreaker is designed for high stability and edge reliability. Since cast iron produces short, brittle chips, the GK geometry focuses on protecting the cutting edge from sudden chipping. It is optimized for general-purpose to heavy turning, providing excellent process security even on rough casting surfaces.

Recommended Cutting Parameters

Optimized for Cast Iron (K-Class):

  • Cutting Speed (Vc): 150 - 450 m/min (490 - 1475 SFM)
  • Feed Rate (f): 0.15 - 0.45 mm/rev (0.006 - 0.018 ipr)
  • Depth of Cut (ap): 0.5 - 3.5 mm

*Pro Tip: Higher cutting speeds help the MC5015 grade's coating reach optimal efficiency.*

Global Customer Feedback

⭐⭐⭐⭐⭐ "Workhorse for Cast Iron" - David R., USA
"MC5015 is my go-to for engine blocks. The tool life is double what I was getting with my previous brand. Very impressed."

⭐⭐⭐⭐⭐ "Original & Reliable" - Stefan M., Germany
"Always trust Mitsubishi for cast iron. The GK breaker is extremely stable even with interrupted cuts on rough castings."

⭐⭐⭐⭐ "Consistency is Key" - Kenji T., Japan
"Very predictable wear patterns. Makes automated production much easier. Original Japanese quality."

⭐⭐⭐⭐⭐ "Great Value" - Lucas G., Brazil
"6 edges on a trigon insert is a life saver for the budget. MC5015 performs beautifully on ductile iron."

⭐⭐⭐⭐⭐ "Highly Recommended" - Andrej P., Poland
"Fast shipping and authentic product. These inserts stay sharp much longer in abrasive iron work."

Technical Q&A

Q: Can I use MC5015 for Stainless Steel?

A: MC5015 is specialized for Cast Iron (K-Class). For stainless steel, we recommend US735 or MC7025 grades.

Q: Is the GK chipbreaker suitable for light finishing?

A: The GK breaker is optimized for medium to heavy stable cutting. For fine finishing, you might consider the MK chipbreaker.

Q: How many cutting edges are on this insert?

A: WNMG is a double-sided trigon, providing a total of 6 usable cutting edges per insert.

Expert Machining Tip: MC5015 vs MC5005

For General Purpose Cast Iron turning, MC5015 is your best choice. If you are doing High-Speed Finishing of Gray Iron, consider MC5005 for maximum 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.