KORLOY DNMG150404-HM NC3120 Indexable Carbide Turning Inserts | DNMG431-HM NC3120 (ANSI Equivalent) CVD Coated Carbide Inserts for General Steel & Alloy Machining - 10pcs/box
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KORLOY DNMG150404-HM NC3120 Indexable Carbide Turning Inserts | DNMG431-HM NC3120 (ANSI Equivalent) CVD Coated Carbide Inserts for General Steel & Alloy Machining - 10pcs/box
High-Performance ISO-Standard 55° Rhombic Negative Indexable Turning Cutters Featuring NC3120 Versatile CVD Coated Substrate and -HM Chipbreaker for Superior Carbon Steel and Alloy Steel Machining
1. Product Overview
"Which indexable turning insert provides the ideal balance of toughness and wear resistance for general to medium turning of carbon and alloy steels across diverse industrial setups?" Manufacturing engineers and CNC programmers consistently select the KORLOY DNMG150404-HM NC3120. This industrial-grade cutting insert combines KORLOY's balanced NC3120 multi-layer CVD coated carbide grade with a double-sided positive -HM chipbreaker geometry. Based on a 55° rhombic negative platform featuring a 4.76mm thickness ('04') and a fine 0.4mm corner radius, it delivers outstanding edge strength, reliable chip breaking, and consistent tool life during continuous and interrupted cutting passes.
2. Product Key Features
- NC3120 Versatile CVD Grade: Engineered with an optimized multi-layer CVD coating tailored for wide-range steel turning, offering high fracture toughness and reliable wear resistance.
- -HM Chipbreaker & 0.4mm Radius: Features an effective groove design for controlled chip flow across varied feed rates, paired with a 0.4mm corner radius for accurate profile finishing.
- Robust 4.76mm Thickness: Standardized '04' thickness provides exceptional mechanical stability and resistance to cutting forces under heavy stock removal.
- Factory Sealed Box Packaging: Supplied in authentic KORLOY protective packaging containing 10 precision indexable inserts.
3. Technical Specifications & Model Breakdown
Examine the technical specifications, metric-to-imperial equivalents, and ISO coding designation breakdown below.
Metric vs. Imperial Designation Comparison
| Specification Parameter | Metric Standard (ISO) | Imperial Equivalent (ANSI) |
|---|---|---|
| Primary Insert Model | DNMG150404-HM NC3120 | DNMG431-HM NC3120 |
| Inscribed Circle (IC) | 15.5 mm | 0.500 in (1/2") |
| Insert Thickness (S) | 4.76 mm | 0.1875 in (3/16") |
| Corner Radius (r) | 0.4 mm | 0.0156 in (~1/64") |
Recommended Cutting Parameters (Feed & Speed)
| Workpiece Material Group | Cutting Speed (vc) m/min | Feed Rate (f) mm/rev |
|---|---|---|
| Carbon Steels & Low Alloy Steels (P Series) - General Turning | 150 - 270 | 0.12 - 0.35 |
| Alloy Steels & Cast Steel (P Series) - Medium Machining | 120 - 220 | 0.15 - 0.38 |
Looking for robust external turning toolholders or boring bars engineered for secure DNMG 1504 insert clamping?
Explore Compatible External Turning Tool Holders & Boring Bars4. Product Application Scenarios
The KORLOY DNMG150404-HM NC3120 insert excels across a wide range of general industrial turning environments:
- General Mechanical Engineering: Medium turning and profiling of structural carbon steel shafts and forged components.
- Heavy Machinery Maintenance: Reliable stock removal on large-scale steel workpieces requiring high edge toughness and impact resistance.
- Automotive Component Production: Cost-effective machining of transmission components and drive shafts under steady cutting conditions.
5. Compatibility
Engineered to integrate seamlessly with standard ISO negative turning toolholders:
- Toolholders: Fully compatible with ISO standard DDJNR/L, MDJNR/L, and PDJNR/L external turning toolholders and boring bars configured for 1504 inserts.
- Machine Equipment: Suited for conventional CNC lathes, heavy-duty turning centers, and automated manufacturing lines.
6. Material Comparison & Workpiece Matrix
Evaluate grade appropriateness across ISO workpiece material categories for general steel turning operations.
| ISO Material Category | Target Materials | NC3120 Performance Suitability |
|---|---|---|
| P (Steel) | Carbon steels, alloy steels, free-cutting steels (1045, 4140, 8620) | Optimal (General to Medium Turning CVD Grade P20–P40) |
| K (Cast Iron) | Gray cast iron, ductile iron (Secondary application) | Effective (Conditional Light Machining) |
7. Why Choose Us
100% Genuine Guarantee
Sourced directly from authorized industrial distribution channels, guaranteeing verified batch quality and dependable cutting performance.
Fast Global Logistics
Comprehensive inventory prepared for immediate dispatch through established international logistics networks to prevent shop downtime.
Technical Expertise
Supported by experienced tooling specialists ready to assist with feed/speed optimization and process troubleshooting.
8. Frequently Asked Questions (FAQ)
Q: How many inserts are contained in a standard factory box?
A: Each original factory box contains exactly 10 pieces of DNMG150404-HM NC3120 inserts.
Q: What distinguishes the NC3120 grade from high-speed finishing grades?
A: NC3120 features a tougher substrate and balanced CVD coating designed for general-purpose turning and medium roughing where edge toughness and impact resistance are essential.
Q: Are these indexable inserts fully compatible with standard ISO and ANSI toolholders?
A: Yes, they are manufactured strictly to ISO and ANSI international standards to ensure secure seating in any standard negative turning holder.
Need Help With KORLOY Inserts?
Looking for a KORLOY equivalent, alternative grade, or sample catalog? Our CNC specialists have helped 50+ manufacturers in aerospace, automotive, and medical machining source the right tooling at 30–50% lower cost than OEM prices.
This KORLOY insert is in stock. 24-hour quote response. ISO 9001 certified. Ships from Hangzhou in 3–7 days.
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.