Korloy DNMG150604-HM NC3020 Heavy-Duty Steel Finishing Insert (10pcs)
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The Original Korloy DNMG150604-HM NC3020 (ANSI Standard: DNMG 441) is an extra-thick 55° diamond turning insert designed for stable finishing of Steel (P) and Carbon Steel. With a thickness of 6.35mm, the DNMG1506 series provides significantly better heat absorption and mechanical strength than the standard 1504 series. The NC3020 CVD grade excels in high-speed continuous cutting, offering superior resistance to crater wear and ensuring maximum dimensional precision for large-scale components.
Superior Stability: The increased thickness (T=6.35mm) of the DNMG 441 makes it the go-to choice for heavy-duty machines where vibration and heat buildup are concerns. It maintains a sharp edge longer during extended finishing passes on large diameters.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Code | DNMG150604-HM |
| ANSI Code | DNMG 441 |
| Grade | NC3020 (Premium CVD for Steel) |
| Thickness | 6.35 mm (Heavy-Duty Stability) |
Core Performance Benefits:
- Enhanced Heat Dissipation: The thicker substrate acts as a massive heat sink, preventing the cutting edge from softening during high-speed operation.
- HM Precision Geometry: Optimized for finishing to semi-finishing, delivering excellent chip control even at shallow depths of cut.
- CVD Al2O3 Technology: NC3020 provides a formidable thermal barrier, protecting against abrasive wear in alloy and carbon steels.
- High Edge Security: Ideal for long turning applications where maintaining a constant size is critical.
Recommended Cutting Parameters:
| Material Group | Cutting Speed (Vc) | Feed Rate (f) | Depth of Cut (ap) |
|---|---|---|---|
| Mild Steel (S45C) | 200 - 380 m/min | 0.08 - 0.20 mm/rev | 0.2 - 2.0 mm |
| Alloy Steel (4140) | 180 - 320 m/min | 0.05 - 0.18 mm/rev | 0.2 - 1.5 mm |
| Stainless Steel (Roughing) | 120 - 240 m/min | 0.10 - 0.25 mm/rev | 0.5 - 2.5 mm |
Compatible Tool Holders:
Ensure your holder is designed for the 6.35mm thickness (1506 pocket):
- External Turning: DDJNR/L 2525M15 / 3232P15 (Heavy Duty)
- Large Boring Bars: S32T-DDUNR15 / S40U-DDUNR15 / S50V-DDUNR15
Thickness Choice: DNMG 1506 vs. DNMG 1504
Why professional machinists choose the 1506 (6.35mm thick) series:
Best for Stability & Rigidity. The extra 1.6mm thickness makes the insert much more resistant to fracturing under high pressure and heat. Use this for your most demanding steel finishing jobs.
The Standard Economy. Suitable for general-purpose turning where extreme heat or high-pressure stability isn't the primary concern. More common and fits more standard holders.
Machinist's Pro Tip: If you are getting inconsistent part sizes during long passes on big shafts, the 1506 series in NC3020 will solve your problem by minimizing thermal expansion of the insert itself.
Packaging: 10 pieces per box.
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.