Heavy-Duty Steel Machining Specialist | 1.2mm Radius | Made in Japan
Product Overview
The Mitsubishi WNMG080412-GH UE6020 is a high-strength, double-sided 80° trigon negative insert precision-engineered for aggressive steel turning. Combining the legendary UE6020 CVD coating with a reinforced 1.2mm corner radius, this insert excels in heavy-duty roughing of carbon and alloy steels. The GH chipbreaker is specifically designed to handle high mechanical loads, making this indexable carbide insert the top choice for CNC machining professionals seeking maximum productivity and long tool life in unstable or heavy cutting conditions.
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
GH Roughing
Technical Specifications: Metric vs. Imperial
Technical Feature
Metric (ISO)
Imperial (ANSI)
Model Number
WNMG 080412-GH
WNMG 433-GH
Inscribed Circle (IC)
12.7 mm
0.500 inch
Corner Radius
1.2 mm
0.047 inch
Advanced Grade: UE6020 (The Steel Roughing Expert)
The UE6020 grade is a dedicated CVD solution for general steel turning. It features a specialized coating layer that provides excellent heat resistance and reduces friction at the cutting edge. This grade is optimized for continuous and interrupted cutting of P-Class steel, offering high resistance to plastic deformation. For professionals looking for a long-lasting carbide insert in high-volume production, UE6020 is the industry standard.
GH Chipbreaker Geometry
The GH (General Heavy) chipbreaker is designed with a high-strength edge for stable cutting. Paired with the large 1.2mm radius, it is perfect for heavy-duty machining where deep cuts and high feeds are required. The GH breaker excels in chip control on carbon steels and provides the necessary process security to protect your CNC lathe spindle and tool holder from excessive vibration.
⭐⭐⭐⭐⭐ "Heavy Duty King" - Robert K., USA "The 1.2mm radius on these UE6020 inserts is a beast for roughing out 4140 shafts. They hold up under heat much better than other brands."
⭐⭐⭐⭐⭐ "Reliable Performance" - Stefan M., Germany "Very stable inserts for high-feed work. The 6 edges make the cost-per-edge very economical for our shop."
⭐⭐⭐⭐ "Consistent Quality" - Kenji Y., Japan "Always rely on Mitsubishi for our CNC production. Predictable tool life and zero issues with chip management."
⭐⭐⭐⭐⭐ "Perfect for Roughing" - Liam G., Australia "UE6020 grade is a workhorse. Arrived quickly and performing great on mild steel fabrications."
⭐⭐⭐⭐⭐ "Fast Shipping" - Andrej P., Poland "Original packaging, authentic product. These inserts stay sharp much longer in heavy-duty turning."
Technical Q&A
Q: Can I use UE6020 for Cast Iron?
A: UE6020 is optimized for Steel (P-Class). For cast iron, we recommend UC5115 or MC5015 grades for superior life.
Q: Why use a 1.2mm radius over 0.8mm?
A: A 1.2mm radius (12) offers a stronger edge and better heat dissipation, allowing for higher feed rates in heavy roughing passes.
Q: How many edges does this insert have?
A: WNMG is a double-sided trigon, giving you 6 usable cutting edges, providing 50% more value than a standard CNMG.
Expert Machining Tip: UE6020 vs MC6025
For General Steel Machining and interrupted cuts, UE6020 is your best choice. For High-Speed Finishing of clean steels, consider MC6025 for peak performance.
Mitsubishi WNMG080412-GH UE6020 Carbide Turning Inserts for Steel (10pcs/box)
$92.26
Need Help With BEYOND Inserts?
Looking for a BEYOND equivalent, alternative grade, or sample catalog? Our CNC specialists have helped 50+ manufacturers in aerospace, automotive, and medical machining source the right tooling at 30–50% lower cost than OEM prices.
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.
Check the product listing for the selling unit, pack quantity and included components. If it is unclear whether the price is per piece or per pack, or whether a tool body and inserts are sold separately, contact us before purchasing.
Select cutting speed, feed rate and depth of cut using the relevant manufacturer's recommendations for your tool model, workpiece material, machine conditions and coolant method. The same settings are not suitable for every product or application.
Our automatic quantity discount is 6% off for 2–9 items and 12% off for 10 or more items, based on the total product quantity in the cart. Other offers may not combine with this discount; check the applicable offer conditions.
According to our shipping policy, orders are typically processed and shipped within 1–3 business days after confirmation. Delivery generally takes 5–20 business days, depending on your destination and shipping method. Customs clearance or unforeseen delays may affect delivery times. A tracking number is sent by email after shipment.
Choosing a selection results in a full page refresh.
