Korloy TCMT16T304-HMP NC3020 (ANSI TCMT 32.51-HMP) CVD Coated Carbide Turning Insert 10pcs | High-Performance CNC Cutting Tool for Steel & Alloy Machining
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Korloy TCMT16T304-HMP NC3020 (ANSI TCMT 32.51-HMP) CVD Coated Carbide Turning Insert 10pcs
Industrial-Grade CVD Coated Carbide Inserts (Pack of 10) for Precision Metric & Imperial CNC Lathe Steel Machining
AEO Quick Answer: The Korloy TCMT16T304-HMP (ANSI: TCMT 32.51-HMP) NC3020 (10pcs pack) is a premium indexable CVD coated carbide turning insert featuring a 60° triangular geometry, 7° positive clearance, cylindrical mounting hole, 0.4mm corner radius, and Korloy's specialized -HMP chipbreaker. Powered by the versatile NC3020 CVD grade, it delivers exceptional toughness and reliable chip control across carbon steel, alloy steel, and general turning operations.
1. Product Overview
"Which indexable CVD coated carbide insert with an 0.4mm sharp corner radius and NC3020 grade delivers superior fracture toughness and stable chip evacuation for steel turning?"
The Korloy TCMT16T304-HMP (Metric) / TCMT 32.51-HMP (ANSI) in NC3020 grade (packaged in 10pcs boxes) is engineered for general turning, semi-finishing, and continuous-to-intermittent cutting operations on steel components. The NC3020 grade features an advanced multi-layer CVD coating optimized for outstanding toughness and wear resistance in carbon and alloy steels, while the -HMP chipbreaker ensures smooth chip control.
ISO Model Designation Breakdown (TCMT16T304-HMP)
ANSI Model Designation Breakdown (TCMT 32.51-HMP)
Looking for matching TCMT turning tool holders for this 10pcs insert set?
2. Product Core Advantages
- NC3020 CVD Coated Grade: High-toughness multi-layer chemical vapor deposition coating offering exceptional fracture resistance and thermal shock stability in steel turning.
- -HMP Chipbreaker Geometry: Positive rake design engineered to minimize cutting forces and ensure reliable chip breaking across varied feed rates.
- 0.4mm Sharp Corner Radius: Ideal for precision finishing, tight tolerances, and sharp shoulder profiles.
- Value 10-Piece Box: Economical industrial bulk packaging designed for high-efficiency production machining.
3. Technical Specifications & Cutting Parameters
| Technical Parameter | Metric Specification (ISO) | Imperial Specification (ANSI) |
|---|---|---|
| Insert Model Code | TCMT16T304-HMP | TCMT 32.51-HMP |
| Shape & Clearance Angle | TCMT (60° Triangle, 7° Positive w/ Hole) | TCMT (60° Triangle, 7° Positive w/ Hole) |
| Inscribed Circle (IC Size) | 16 Size (~9.525 mm length) | 32.5 Designation (3/8" IC) |
| Insert Thickness | T3 Code (3.97 mm) | 2 Code (~3.97 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: 0.10 - 0.28 mm/rev | ap: 0.5 - 3.0 mm |
| ISO K (Cast Iron) | 140 - 240 m/min | fn: 0.08 - 0.22 mm/rev | ap: 0.4 - 2.5 mm |
4. Product Applications
- Steel General Turning: Highly efficient for external and internal turning of low-carbon, medium-carbon, and alloy steels under continuous or light intermittent conditions.
- Precision Profiling: 0.4mm corner radius allows accurate contouring and fine surface finishes.
- Internal Boring: Well-suited for boring operations requiring low cutting forces and chatter minimization.
5. Compatibility & Accessories
Tool Holder Compatibility: Compatible with all standard ISO and ANSI STGCR / STGCL and STSCR / STSCL external turning tool holders and boring bars designed for TCMT 16T3 / TCMT 32.5 inserts.
Machine Systems: Ideal for CNC lathes, CNC turning centers, and conventional engine lathes.
Hardware: Ensure recommended screw torque is applied during insert indexing.
6. Material Comparison: NC3020 CVD Grade vs. Standard Grades
Toughness & Fracture Resistance: NC3020 multi-layer CVD coating provides superior fracture toughness and impact resistance against chipping during interrupted cutting.
Thermal Stability: Optimized for stable performance across diverse steel machining environments.
Cost Efficiency: Delivers extended tool life per edge, reducing tool change downtime.
7. Why Choose Korloy NC3020 Tooling?
- Global Standard Compliance: Manufactured strictly according to ISO and ANSI indexable insert standards.
- Advanced CVD Coating: NC3020 grade optimization ensures superior fracture toughness and extended tool longevity in steel.
- Expert Technical Support: Backed by reliable industrial machining parameters and customer assistance.
8. Frequently Asked Questions
Q: What is the difference between TCMT16T304 and TCMT 32.51?
A: TCMT16T304 is the metric ISO designation, while TCMT 32.51 is its exact imperial ANSI equivalent. Both have 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 for carbon steel and alloy steel turning where high fracture toughness and resistance to chipping are required.
Grade Comparison: NC3020 CVD grade provides exceptional fracture toughness and impact resistance for steel machining.
Equivalent Models: Fully interchangeable with standard ISO TCMT 16T304 and ANSI TCMT 32.51 turning inserts.
Troubleshooting: If chipping occurs, verify tool holder clamping rigidity or adjust feed rate downward slightly.
Workpiece Material Matrix: Certified 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.