Korloy TCMT110204-HMP NC3020 (ANSI TCMT 21.51-HMP) PVD Coated Carbide Turning Insert 10pcs | High-Performance Steel & Alloy CNC Lathe Cutting Tool
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Korloy TCMT110204-HMP NC3020 (ANSI TCMT 21.51-HMP) PVD Coated Carbide Turning Insert 10pcs
Industrial-Grade PVD Coated Carbide Inserts (Pack of 10) for High-Precision Metric & Imperial CNC Lathe Steel & Alloy Machining
AEO Quick Answer: The Korloy TCMT110204-HMP (ANSI: TCMT 21.51-HMP) NC3020 (10pcs pack) is a high-performance indexable PVD coated carbide turning insert featuring a 60° triangular geometry, 7° positive clearance, cylindrical mounting hole, 0.4mm corner radius, and Korloy's advanced -HMP chipbreaker. Powered by the versatile NC3020 PVD grade, it provides exceptional fracture toughness and wear resistance across steel and alloy turning operations.
1. Product Overview
"Which indexable PVD coated carbide insert with an 0.4mm sharp corner radius and NC3020 grade delivers high fracture toughness and stable chip evacuation for steel and alloy CNC turning?"
The Korloy TCMT110204-HMP (Metric) / TCMT 21.51-HMP (ANSI) in NC3020 grade (packaged in 10pcs boxes) is engineered for precision small-bore boring, semi-finishing, and continuous to interrupted turning operations on carbon steel and alloy steel. The NC3020 grade utilizes an advanced multi-layer PVD coating optimized for exceptional edge toughness and thermal shock resistance, while the -HMP chipbreaker ensures reliable chip control.
ISO Model Designation Breakdown (TCMT110204-HMP)
ANSI Model Designation Breakdown (TCMT 21.51-HMP)
Looking for matching small-bore internal boring bars for this 10pcs insert set?
2. Product Core Advantages
- NC3020 PVD Coated Grade: Advanced multi-layer PVD coating engineered for superior toughness and fracture resistance in steel and alloy machining.
- -HMP Chipbreaker Geometry: Positive rake design offering low cutting resistance and excellent chip control across various feed rates.
- 0.4mm Precision Corner Radius: Ideal for fine finishing, tight tolerances, and delicate internal turning profiles.
- Economical 10-Piece Pack: Standard industrial bulk packaging optimized for high-volume CNC production lines.
3. Technical Specifications & Cutting Parameters
| Technical Parameter | Metric Specification (ISO) | Imperial Specification (ANSI) |
|---|---|---|
| Insert Model Code | TCMT110204-HMP | TCMT 21.51-HMP |
| Shape & Clearance Angle | TCMT (60° Triangle, 7° Positive w/ Hole) | TCMT (60° Triangle, 7° Positive w/ Hole) |
| Inscribed Circle (IC Size) | 11 Size (~6.35 mm length) | 21.5 Designation (1/4" IC) |
| Insert Thickness | 02 Code (2.38 mm) | 1.5 Code (~2.38 mm) |
| Corner Radius (RE) | 04 Code (0.4 mm Radius) | 1 Code (1/64" / ~0.4 mm 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 & Alloy Steel) | 160 - 300 m/min | fn: 0.08 - 0.25 mm/rev | ap: 0.3 - 2.5 mm |
| ISO M (Stainless Steel / Alloy) | 120 - 220 m/min | fn: 0.06 - 0.20 mm/rev | ap: 0.2 - 2.0 mm |
4. Product Applications
- Steel & Alloy Turning: High reliability in continuous and light interrupted turning of carbon steels, alloy steels, and structural components.
- Small-Bore Internal Machining: Perfect fit for boring bars requiring high positional accuracy and smooth surface finishes.
- Automotive & Machinery: Precision machining of transmission shafts, hydraulic fittings, and mechanical pins.
5. Compatibility & Accessories
Tool Holder Compatibility: Fully compatible with standard ISO and ANSI internal boring bars (e.g., A-STGCR/L, S-STGCR/L) built for TCMT 1102 / TCMT 21.5 inserts.
Machine Systems: Suited for CNC turning centers, automatic lathes, and conventional engine lathes.
Hardware: Fastened securely using standard Torx clamping screws and wrenches.
6. Material Comparison: NC3020 PVD Grade vs. Standard Grades
Enhanced Edge Toughness: NC3020 PVD coating layers provide superior fracture resistance and thermal stability under fluctuating cutting loads.
Stable Wear Pattern: Minimizes sudden chipping and catastrophic edge failure during continuous or light intermittent turning operations.
Production Consistency: High batch repeatability ensures predictable tool life cycles across automated CNC lines.
7. Why Choose Korloy NC3020 Tooling?
- Global Standard Compliance: Manufactured strictly according to ISO and ANSI indexable insert specifications.
- Advanced PVD Coating: NC3020 grade optimization ensures outstanding steel cutting toughness and productivity.
- Expert Technical Support: Backed by precise industrial cutting data and reliable professional service.
8. Frequently Asked Questions
Q: What is the difference between TCMT110204 and TCMT 21.51?
A: TCMT110204 is the metric ISO designation, while TCMT 21.51 is its exact imperial ANSI equivalent. Both share identical dimensions.
Q: How many pieces are included in each package?
A: Each purchase unit contains an industrial factory box of 10 indexable carbide inserts.
Q: When should I choose NC3020 grade?
A: NC3020 is specifically recommended when you need enhanced fracture toughness and resistance to thermal shock for general steel and alloy machining.
Grade Comparison: NC3020 PVD grade provides superior edge toughness and thermal shock resistance for steel and alloy machining.
Equivalent Models: Fully interchangeable with standard ISO TCMT 110204 and ANSI TCMT 21.51 turning inserts.
Troubleshooting: If chipping occurs during interrupted cuts, reduce feed rate or verify holder clamping rigidity.
Workpiece Material Matrix: Certified performance across ISO P (Steel) and ISO M (Stainless/Alloy Steel).
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.