The Cast Iron Machining Workhorse | 100% Made in Japan
Product Overview
The Mitsubishi WNMG080408-MA UC5115 is a high-performance, double-sided 80° trigon negative insert specifically engineered for stable cast iron turning. Manufactured in Japan, the UC5115 CVD coating is designed to provide extreme toughness and wear resistance when machining abrasive gray cast iron (FC) and ductile cast iron (FCD). Featuring a versatile 0.8mm radius and the MA chipbreaker, this indexable carbide insert ensures consistent tool life and exceptional reliability in heavy-duty CNC machining environments.
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
MA Medium Cut
Technical Specifications: Metric vs. Imperial
Feature
Metric (ISO)
Imperial (ANSI)
Model Number
WNMG 080408-MA
WNMG 432-MA
Inscribed Circle (IC)
12.7 mm
0.500 inch
Corner Radius
0.8 mm
0.031 inch
UC5115: The Cast Iron Specialist
The UC5115 grade is Mitsubishi's specialized CVD solution for the K-Class material group. Cast iron turning often faces issues with flank wear and micro-chipping due to material abrasiveness. UC5115 uses a unique substrate and coating combination that provides high-speed capability while maintaining the edge toughness required for Cast Iron Machining. It excels in both continuous and light interrupted cuts in FC and FCD materials.
MA Chipbreaker Performance
The MA chipbreaker is an all-purpose medium-range geometry. In cast iron applications, it focuses on reducing cutting resistance and ensuring a high-quality surface finish. The land design is reinforced to withstand the high pressure of CNC turning, ensuring that the indexable carbide insert maintains its geometry throughout the production run.
⭐⭐⭐⭐⭐ "Reliable for Ductile Iron" - Mark S., USA "UC5115 is our first choice for ductile iron hubs. The wear is very predictable, which is great for lights-out machining."
⭐⭐⭐⭐⭐ "Excellent Finish" - Hans W., Germany "Best price for authentic Mitsubishi. We saw a significant improvement in surface finish over our previous CVD grade."
⭐⭐⭐⭐ "Very Durable" - Kenji T., Japan "Made in Japan quality. We use these for gray iron batches and the edge stays sharp for a long time."
⭐⭐⭐⭐⭐ "Economic 6 Edges" - Liam G., Australia "WNMG is the best value trigon. UC5115 handles the high heat of cast iron turning perfectly. Fast shipping too."
⭐⭐⭐⭐⭐ "Predictable Performance" - Andrej B., Poland "No surprises with these inserts. They just work. Highly recommended for any cast iron production line."
Technical Q&A
Q: Can I use UC5115 for Steel?
A: UC5115 is specifically optimized for Cast Iron. For Steel turning, we recommend MC6025 or UE6110 for better chip control and tool life.
Q: What is the benefit of the Trigon (W-shape) design?
A: The WNMG shape provides 6 usable cutting edges (3 per side), offering much better economy than standard 4-edged diamond inserts.
Q: Does this grade handle interrupted cuts?
A: Yes, UC5115 is designed for stability and can handle light to medium interruptions in cast iron materials without catastrophic edge failure.
Expert Choice Tip: UC5115 vs MC5005
For High-Speed Finishing in Gray Cast Iron, consider MC5005. For General Purpose & Stable Turning in both Gray and Ductile Iron, UC5115 is the industry standard for reliability.
Mitsubishi WNMG080408-MA UC5115 Carbide Turning Inserts for Cast Iron (10pcs)
$92.26
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When choosing CNC cutting tools, check the full model code, dimensions, grade and selected variant before ordering. Do not rely on the product image alone.
For carbide inserts, tool holders, drills and end mills, compare the mounting dimensions, connection type and manufacturer's specifications with your holder or machine. If you are unsure, share your existing part number and machining application with us before ordering.
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