Korloy TCMT16T304-HMP NC3030 Heavy Interrupted Steel Turning Insert (10pcs)
Price shown is a starting point. Contact us for a precise quote based on your requirements.
The Original Korloy TCMT16T304-HMP NC3030 is a heavy-duty, ultra-tough Triangular Indexable Insert engineered for the most demanding Steel Turning applications. Designed for larger workpieces, the 16mm edge length combined with the NC3030 CVD Grade provides unparalleled impact resistance. This insert is specifically built to excel where others fail: interrupted cuts, heavy scale, and non-rigid setups on Carbon, Alloy, and Cast Steels.
The "Safety First" Choice: When machining large components with cross-holes, splines, or rough surfaces, tool failure is costly. NC3030 is Korloy's toughest steel grade, offering a massive safety margin against edge chipping and sudden breakage during heavy industrial cycles.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Designation | TCMT16T304-HMP |
| Corner Radius (r) | 0.4 mm (Precision Finishing) |
| Grade | NC3030 (Ultra-Tough CVD Coating) |
| Insert Thickness | 3.97 mm |
Core Performance Benefits:
- Shock Absorption: The specialized substrate is optimized to absorb mechanical shocks, making it the best choice for interrupted cuts (P25-P40 range).
- HMP Geometry Advantage: The "HMP" chipbreaker is a medium-finishing specialist that reduces cutting forces while maintaining stable chip breakage across varying depths of cut.
- Superior Thermal Resistance: Multi-layer CVD coating protects the insert during dry machining or when cooling is inconsistent.
- Reliability in Large Bores: Ideal for large-diameter internal boring where tool deflection can lead to vibration and edge wear.
Recommended Cutting Parameters:
| Material Group | Cutting Speed (Vc) | Feed Rate (fn) | Depth of Cut (ap) |
|---|---|---|---|
| Standard Steel (1045 / A36) | 140 - 280 m/min | 0.12 - 0.35 mm/rev | 0.5 - 4.0 mm |
| Alloy Steel (4140 / 5140) | 120 - 220 m/min | 0.10 - 0.30 mm/rev | 0.5 - 3.0 mm |
| Cast Steel / Interrupted | 80 - 180 m/min | 0.15 - 0.35 mm/rev | 0.8 - 4.0 mm |
Compatible Tooling Systems:
Precision matched for heavy-duty 16-size holders:
- External Turning: STGCR 2020K16 / STGCR 2525M16
- Internal Boring: S25S-STUCR16 / S32T-STUCR16
Machinist Tip: The "Insurance" Grade
Optimizing your large-scale steel turning with NC3030:
Best for Reliability. Use this when the cutting is rough. It prevents chipping during interrupted cuts or when machining through welded seams. It is more forgiving on older machines with less rigidity.
Best for Efficiency. If you have a clean, continuous cut and a rigid CNC, switch to NC3020 to increase your RPM and maximize tool life against gradual wear.
Pro Advice: For heavy boring using TCMT16, ensure your S32T-STUCR16 bar is as rigid as possible. If you encounter chatter, NC3030's toughness helps protect the edge, but reducing the depth of cut is always recommended to save the machine spindle.
Packaging: 10 pieces per box.
Korloy TCMT16T304-HMP price, NC3030 grade for interrupted steel turning, large boring bar inserts for rough steel, TCMT16T304 tough grade for alloy steel, heavy duty machining inserts for welded parts
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.