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Product Overview
The Mitsubishi WNMG080408-MS US735 is a high-efficiency, double-sided 80° trigon negative insert precision-engineered for stainless steel turning. Designed for professional CNC machining, the US735 CVD coating offers exceptional resistance to thermal cracking and adhesive wear—common challenges when machining gummy austenitic stainless steels. Featuring a versatile 0.8mm corner radius and the sharp MS chipbreaker, this indexable carbide insert ensures consistent tool life and an outstanding surface finish in medium-to-light duty precision turning.
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
MS Finishing
Technical Specifications: Metric vs. Imperial
Feature
Metric (ISO)
Imperial (ANSI)
Model Number
WNMG 080408-MS
WNMG 432-MS
Inscribed Circle (IC)
12.7 mm
0.500 inch
Corner Radius
0.8 mm
0.031 inch
Advanced Grade: US735 (Stainless Steel Master)
The US735 grade is Mitsubishi's premier solution for the M-Class (Stainless Steel) material group. Stainless steel is prone to "Built-up Edge" (BUE) and work-hardening. US735 uses a specialized CVD (Chemical Vapor Deposition) coating that provides high thermal shock resistance and edge toughness, making it the most reliable choice for continuous and light-interrupted cuts in 304, 316, and duplex stainless steel.
MS Chipbreaker Performance
The MS (Medium-Sharp) chipbreaker is specifically engineered for finishing and medium-light cutting. In stainless steel applications, the sharp edge of the MS geometry is critical to minimize the cutting pressure and friction heat that leads to material deformation. This ensures stable chip control and prevents "bird-nesting" during automated CNC turning.
⭐⭐⭐⭐⭐ "Reliable on 316 Stainless" - Mark D., USA "The US735 grade is incredibly stable. I've had zero chipping issues since switching for my 316 stainless valve bodies."
⭐⭐⭐⭐⭐ "Excellent Quality" - Dieter K., Germany "Original Mitsubishi product from Japan. Predictable wear patterns and very clean surface finishes on alloy parts."
⭐⭐⭐⭐ "Great Chip Evacuation" - Sato H., Japan "The MS chipbreaker works perfectly. No more long chips wrapping around the spindle during finishing."
⭐⭐⭐⭐⭐ "Economic 6-Edges" - Liam F., Australia "Trigon inserts are a game changer for the budget. 6 edges of premium US735 carbide for this price is a steal."
⭐⭐⭐⭐⭐ "Long Lasting" - Andrej P., Poland "Very long tool life compared to cheaper brands. Perfect for high-volume CNC runs. Fast shipping too."
Technical Q&A
Q: Can I use US735 for Carbon Steel?
A: While it can cut steel, US735 is optimized for Stainless Steel. For better efficiency in carbon steel, MC6025 or UE6110 are recommended.
Q: What is the benefit of the Trigon (W-shape)?
A: The WNMG shape provides 6 usable cutting edges (3 per side), offering much better economy than 4-edged diamond inserts.
Q: Does this grade handle interrupted cuts?
A: Yes, the US735 grade is designed with high toughness specifically to manage thermal shock and light interruptions in stainless materials.
Expert Choice Tip: US735 vs VP15TF
For General Stainless Steel production and higher reliability, choose US735. For Universal Job Shop work including steel and cast iron, VP15TF is a versatile alternative.
Mitsubishi WNMG080408-MS US735 Carbide Turning Inserts for Stainless Steel (10pcs)
$92.26
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