Korloy VNMG160404-HS PC9030 (ANSI VNMG 331-HS) Precision Finishing PVD Insert for Stainless Steel (10pcs)
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The Original Korloy VNMG160404-HS PC9030 (ANSI Cross Reference: VNMG 331-HS) is a high-precision 35° Rhombic Negative Insert specifically engineered for the Finishing and Semi-Finishing of Stainless Steel. The HS Chipbreaker is designed with an exceptionally sharp edge to "slice" through gummy materials, effectively preventing the work-hardening common in austenitic stainless steels. Coupled with the PC9030 PVD Grade, this insert provides a smooth, reliable cut with a superior surface finish.
Anti-Stick Performance: Stainless steel finishing requires low friction. The PC9030's ultra-smooth PVD coating prevents material from welding to the cutting edge, ensuring dimensional accuracy and a high-gloss reflective finish on your workpiece.
Technical Specifications (Metric & ANSI):
| ISO Designation | VNMG 160404-HS |
| ANSI Designation | VNMG 331-HS |
| Inscribed Circle (IC) | 9.525 mm / (3/8") |
| Thickness (S) | 4.76 mm / (3/16") |
| Corner Radius (r) | 0.4 mm / (1/64") |
| Grade | PC9030 (Advanced PVD TiAlN) |
| Primary Materials | Stainless Steel (M), HRSA (S), Titanium |
Core Performance Benefits:
- Ultra-Sharp HS Geometry: Features a high rake angle that minimizes cutting resistance, making it perfect for thin-walled parts and precision profiles.
- PVD PC9030 Reliability: The specialized TiAlN coating excels in high-heat environments, protecting the cutting edge from the abrasive nature of stainless steel.
- Superior Chip Control: Designed to break chips efficiently at very low depths of cut (as low as 0.15mm), preventing chip nesting and surface scratching.
- 4 Cutting Edges: The negative VNMG design provides double the cutting edges of a standard finishing V-insert, offering superior ROI.
Recommended Cutting Parameters:
| Workpiece Material | Cutting Speed (Vc) | Feed Rate (fn) | Depth of Cut (ap) |
|---|---|---|---|
| 304 / 316 Stainless | 110 - 200 m/min | 0.05 - 0.18 mm/rev | 0.15 - 1.5 mm |
| Titanium Alloys | 40 - 80 m/min | 0.05 - 0.15 mm/rev | 0.10 - 1.0 mm |
Compatible Tooling:
- External Turning: MVJNR / MVVNN / DVLNR Series (Size 16)
- Internal Boring Bars: S32U-MVQNR16 / S40V-MVUNR16
Machinist Tip: The "Finishing Touch"
When finishing stainless steel, your depth of cut (ap) should be equal to or greater than the corner radius (0.4mm) whenever possible to prevent the tool from rubbing and work-hardening the surface.
Use high-concentration coolant or oil to keep the cutting zone stable. The sharp HS edge thrives when it can slice through a lubricated surface at a consistent speed.
Packaging: 10 pieces per box.
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