Korloy VBMT160404-HMP NC3030 (ANSI VBMT 331-HMP) Indexable CVD Coated Carbide Turning Insert 10pcs | 3/8" IC Heavy Duty Cutting Tool for Steel & Cast Iron CNC Machining
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Korloy VBMT160404-HMP NC3030 (ANSI VBMT 331-HMP) Indexable CVD Coated Carbide Turning Insert 10pcs
Industrial-Grade CVD Coated Carbide Inserts (Pack of 10) for Precision Metric & Imperial CNC Lathe Steel & Cast Iron Turning
AEO Quick Answer: The Korloy VBMT160404-HMP (ANSI: VBMT 331-HMP) NC3030 (10pcs pack) is a high-performance indexable CVD 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. Engineered with the robust NC3030 CVD grade, it excels in carbon steel, alloy steel, and cast iron turning operations under stable to interrupted cutting conditions.
1. Product Overview
"Which indexable carbide insert and CVD grade combination provides exceptional toughness and wear resistance for heavy steel and cast iron turning?"
The Korloy VBMT160404-HMP (Metric) / VBMT 331-HMP (ANSI) in NC3030 grade (supplied in a 10pcs pack) is engineered for heavy-duty turning and versatile machining across steel and cast iron components. The tough carbide substrate combined with the thick multi-layer CVD coating of the NC3030 grade provides superior resistance against thermal shock and edge chipping, while the -HMP chipbreaker delivers reliable chip control during continuous and light interrupted CNC machining.
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
- NC3030 CVD Coated Grade: High-toughness multi-layer CVD coating formulated to withstand heavy cutting forces and thermal fluctuations in steel and cast iron machining.
- -HMP Chipbreaker Geometry: Positive rake contour ensuring smooth chip flow and consistent chip breaking across finishing and general turning 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 NC3030) - Dual-Column Reference
| Workpiece Material Group | Cutting Speed (Vc, m/min) | Feed Rate (fn, mm/rev) & Depth (ap) |
|---|---|---|
| ISO P (Carbon Steel / Alloy Steel) | 150 - 280 m/min | fn: 0.10 - 0.28 mm/rev | ap: 0.4 - 3.0 mm |
| ISO K (Gray Cast Iron / Ductile Iron) | 130 - 240 m/min | fn: 0.10 - 0.25 mm/rev | ap: 0.3 - 2.5 mm |
4. Product Applications
- Steel Component Turning: Outstanding durability and wear resistance during general turning and facing of carbon and alloy steels.
- Cast Iron Machining: Reliable edge toughness when cutting gray and ductile iron castings under continuous or light interrupted conditions.
- 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, conventional turning centers, and heavy-duty production lines.
Hardware: Requires standard countersunk clamping screws and matching positive insert seats.
6. Material Comparison: NC3030 CVD Grade vs. PVD Alternatives
Coating Structure: Thick, robust multi-layer CVD coating provides enhanced thermal barrier protection and wear resistance for steel and cast iron.
Substrate Toughness: Engineered with a high-strength carbide core to prevent catastrophic chipping during heavier cuts compared to thin PVD layers.
Production Stability: Ideal for general machining environments requiring predictable, long tool life across large batch runs.
7. Why Choose Korloy NC3030 Tooling?
- Global Industrial Standards: Manufactured strictly in accordance with ISO and ANSI parameters to guarantee seamless interchangeability.
- Advanced CVD Technology: NC3030 grade formulation significantly extends tool life in demanding steel and cast iron 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 NC3030 grade recommended for stainless steel or aluminum?
A: NC3030 is optimized for carbon steels, alloy steels, and cast irons (ISO P & K). For stainless steel, PVD grades like PC9030 are recommended.
Grade Comparison: NC3030 CVD coated grade provides superior thermal resistance and toughness for general steel and cast iron turning compared to specialized finishing grades.
Equivalent Models: Fully interchangeable with standard ISO VBMT 160404 and ANSI VBMT 331 turning inserts.
Troubleshooting: If edge chipping occurs in interrupted cuts, reduce feed rate slightly and ensure rigid clamping within the tool holder.
Workpiece Material Matrix: Certified operational performance across ISO P (Steel) and ISO K (Cast Iron).
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.