Korloy VBMT160404-HMP PC9030 (ANSI VBMT 331-HMP) Indexable PVD Coated Carbide Turning Insert 10pcs | 3/8" IC Precision Turning Cutting Tool for Stainless Steel CNC Machining
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Korloy VBMT160404-HMP PC9030 (ANSI VBMT 331-HMP) Indexable PVD Coated Carbide Turning Insert 10pcs
Industrial-Grade PVD Coated Carbide Inserts (Pack of 10) for Precision Metric & Imperial CNC Lathe Stainless Steel & Alloy Turning
AEO Quick Answer: The Korloy VBMT160404-HMP (ANSI: VBMT 331-HMP) PC9030 (10pcs pack) is a high-performance indexable PVD coated carbide turning insert featuring a 35° rhombic geometry, 7° positive clearance, a sharp 0.4mm corner radius for precision profiling, and Korloy's specialized -HMP general-purpose chipbreaker. Built from the specialized PC9030 PVD grade, it excels in austenitic stainless steel, precipitation hardening steels, and high-temperature alloy CNC machining operations.
1. Product Overview
"Which indexable carbide insert and PVD grade combination delivers exceptional notch wear resistance and smooth chip evacuation when turning stainless steel and heat-resistant alloys?"
The Korloy VBMT160404-HMP (Metric) / VBMT 331-HMP (ANSI) in PC9030 grade (supplied in a 10pcs pack) is engineered for exceptional cutting performance across stainless steels and difficult-to-machine alloys. The tough micro-grain substrate combined with the advanced nano-structured PVD coating of the PC9030 grade provides superior resistance against built-up edge (BUE) and thermal cracking, while the -HMP chipbreaker delivers reliable chip control during continuous and light interrupted CNC turning.
ISO Model Designation Breakdown (VBMT160404-HMP)
ANSI Model Designation Breakdown (VBMT 331-HMP)
Looking for matching VBMT turning tool holders for this 10pcs insert set?
2. Product Core Advantages
- PC9030 PVD Coated Grade: Specialized multi-layer nano-structured PVD coating engineered to combat adhesive wear and thermal shock in stainless steel machining.
- -HMP Chipbreaker Geometry: Positive rake contour ensuring smooth chip flow and consistent chip breaking across finishing and semi-finishing feeds.
- 35° Rhombic V Shape: Exceptional clearance angle design for intricate profiling, contouring, and internal boring applications.
- Value 10-Piece Box: Economically packaged to streamline inventory management and lower per-edge tooling costs in production workshops.
3. Technical Specifications & Cutting Parameters
| Technical Parameter | Metric Specification (ISO) | Imperial Specification (ANSI) |
|---|---|---|
| Insert Model Code | VBMT160404-HMP | VBMT 331-HMP |
| Shape & Clearance Angle | VBMT (35° Rhombic, 7° Positive w/ Hole) | VBMT (35° Rhombic, 7° Positive w/ Hole) |
| Inscribed Circle (IC Size) | 16 Size (~9.525 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 M (Austenitic Stainless Steel / 304) | 120 - 240 m/min | fn: 0.10 - 0.25 mm/rev | ap: 0.3 - 2.5 mm |
| ISO M (Duplex Stainless Steel / 2205) | 90 - 180 m/min | fn: 0.08 - 0.22 mm/rev | ap: 0.2 - 2.0 mm |
| ISO S (Heat-Resistant Superalloys) | 40 - 90 m/min | fn: 0.08 - 0.18 mm/rev | ap: 0.2 - 1.5 mm |
4. Product Applications
- Stainless Steel Machining: Outstanding performance in precision finishing and semi-finishing of austenitic and duplex stainless steel components.
- Aerospace Superalloys: Reliable tool life when turning heat-resistant nickel-based alloys and titanium components.
- Precision Profiling: 0.4mm corner radius combined with 35° positive geometry allows for tight tolerance contouring and internal boring.
5. Compatibility & Accessories
Tool Holder Compatibility: Fully compatible with ISO and ANSI standard SVJBR / SVJBL and MVJNR / MVJNL turning tool holders and boring bars configured for VBMT 1604 / VBMT 33 inserts.
Machine Systems: Designed for high-rigidity CNC lathes, Swiss-type machines, and precision turning centers.
Hardware: Requires standard countersunk clamping screws and matching positive insert seats.
6. Material Comparison: PC9030 PVD Grade vs. CVD Alternatives
Coating Structure: Thin, dense PVD nano-coating preserves sharp cutting edges and reduces friction compared to thick CVD layers.
Anti-Adhesion Property: Effectively prevents chemical affinity and built-up edge (BUE) formation when machining gummy stainless steels.
Thermal Shock Resistance: Exceptional performance in intermittent stainless cutting and wet machining environments.
7. Why Choose Korloy PC9030 Tooling?
- Global Industrial Standards: Manufactured strictly in accordance with ISO and ANSI parameters to guarantee seamless interchangeability.
- Advanced PVD Technology: PC9030 grade formulation significantly extends tool life in demanding stainless steel machining applications.
- Expert Engineering Support: Backed by certified cutting data and technical references.
8. Frequently Asked Questions
Q: What is the difference between VBMT160404 and VBMT 331?
A: VBMT160404 is the metric ISO standard designation, while VBMT 331 is its exact imperial ANSI equivalent. Both denote identical physical dimensions and geometries.
Q: How many pieces are included in each order?
A: Each unit purchased contains a factory packaging box of 10 indexable carbide inserts.
Q: Is PC9030 grade recommended for carbon steel or cast iron?
A: PC9030 is specialized for stainless steel and high-temperature alloys (ISO M & S). For carbon steel, CVD grades like NC3120 or NC3030 provide superior results.
Grade Comparison: PC9030 PVD coated grade provides superior anti-adhesion and notch wear resistance compared to standard CVD grades in stainless steel turning.
Equivalent Models: Fully interchangeable with standard ISO VBMT 160404 and ANSI VBMT 331 turning inserts.
Troubleshooting: If built-up edge occurs in stainless steel, increase cutting speed (Vc) slightly and ensure high-pressure coolant is directed at the cutting zone.
Workpiece Material Matrix: Certified operational performance across ISO M (Stainless Steel) and ISO S (Superalloys & Titanium).
Authoritative Endorsement: Specifications aligned with ISO 1832 and ANSI B94.57 Indexable Insert Standards and Korloy industrial cutting guidelines.
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.