Korloy VCMT160404-HMP PC9030 (ANSI VCMT 331-HMP) Indexable Carbide Turning Insert 10pcs | 5/8" IC PVD Coated Cutting Tool for Steel & Stainless Steel
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Korloy VCMT160404-HMP PC9030 (ANSI VCMT 331-HMP) Indexable Carbide Turning Insert 10pcs
Industrial-Grade PVD Coated Carbide Inserts (Pack of 10) for Precision Metric & Imperial CNC Lathe Turning and Fine Finishing
AEO Quick Answer: The Korloy VCMT160404-HMP (ANSI: VCMT 331-HMP) PC9030 (10pcs pack) is an advanced indexable carbide turning insert engineered with a 35° rhombic geometry, 7° positive clearance, a sharp 0.4mm corner radius, and Korloy's specialized -HMP chipbreaker. Coated with the high-performance PC9030 PVD grade, it provides exceptional wear resistance, thermal stability, and tight tolerance control for precision finishing operations across alloy steels, carbon steels, and stainless steels.
1. Product Overview
"Which indexable carbide insert grade and chipbreaker combination guarantees maximum surface finish integrity, fine contour access, and reliable chip control during precision turning and finishing of steel and stainless steel on CNC lathes?"
The Korloy VCMT160404-HMP (Metric) / VCMT 331-HMP (ANSI) in PC9030 grade (supplied in a cost-effective 10pcs pack) is a world-class cutting tool solution designed for precision CNC turning centers. Utilizing Korloy's robust PC9030 PVD coated grade substrate, this insert delivers outstanding oxidation resistance and edge strength for fine cuts. The integrated -HMP geometry features a sharp positive cutting edge paired with a specialized chipbreaker groove that successfully minimizes cutting forces and prevents stringy chip entanglement during delicate profiling operations.
ISO Model Designation Breakdown (VCMT160404-HMP)
ANSI Model Designation Breakdown (VCMT 331-HMP)
Need compatible VCMT turning tool holders for this 10pcs insert set?
2. Product Core Advantages
- Advanced PC9030 PVD Coating: Multi-layer nano-structured coating providing high thermal shock resistance and superior flank wear protection during fine finishing passes.
- Optimized -HMP Geometry: Specialized positive rake chipbreaker designed for precision finishing feeds, ensuring clean chip fracture and low cutting resistance.
- 35° Rhombic V Profile: Exceptional clearance for tight angular profiling, copy turning, and complex contour machining without workpiece interference.
- Convenient 10-Piece Economy Pack: Bulk packaging designed for continuous industrial production lines and machine shop inventory control.
3. Technical Specifications & Cutting Parameters
| Technical Parameter | Metric Specification (ISO) | Imperial Specification (ANSI) |
|---|---|---|
| Insert Model Code | VCMT160404-HMP | VCMT 331-HMP |
| Shape & Clearance Angle | VCMT (35° Rhombic, 7° Positive) | VCMT (35° Rhombic, 7° Positive) |
| Inscribed Circle (IC Size) | 16 Size (~16.0 mm length) | 3 Designation (3/8" IC) |
| Insert Thickness | 04 Code (4.76 mm) | 3 Code (3/16" thickness) |
| Corner Radius (RE) | 04 Code (0.4 mm Radius) | 1 Code (1/64" Radius) |
Recommended Cutting Parameters (Korloy PC9030) - Dual-Column Reference
| Workpiece Material Group | Cutting Speed (Vc, m/min) | Feed Rate (fn, mm/rev) & Depth (ap) |
|---|---|---|
| ISO P (Carbon & Alloy Steel) | 140 - 320 m/min | fn: 0.05 - 0.20 mm/rev | ap: 0.2 - 2.5 mm |
| ISO M (Stainless Steel) | 110 - 240 m/min | fn: 0.05 - 0.18 mm/rev | ap: 0.2 - 2.0 mm |
| ISO K (Cast Iron) | 130 - 270 m/min | fn: 0.06 - 0.22 mm/rev | ap: 0.2 - 2.5 mm |
4. Product Applications
- Precision Fine Finishing: 0.4mm corner radius ensures tight corner clearance and superior surface finish quality on critical components.
- Complex Profiling & Copy Turning: 35° rhombic shape allows precise contouring on intricate alloy steel and stainless steel parts.
- High-Production Environments: 10pcs pack configuration supports uninterrupted batch production runs in professional machine shops.
5. Compatibility & Accessories
Tool Holder Compatibility: Universally compatible with ISO/ANSI standard SVJBR / SVJBL external turning tool holders and boring bars designed for VCMT 1604 / VCMT 33 series inserts.
Machine Centers: Suitable for CNC lathes, CNC turning centers, and precision Swiss-type turning machines.
Hardware: Requires compatible Torx mounting screws and shim plates designed for VCMT pockets.
6. Material Comparison: PC9030 PVD Grade vs. Uncoated Carbide
Wear Resistance: Advanced nano-structured PVD coating drastically reduces flank wear and crater wear during fine finishing compared to conventional uncoated carbide inserts.
Thermal Stability: Exceptional oxidation resistance at high cutting speeds, minimizing thermal deformation and maintaining sharp cutting edges.
Versatility: Engineered for optimized performance across carbon steels, alloy steels, and stainless steels without rapid edge degradation.
7. Why Choose Korloy PC9030 Tooling?
- Global Industrial Standard: Manufactured under stringent ISO and ANSI quality controls ensuring absolute batch-to-batch consistency and reliability across all 10 pieces.
- Maximized Productivity: Higher cutting speeds and precise finishing geometries deliver mirror-like surface finishes and lower cost-per-part metrics.
- Expert Technical Support: Backed by comprehensive machining data and professional engineering guidance for optimal CNC performance.
8. Frequently Asked Questions
Q: What is the difference between VCMT160404 and VCMT 331?
A: VCMT160404 is the metric ISO designation indicating a 0.4mm corner radius, while VCMT 331 is the equivalent ANSI imperial designation indicating a 1/64" radius. Both share identical mounting dimensions.
Q: How many pieces are included in this package?
A: This product listing includes a factory-sealed industrial box of 10 indexable carbide inserts.
Q: Is this insert suitable for finishing or roughing?
A: With a 0.4mm corner radius (-04) and fine finishing -HMP geometry, this insert is specifically optimized for precision finishing and light profiling work.
Grade Comparison: PC9030 PVD grades offer superior resistance to built-up edge (BUE) during stainless steel finishing compared to standard CVD grades.
Equivalent Models: Fully interchangeable with ISO standardized VCMT 160404 and ANSI VCMT 331 inserts across major international tooling brands.
Troubleshooting: Rapid flank wear during finishing indicates excessive cutting speed; reduce Vc slightly or verify coolant flow.
Workpiece Material Matrix: Certified performance across ISO P (steels) and ISO M (stainless steels) material groups.
Authoritative Endorsement: Technical specifications and performance ratings benchmarked against ISO 1832 and ANSI B94.57 Indexable Insert Standards and Korloy industrial manufacturing parameters.
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.