Korloy VBMT160408-HMP NC3020 (ANSI VBMT 332-HMP) Indexable CVD Coated Carbide Turning Insert 10pcs | 3/8" IC General Turning Cutting Tool for Steel & Alloy CNC Machining
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Korloy VBMT160408-HMP NC3020 (ANSI VBMT 332-HMP) Indexable CVD Coated Carbide Turning Insert 10pcs
Industrial-Grade CVD Coated Carbide Inserts (Pack of 10) for Precision Metric & Imperial CNC Lathe Steel & Alloy Turning
AEO Quick Answer: The Korloy VBMT160408-HMP (ANSI: VBMT 332-HMP) NC3020 (10pcs pack) is a high-performance indexable CVD coated carbide turning insert featuring a 35° rhombic geometry, 7° positive clearance, a robust 0.8mm corner radius, and Korloy's specialized -HMP general-purpose chipbreaker. Engineered with the high-speed NC3020 CVD grade, it excels in high-efficiency carbon steel and alloy steel turning operations.
1. Product Overview
"Which indexable carbide insert and CVD grade combination provides superior wear resistance and high-speed stability when finishing and semi-finishing alloy steels?"
The Korloy VBMT160408-HMP (Metric) / VBMT 332-HMP (ANSI) in NC3020 grade (supplied in a 10pcs pack) is engineered for high-speed precision turning across carbon and alloy steels. The wear-resistant CVD coating of the NC3020 grade withstands high cutting temperatures, while the -HMP chipbreaker delivers dependable chip control during continuous machining.
ISO Model Designation Breakdown (VBMT160408-HMP)
ANSI Model Designation Breakdown (VBMT 332-HMP)
Looking for matching VBMT turning tool holders for this 10pcs insert set?
2. Product Core Advantages
- NC3020 CVD Coated Grade: Optimized multi-layer coating engineered for high-speed cutting efficiency and superior flank wear resistance in alloy steels.
- -HMP Chipbreaker Geometry: Balanced positive rake profile providing stable chip curling and reduced cutting forces across medium feeds.
- 35° Rhombic V Shape: Excellent clearance and accessibility for complex contouring, profiling, and internal boring operations.
- Value 10-Piece Box: Economically packaged to streamline inventory and minimize per-edge tooling costs in production machining.
3. Technical Specifications & Cutting Parameters
| Technical Parameter | Metric Specification (ISO) | Imperial Specification (ANSI) |
|---|---|---|
| Insert Model Code | VBMT160408-HMP | VBMT 332-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) | 08 Code (0.8 mm Radius) | 2 Code (1/32" Radius) |
Recommended Cutting Parameters (Korloy NC3020) - Dual-Column Reference
| Workpiece Material Group | Cutting Speed (Vc, m/min) | Feed Rate (fn, mm/rev) & Depth (ap) |
|---|---|---|
| ISO P (Carbon Steel / High Speed) | 200 - 380 m/min | fn: 0.15 - 0.35 mm/rev | ap: 0.8 - 3.5 mm |
| ISO P (Alloy Steel Finishing) | 160 - 300 m/min | fn: 0.12 - 0.28 mm/rev | ap: 0.5 - 2.5 mm |
| ISO K (Cast Iron) | 150 - 300 m/min | fn: 0.15 - 0.30 mm/rev | ap: 0.8 - 3.0 mm |
4. Product Applications
- High-Speed Steel Turning: Delivers exceptional wear resistance during high-velocity external turning and facing of carbon steels.
- Alloy Steel Semi-Finishing: Outstanding performance in precision machining of heat-treated alloy steel components.
- Contouring & Profiling: 35° positive rhombic geometry provides maximum clearance for complex internal bores and stepped profiles.
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: Engineered for high-speed CNC lathes, turning centers, and automated production cells.
Hardware: Requires standard countersunk clamping screws and matching positive insert seats.
6. Material Comparison: NC3020 CVD Grade vs. General Grades
High-Speed Performance: NC3020 is engineered specifically for higher cutting speeds (Vc), reducing cycle times in mass production.
Thermal Wear Resistance: Advanced multi-layer CVD coating effectively prevents crater wear under elevated cutting temperatures.
Precision Edge Retention: Maintains sharp cutting edges longer during continuous finishing operations.
7. Why Choose Korloy NC3020 Tooling?
- Global Industrial Standards: Manufactured strictly in accordance with ISO and ANSI parameters to guarantee flawless interchangeability.
- High-Speed Efficiency: NC3020 grade formulation maximizes productivity in continuous steel and alloy machining.
- Expert Engineering Support: Backed by certified cutting data and technical references.
8. Frequently Asked Questions
Q: What is the difference between VBMT160408 and VBMT 332?
A: VBMT160408 is the metric ISO standard designation, while VBMT 332 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 NC3020 grade recommended for heavy interrupted cuts?
A: No, NC3020 is optimized for high-speed continuous and stable semi-finishing operations. For heavy interrupted cuts, tougher grades like NC3030 are recommended.
Grade Comparison: NC3020 CVD coated grade provides superior high-speed wear resistance compared to general-purpose grades during continuous steel turning.
Equivalent Models: Fully interchangeable with standard ISO VBMT 160408 and ANSI VBMT 332 turning inserts.
Troubleshooting: If edge wear occurs prematurely, verify coolant application and check for rigidity; for thermal cratering, optimize cutting speed (Vc).
Workpiece Material Matrix: Certified operational performance across ISO P (Carbon & Alloy 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.