Korloy VBMT110304-HMP PC9030 (ANSI VBMT 221.5-HMP) Indexable PVD Coated Carbide Turning Insert 10pcs | 1/4" IC Precision CNC Cutting Tool for Stainless Steel & Steel Machining
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Korloy VBMT110304-HMP PC9030 (ANSI VBMT 221.5-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 VBMT110304-HMP (ANSI: VBMT 221.5-HMP) PC9030 (10pcs pack) is a specialized indexable PVD coated carbide turning insert featuring a 35° rhombic geometry, 7° positive clearance, a sharp 0.4mm corner radius for precise profiling, and Korloy's specialized -HMP general-purpose chipbreaker. Engineered with the tough PC9030 PVD grade, it excels in stainless steel, alloy steel, and carbon steel turning operations under continuous to light interrupted machining conditions.
1. Product Overview
"Which indexable carbide insert and PVD grade combination offers superior anti-notch wear and toughness for stainless steel and alloy turning?"
The Korloy VBMT110304-HMP (Metric) / VBMT 221.5-HMP (ANSI) in PC9030 grade (supplied in a 10pcs pack) is engineered for precision turning and boring across stainless steels and alloy components. The fine-grain carbide substrate combined with the high-adhesion PVD coating of the PC9030 grade provides exceptional resistance against built-up edge (BUE) and thermal cracking, while the -HMP chipbreaker delivers smooth chip control during continuous and light interrupted CNC machining.
ISO Model Designation Breakdown (VBMT110304-HMP)
ANSI Model Designation Breakdown (VBMT 221.5-HMP)
Looking for matching VBMT turning tool holders for this 10pcs insert set?
2. Product Core Advantages
- PC9030 PVD Coated Grade: Advanced nanostructured PVD coating engineered to resist thermal shock, chemical wear, and edge build-up in stainless steel machining.
- -HMP Chipbreaker Geometry: Positive rake design ensuring smooth chip flow and consistent evacuation across fine finishing and semi-roughing feeds.
- 35° Rhombic V Shape: Superior clearance angle design for intricate internal boring, external profiling, and tight-tolerance contouring.
- Value 10-Piece Box: Economically packaged to streamline inventory management and lower per-edge tooling expenses in production workshops.
3. Technical Specifications & Cutting Parameters
| Technical Parameter | Metric Specification (ISO) | Imperial Specification (ANSI) |
|---|---|---|
| Insert Model Code | VBMT110304-HMP | VBMT 221.5-HMP |
| Shape & Clearance Angle | VBMT (35° Rhombic, 7° Positive w/ Hole) | VBMT (35° Rhombic, 7° Positive w/ Hole) |
| Inscribed Circle (IC Size) | 11 Size (~6.35 mm length) | 2 Designation (1/4" IC) |
| Insert Thickness | 03 Code (3.18 mm) | 2 Code (1/8" thickness) |
| Corner Radius (RE) | 04 Code (0.4 mm Radius) | 1.5 Code (~0.4mm 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 & Martensitic Stainless Steel) | 120 - 220 m/min | fn: 0.08 - 0.22 mm/rev | ap: 0.2 - 2.0 mm |
| ISO P / S (Alloy Steel & Heat-Resistant Alloys) | 90 - 180 m/min | fn: 0.06 - 0.20 mm/rev | ap: 0.2 - 1.8 mm |
4. Product Applications
- Stainless Steel Turning: Exceptional resistance against chemical wear and built-up edge during finishing of 304, 316, and other stainless grades.
- Internal Boring Operations: Small size 11 profile combined with 35° positive geometry provides ideal clearance for deep bore profiling.
- Alloy Steel Finishing: Smooth surface finish maintenance across high-precision automotive and aerospace component runs.
5. Compatibility & Accessories
Tool Holder Compatibility: Fully compatible with ISO and ANSI standard SVJBR / SVJBL and small-diameter internal boring bars configured for VBMT 1103 / VBMT 221 inserts.
Machine Systems: Designed for high-precision CNC lathes, Swiss-type automatic lathes, 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, high-density PVD coating preserves sharp cutting edges and provides high thermal shock resistance compared to thick CVD layers.
Substrate Toughness: Specialized fine-grain carbide core minimizes micro-chipping when machining gummy materials like stainless steel.
Surface Integrity: Delivers superior surface finish quality and prevents work-hardening on finished component diameters.
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 and surface finish quality in stainless steel machining.
- Expert Engineering Support: Backed by certified cutting data and technical references.
8. Frequently Asked Questions
Q: What is the difference between VBMT110304 and VBMT 221.5?
A: VBMT110304 is the metric ISO standard designation, while VBMT 221.5 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 specifically recommended for stainless steel?
A: Yes, PC9030 is Korloy's premier PVD grade optimized specifically for austenitic stainless steels and alloy steel finishing applications.
Grade Comparison: PC9030 PVD coated grade provides superior anti-wear properties and edge toughness for stainless steel turning compared to standard CVD grades.
Equivalent Models: Fully interchangeable with standard ISO VBMT 110304 and ANSI VBMT 221.5 turning inserts.
Troubleshooting: If built-up edge or adhesive wear appears when cutting stainless steel, ensure adequate coolant concentration and maintain recommended cutting speed (Vc).
Workpiece Material Matrix: Certified operational performance across ISO M (Stainless Steel) and ISO S (Heat-Resistant Super Alloys).
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.