Universal "Miracle" Grade Turning Specialist | 100% Made in Japan
Product Overview
The Mitsubishi WNMG080408-MS VP15TF is a legendary, double-sided 80° trigon negative insert known for its incredible versatility. Featuring the advanced VP15TF PVD Miracle Coating, this insert is designed to handle a wide spectrum of materials, from carbon steel and alloy steel to stainless steel and cast iron. With a standard 0.8mm corner radius and the sharp MS chipbreaker, this indexable carbide insert provides a perfect balance of edge strength and precision for CNC machining professionals looking for high-quality surface finishes and stable tool life.
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 Medium-Sharp
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: VP15TF (PVD Miracle Coating)
The VP15TF grade is Mitsubishi's premier PVD solution, often called the "Miracle" grade for its ability to cut almost anything. By combining a high-toughness micro-grain carbide substrate with a specialized AlTiN-based coating, it offers extreme resistance to welding and chipping. This makes it an ideal multi-material indexable carbide insert that maintains a sharp edge even when interrupted cuts or thermal shocks are present.
MS Chipbreaker Geometry
The MS (Medium-Sharp) chipbreaker provides an excellent balance between edge sharpness and structural integrity. In precision turning, the MS geometry effectively breaks chips in both gummy stainless steels and harder alloy steels, preventing "bird-nesting" and ensuring a smooth, uninterrupted CNC turning process.
Recommended Cutting Parameters
General Recommendations (Vary by Material Type):
Steel (P): Vc 100-220 m/min | f 0.15-0.35 mm/rev
Stainless (M): Vc 80-180 m/min | f 0.12-0.30 mm/rev
Cast Iron (K): Vc 100-180 m/min | f 0.15-0.35 mm/rev
Depth of Cut (ap): 0.5 - 3.5 mm
*Pro Tip: For stainless steel applications, use ample coolant to maximize the PVD coating benefits.*
⭐⭐⭐⭐⭐ "Truly a Miracle Grade" - John D., USA "I keep these in my machine for everything. From 4140 to 304 stainless, the VP15TF grade just works. Great tool life."
⭐⭐⭐⭐⭐ "Reliable for CNC Shops" - H. Schmidt, Germany "Very predictable wear. Essential for our automated runs. The MS breaker gives a very clean finish on steel parts."
⭐⭐⭐⭐ "Sharp and Tough" - Takeshi I., Japan "Handles interrupted cuts better than any CVD grade I've tried. Original quality is worth the price."
⭐⭐⭐⭐⭐ "Excellent Value" - Liam R., Australia "WNMG shape with 6 edges and the versatility of VP15TF makes this the most economical insert in our shop."
⭐⭐⭐⭐⭐ "Fast Shipping, Great Product" - Pavel N., Poland "Packaging was perfect. Inserts are definitely original. They perform exactly as the Mitsubishi catalog states."
Technical Q&A
Q: Why choose VP15TF over a CVD grade like US735?
A: VP15TF offers a sharper edge and better toughness against chipping, making it better for finishing and interrupted cuts across multiple materials.
Q: What is the maximum depth of cut for this insert?
A: For the WNMG080408, the recommended maximum depth of cut (ap) is approximately 3.5 mm to ensure stable machining and chip breaking.
Q: Is this insert suitable for dry cutting?
A: While it can handle dry cutting in steels, we highly recommend wet cutting for stainless steel to prevent work hardening and extend edge life.
Expert Choice Tip: VP15TF vs MC7025
For General Purpose Multi-Material work, VP15TF is your best choice. For High-Volume Stainless Steel production with stable setups, consider MC7025 for higher cutting speeds.
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.
