Korloy VBMT110304-HMP PC9030 (ANSI VBMT 221-HMP) PVD Coated Insert for Stainless Steel (10pcs)
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The Original Korloy VBMT110304-HMP PC9030 (ANSI Cross Reference: VBMT 221-HMP) is the industry standard for Stainless Steel Machining. This 35° Rhombic Positive Insert is engineered with the PC9030 PVD Grade, which combines an ultra-fine substrate with a TiAlN coating to provide exceptional toughness and oxidation resistance. It is the go-to choice for semi-finishing 300 and 400 series stainless steels, as well as heat-resistant alloys.
Precision in Stainless: Stainless steel is notorious for work-hardening and "sticking" to the tool. The PC9030 grade features a smooth PVD surface that prevents Built-Up Edge (BUE) and chipping, ensuring a superior surface finish and consistent tool life.
Technical Specifications (Metric & ANSI):
| ISO Designation | VBMT 110304-HMP |
| ANSI Designation | VBMT 221-HMP |
| Inscribed Circle (IC) | 6.35 mm / (1/4") |
| Thickness (S) | 3.18 mm / (1/8") |
| Corner Radius (r) | 0.4 mm / (1/64") |
| Grade | PC9030 (Premium PVD Coated) |
| Target Materials | Stainless Steel (M), HRSA (S) |
Core Performance Benefits:
- Anti-Adhesion Coating: The TiAlN PVD film reduces friction, drastically lowering the chance of workpiece material welding to the cutting edge.
- Ultra-Fine Grain Substrate: Provides the high-level toughness required to handle the interrupted cuts and vibrations common in small boring operations.
- Balanced HMP Chipbreaker: Optimized for medium-finishing, providing a "harmony" between low cutting forces and reliable chip breaking in gummy materials.
- Thermal Stability: Excels in both wet and dry cutting, resisting thermal cracking during intermittent coolant application.
Recommended Cutting Parameters:
| Workpiece Material | Cutting Speed (Vc) | Feed Rate (fn) | Depth of Cut (ap) |
|---|---|---|---|
| Austenitic (304/316) | 80 - 180 m/min | 0.05 - 0.20 mm/rev | 0.2 - 2.0 mm |
| Martensitic (410/420) | 100 - 200 m/min | 0.05 - 0.22 mm/rev | 0.2 - 2.5 mm |
PC9030 vs. PC9035: Which to Choose?
Ideal for Stable to Light Interruption. Offers a perfect balance of wear resistance and toughness for 80% of stainless applications.
The choice for Heavy Interrupted Cutting or unstable setups. Maximizes toughness at the cost of some wear resistance.
Packaging: 10 pieces per box.
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