KORLOY DNMG150408-HM NC3120 Indexable Carbide Turning Inserts | DNMG432-HM NC3120 (ANSI Equivalent) CVD Coated Carbide Inserts for Steel Machining - 10pcs/box
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KORLOY DNMG150408-HM NC3120 Indexable Carbide Turning Inserts | DNMG432-HM NC3120 (ANSI Equivalent) CVD Coated Carbide Inserts for Steel Machining - 10pcs/box
High-Precision ISO-Standard 55° Rhombic Negative Indexable Turning Cutters Featuring KORLOY NC3120 CVD Coated Carbide Substrate and -HM General-Purpose Chipbreaker for Superior Wear Resistance, Edge Toughness, and Stable Performance in Carbon Steel and Alloy Steel Machining
1. Product Overview
"Which indexable turning insert offers optimal wear resistance and stable chip control for general-purpose medium-to-rough turning of carbon and alloy steels?" Professional machinists and CNC programmers frequently turn to the KORLOY DNMG150408-HM NC3120. This industrial-grade turning insert pairs KORLOY's versatile NC3120 CVD multi-layer coated carbide grade with a robust -HM general-purpose chipbreaker geometry. Engineered with a 55° rhombic negative layout, a 15mm cutting edge length, a 4.76mm thickness ('04'), and an 0.8mm corner radius, it delivers balanced toughness and thermal wear resistance, ensuring dependable productivity and predictable tool life across diverse steel turning applications.
2. Product Key Features
- NC3120 CVD Coated Grade: Designed with an advanced chemical vapor deposition (CVD) multi-layer coating optimized to resist flank wear, crater wear, and thermal deformation in steel under demanding conditions.
- -HM General-Purpose Geometry: Features a robust positive-land cutting edge design tailored for medium turning, providing secure chip control across a wide range of feeds and depths of cut.
- 55° Rhombic Versatility: The acute 55-degree apex angle provides exceptional tool clearance for complex profiling, contouring, and multi-directional turning operations.
- Factory Sealed Packaging: Delivered in genuine KORLOY containers containing 10 premium indexable inserts.
3. Technical Specifications & Model Breakdown
Examine the technical parameters, 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 | DNMG150408-HM NC3120 | DNMG432-HM NC3120 |
| Cutting Edge Length / IC Size | 15 mm nominal | 1/2" inscribed circle class |
| Insert Thickness (S) | 4.76 mm | 0.1875 in (3/16") |
| Corner Radius (r) | 0.8 mm | 0.0315 in (~1/32") |
Recommended Cutting Parameters (Feed & Speed)
| Workpiece Material Group | Cutting Speed (vc) m/min | Feed Rate (f) mm/rev |
|---|---|---|
| Carbon Steel & Alloy Steel (P Series) | 170 - 300 | 0.15 - 0.45 |
| Cast Steel & Low Alloy Steel | 140 - 260 | 0.15 - 0.40 |
Need rigid external turning toolholders or boring bars configured for secure DNMG 1504 insert mounting?
Explore Compatible External Turning Tool Holders & Boring Bars4. Product Application Scenarios
The KORLOY DNMG150408-HM NC3120 insert is engineered for general steel turning operations:
- General Mechanical Engineering: Medium roughing and finishing cuts on carbon steel shafts, gears, and structural components.
- Automotive Powertrain Components: High-efficiency external turning on forged alloy steel transmission and engine shafts.
- Industrial Roller & Valve Manufacturing: Continuous and light interrupted turning on heavy-duty steel cylinders and industrial valves.
5. Compatibility
Designed to integrate perfectly with standard ISO negative turning toolholders:
- Toolholders: Fully compatible with ISO standard DDJNR/L, PDJNR/L, and MDJNR/L external turning toolholders and boring bars built for 1504 negative inserts.
- Machine Equipment: Ideal for conventional CNC lathes, heavy-duty turning centers, and automated manufacturing lines.
6. Material Comparison & Workpiece Matrix
Review CVD coated grade application performance across ISO workpiece material categories.
| ISO Material Category | Target Materials | NC3120 Performance Suitability |
|---|---|---|
| P (Steel) | Carbon steel, alloy steel, and structural steel (P10–P35) | Optimal (Enhanced Toughness & Wear Resistance for Steel) |
| M (Stainless Steel) | Austenitic and martensitic stainless steels (M10–M25) | Suitable (Good Thermal Stability & Edge Integrity) |
7. Why Choose Us
100% Genuine Guarantee
Sourced directly from authorized industrial distribution channels, guaranteeing verified batch quality and dependable carbide 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 indexable inserts are included in each standard factory box?
A: Each original factory box contains exactly 10 pieces of DNMG150408-HM NC3120 inserts.
Q: What specific applications is the NC3120 grade best suited for?
A: NC3120 is an advanced CVD coated grade optimized for general-purpose turning of carbon and alloy steels, offering superior toughness and thermal resistance under varying cutting conditions.
Q: Are these inserts compliant with standard ISO and ANSI toolholding specifications?
A: Yes, they are manufactured strictly to ISO 1832 standards, ensuring total interchangeability with standard negative turning toolholders.
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.