Korloy VCMT160404-HMP PC9030 (ANSI VCMT 331-HMP) PVD Carbide Insert for Stainless Steel (10pcs)
Price shown is a starting point. Contact us for a precise quote based on your requirements.
The Original Korloy VCMT160404-HMP PC9030 (ANSI Cross Reference: VCMT 331-HMP) is a premium 35° Rhombic Positive Insert engineered for High-Precision Stainless Steel Machining. Featuring the specialized PC9030 PVD Grade, this insert is designed to combat the unique challenges of stainless steel, such as work-hardening and built-up edge (BUE). The 1604 substrate (4.76mm thickness) provides the necessary rigidity for stable profiling, even in demanding internal boring applications.
The Anti-Adhesion Expert: Stainless steel tends to "weld" to the tool tip. The ultra-smooth PVD TiAlN coating of the PC9030 grade minimizes friction, ensuring the cutting edge stays sharp and the surface finish remains pristine over long production runs.
Technical Specifications (Metric & ANSI):
| ISO Designation | VCMT 160404-HMP |
| ANSI Designation | VCMT 331-HMP |
| 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 (Premium PVD Coated) |
| Primary Material | Stainless Steel (M), HRSA (S) |
Core Performance Benefits:
- Advanced PVD TiAlN Coating: Offers exceptional oxidation resistance and hardness at high temperatures, perfect for the heat-concentrated cuts typical of 304 and 316 stainless.
- Precise 0.4mm Radius: Generates lower radial cutting forces than larger radii, making it ideal for vibration-prone setups or fine finishing of intricate contours.
- HMP "Harmony" Chipbreaker: Specifically tuned for medium-duty cutting, providing consistent chip evacuation even in "gummy" materials.
- Tough Substrate: The fine-grain carbide matrix absorbs the shocks of light interruptions, ensuring the edge doesn't chip prematurely.
Recommended Cutting Parameters:
| Workpiece Material | Cutting Speed (Vc) | Feed Rate (fn) | Depth of Cut (ap) |
|---|---|---|---|
| Austenitic (304/316) | 90 - 170 m/min | 0.08 - 0.18 mm/rev | 0.3 - 2.0 mm |
| Duplex Stainless | 50 - 100 m/min | 0.07 - 0.15 mm/rev | 0.3 - 1.5 mm |
Compatible Tooling:
- Internal Boring Bars: S32T-SVUCR16 / S40U-SVQCR16 (Right-hand)
- External Profiling: SVJCR 2020K16 / SVJCR 2525M16
Pro Tip: Precision Stainless Profiling
Optimizing the VCMT 160404 for exotic alloys:
Because of the 0.4mm radius, this insert is excellent for thin-walled stainless tubes. It cuts with less pressure than an R0.8, preventing the part from deforming or chattering.
When machining stainless with PVD grades, use high-concentration emulsion or oil. This lubricates the HMP chipbreaker, allowing chips to slide off smoothly without marring the finish.
Packaging: 10 pieces per box.
VCMT 331-HMP Korloy PC9030, VCMT160404 for 316 stainless steel, PC9030 PVD coating vs CVD, VCMT inserts for SVUCR16, stainless steel profiling inserts, Korloy HMP chipbreaker stainless
Technical FAQ & Buying Guide
Absolutely. Our CNC carbide inserts (including CNMG, WNMG, DNMG, and APMT series) are manufactured strictly adhering to international ISO/ANSI specifications. A CNMG 120408 from OYYU BEYOND will flawlessly fit any standard turning tool holder or indexable tool from major global brands like Sandvik Coromant, Kennametal, Iscar, Walter, or SECO, providing a highly cost-effective premium alternative without sacrificing tolerance or tool life.
We offer optimized CVD and PVD multi-layer coatings for different ISO material groups:
- For Carbon/Alloy Steel (ISO P): Choose our thick multi-layer CVD coated grades (e.g., Al2O3 + TiN). They provide exceptional crater wear resistance and thermal barriers during high-speed dry or wet roughing.
- For Stainless Steel (ISO M): Choose our nano-structured PVD coated grades with sharp, positive chipbreakers (like -TM or -MA). This combination prevents work hardening and effectively controls sticky chips.
The optimal cutting parameters vary depending on the workpiece hardness and operation type:
- For General Steel Turnings: Recommended cutting speed ($V_c$) ranges from 150 to 280 m/min, with a feed rate ($f$) of 0.15 to 0.45 mm/rev.
- For Stainless Steel Finishing: Recommended cutting speed ($V_c$) is 120 to 200 m/min, with a feed rate ($f$) of 0.10 to 0.25 mm/rev.Always adjust parameters based on early wear patterns: increase $V_c$ if built-up edge occurs, or reduce $V_c$ if severe flank wear is observed.
Yes, we support machine shops, distributors, and global buyers with tiered wholesale pricing and competitive volume discounts. We also provide OEM custom manufacturing solutions for tool holders and carbide inserts based on your technical drawings. Contact our team to request a quick B2B quotation.
We provide secure worldwide express shipping (via DHL, FedEx, and UPS) with specialized, vibration-proof industrial packaging to ensure tools arrive in perfect condition. In-stock items are dispatched within 24-48 hours, while custom or bulk orders typically have a stable lead time of 15-25 days.
All our cutting tools and tool holders are manufactured strictly in accordance with ISO 9001 and international industrial standards. Every batch undergoes 100% rigorous quality control testing using high-precision optical measuring equipment to ensure reliable tool life and stable performance in continuous mass production.