Universal Steel Machining Specialist | SA Medium Chipbreaker | Made in Japan
Product Overview
The Mitsubishi WNMG080404-SA UE6020 is a highly versatile double-sided 80° trigon negative insert designed for General Steel turning. Featuring a sharp 0.4mm corner radius and the classic UE6020 CVD coating, this insert provides an exceptional balance of wear resistance and edge toughness. The SA chipbreaker is specifically engineered for medium cutting, offering stable chip control across a wide range of cutting depths. Whether you are machining carbon steel or alloy steel, these indexable carbide inserts deliver consistent performance and extended tool life on your CNC machine.
ISO Designation Identification
W Trigon 80°
N Negative 0°
M Tolerance
G Hole/Chip
08 IC 12.7mm
04 Thick 4.76mm
04 Rad 0.4mm
SA Med-Cut
Technical Specifications: Metric vs. Imperial
Technical Feature
Metric (ISO)
Imperial (ANSI)
Model Number
WNMG 080404-SA
WNMG 431-SA
Inscribed Circle (IC)
12.7 mm
0.500 inch
Corner Radius
0.4 mm
0.016 inch
Grade: UE6020 (The Workhorse for Steel)
The UE6020 grade is one of the most reliable CVD coated carbide grades for Steel (P-Class). It is designed to resist flank wear and plastic deformation, ensuring stable machining even during moderate interruptions. Its versatility makes it the "go-to" choice for shops that require a single grade to handle various steel types with efficiency and high precision machining standards.
SA Medium-Cut Chipbreaker
The SA chipbreaker features a balanced rake angle and chip pocket width. It is specifically optimized for medium-duty turning. In CNC turning, the SA geometry prevents chip bird-nesting by breaking chips into small, manageable curls at moderate feed rates, protecting the workpiece surface and your machine's spindle.
⭐⭐⭐⭐⭐ "Great All-Rounder" - James K., USA "I use these for general turning on 1045 steel. They are incredibly reliable and the tool life is very consistent."
⭐⭐⭐⭐⭐ "Stable Chip Breaking" - Marco V., Italy "The SA breaker works perfectly. No more long chips wrapping around the tool. Excellent quality from Japan."
⭐⭐⭐⭐ "Dependable Performance" - Hiroshi N., Japan "Consistent results every time. We've been using UE6020 for years and it's our first choice for steel parts."
⭐⭐⭐⭐⭐ "Best Cost per Edge" - Liam S., Australia "With 6 usable edges, the WNMG trigon is unbeatable for value. UE6020 is very tough on the edges."
⭐⭐⭐⭐⭐ "Authentic Inserts" - Pavel D., Poland "Received original boxes. Performance matches the Mitsubishi catalog perfectly. Very satisfied with the speed of shipping."
Technical Q&A
Q: Can I use UE6020 for Stainless Steel?
A: UE6020 is optimized for Steel (P-Class). For high-volume stainless steel turning, we recommend the MC7025 grade for better chemical stability.
Q: What is the benefit of the 0.4mm corner radius?
A: A 0.4mm radius is excellent for light to medium cutting. It reduces cutting force, which helps prevent vibration on slender parts while still providing a good finish.
Q: How many cutting edges does this insert have?
A: WNMG is a double-sided trigon, giving you 6 usable cutting edges, making it 50% more efficient than standard 4-edge diamond inserts.
Expert Machining Tip: UE6020 vs. MC6025
For General Steel turning and versatility, UE6020 is the standard. If you are doing High-Efficiency Finishing on high-alloy steels, consider upgrading to the newer MC6025 grade.
Mitsubishi WNMG080404-SA UE6020 Carbide Turning Inserts for Steel (10pcs)
$92.26
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