Heavy-Duty Cast Iron Machining | 1.2mm Radius for High Feed | Made in Japan
Product Overview
The Mitsubishi WNMG080412 UC5115 is a robust, double-sided 80° trigon negative insert specifically engineered for Heavy-Duty Cast Iron turning. Built with the specialized UC5115 CVD coating, this insert offers incredible resistance to the abrasive wear typical of gray and ductile iron. The 1.2mm corner radius (R1.2) provides superior edge strength, allowing for significantly higher feed rates and stable rough machining. Whether you are dealing with rough casting skins or high-volume CNC machining, these indexable carbide inserts provide the reliability and long tool life your shop demands.
ISO Designation Identification
W Trigon 80°
N Negative 0°
M Tolerance
G Hole/Chip
08 IC 12.7mm
04 Thick 4.76mm
12 Rad 1.2mm
Technical Specifications: Metric vs. Imperial
Technical Feature
Metric (ISO)
Imperial (ANSI)
Model Number
WNMG 080412
WNMG 433
Inscribed Circle (IC)
12.7 mm
0.500 inch
Corner Radius
1.2 mm
0.047 inch
Advanced Grade: UC5115 (Cast Iron Specialist)
The UC5115 grade is a specialized CVD coated carbide designed for high-performance Cast Iron (K-Class) turning. It combines a tough carbide substrate with a thick, heat-resistant coating layer that prevents flank wear and thermal cracking. This makes it exceptionally durable when machining gray and nodular cast iron at higher speeds, ensuring your CNC lathe maintains peak efficiency with fewer tool changes.
Heavy-Duty 1.2mm Corner Radius
The 1.2mm radius (R1.2) is the key to this insert's rough turning capability. A larger radius increases edge strength and allows the heat to dissipate more effectively, preventing the tip from chipping during heavy metal removal. It also enables high feed rates while maintaining a stable surface profile on larger industrial components.
*Pro Tip: Thanks to the 1.2mm radius, you can push the feed rate higher to increase productivity without compromising the structural integrity of the edge.*
⭐⭐⭐⭐⭐ "Workhorse for Castings" - Tom B., USA "The 1.2mm radius on these UC5115 inserts is a beast. We rough out ductile iron castings all day and the tool life is outstanding."
⭐⭐⭐⭐⭐ "Excellent Heat Stability" - Jürgen K., Germany "Consistent results even at high speeds. Mitsubishi's Japanese manufacturing quality shows in every box."
⭐⭐⭐⭐ "Great for Heavy Feed" - Shinji A., Japan "Very stable in rough turning. The trigon shape gives us 6 edges which really helps reduce our overhead costs."
⭐⭐⭐⭐⭐ "Reliable Performance" - Gary M., UK "Fast shipping and authentic product. These inserts handle scale and interruptions on gray iron perfectly."
⭐⭐⭐⭐⭐ "Strong Edge" - Mateo L., Brazil "The R1.2 tip is very strong. No chipping even on heavy cuts. Best grade for iron machining by far."
Technical Q&A
Q: Can I use UC5115 for Steel?
A: It is primarily optimized for Cast Iron (K-Class). For Steel (P-Class), you will get better performance from UE6110 or MC6025 grades.
Q: Why choose a 1.2mm radius?
A: A larger radius (R1.2) provides more edge strength and better heat dissipation, making it ideal for rough turning and high-feed applications.
Q: How many cutting edges are on this insert?
A: WNMG is a double-sided trigon, giving you 6 usable cutting edges, making it significantly more economical than 4-edge inserts.
Expert Machining Tip: UC5115 vs. UC5105
Use UC5115 for versatile cast iron turning including interruptions. If you are doing continuous, Ultra-High-Speed turning on gray iron only, UC5105 offers maximum wear resistance.
Mitsubishi WNMG080412 UC5115 Carbide Turning Inserts for Cast Iron (10pcs/box)
$92.26
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