KORLOY DNMG110404-HM NC3020 Indexable Carbide Turning Inserts | DNMG321-HM NC3020 (ANSI Equivalent) CVD Coated Carbide Inserts for Steel Machining - 10pcs/box
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✓ Technical Support: Need grade selection help? Contact Engineer
KORLOY DNMG110404-HM NC3020 Indexable Carbide Turning Inserts | DNMG321-HM NC3020 (ANSI Equivalent) CVD Coated Carbide Inserts for Steel Machining - 10pcs/box
High-Performance ISO-Standard 55° Rhombic Negative Indexable Turning Cutters Featuring NC3020 Advanced CVD Coated Substrate and -HM Medium Chipbreaker for Superior General Steel and Alloy Machining
1. Product Overview
"Which indexable turning insert provides balanced toughness and wear resistance for general steel turning, carbon steel, and alloy steel components?" Manufacturing engineers and CNC machinists consistently select the KORLOY DNMG110404-HM NC3020. This industrial-grade cutting insert combines KORLOY's specialized NC3020 multi-layer CVD coated carbide grade with a versatile general-purpose -HM chipbreaker geometry. Built upon a 55° rhombic negative platform with a compact 3.97mm thickness ('04') and a 0.4mm corner radius, it guarantees stable chip control, high thermal shock resistance, and long tool life across continuous and interrupted steel cutting operations.
2. Product Key Features
- NC3020 Advanced CVD Grade: Engineered with a robust multi-layer chemical vapor deposition (CVD) coating optimized for general steel machining, offering outstanding wear resistance and thermal stability at high cutting speeds.
- -HM Medium Chipbreaker & 0.4mm Radius: Features a wide groove profile optimized for general machining and roughing/semi-finishing, paired with a precision 0.4mm corner radius for balanced strength and workpiece edge definition.
- Compact 3.97mm Thickness: Standardized '04' insert thickness class for the 11-series provides exact dimensional fit, high mechanical clamping rigidity, and reliable performance under heavy feed rates.
- Factory Sealed Box Packaging: Supplied in authentic KORLOY 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 | DNMG110404-HM NC3020 | DNMG321-HM NC3020 |
| Inscribed Circle (IC) | 11.6 mm | 0.375 in (3/8") |
| Insert Thickness (S) | 3.97 mm | 0.156 in (5/32") |
| 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 & Alloy Steels (P Series) - General Machining | 180 - 320 | 0.15 - 0.35 |
| Cast Iron (K Series) - Semi-Finishing | 150 - 280 | 0.12 - 0.30 |
Looking for precision external turning toolholders or boring bars designed for secure DNMG 1104 insert clamping?
Explore Compatible External Turning Tool Holders & Boring Bars4. Product Application Scenarios
The KORLOY DNMG110404-HM NC3020 insert delivers outstanding reliability across demanding general engineering sectors:
- Automotive Powertrain Component Manufacturing: High-speed turning of forged steel shafts, gears, and transmission axles.
- General Machinery & Industrial Equipment: Roughing and semi-finishing structural steel plates, brackets, and heavy-duty machinery rollers.
- Energy & Oilfield Sector: Machining carbon steel connectors, valve bodies, and drill collars.
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 1104 inserts.
- Machine Equipment: Optimized for standard CNC lathes, heavy-duty turning centers, and horizontal turning lines.
6. Material Comparison & Workpiece Matrix
Evaluate grade appropriateness across ISO workpiece material categories for general steel turning and structural alloy machining operations.
| ISO Material Category | Target Materials | NC3020 Performance Suitability |
|---|---|---|
| P (Steel) | Low carbon steel, medium carbon steel, alloy steel (C45, 4140, 4340) | Optimal (General Purpose CVD Grade P15–P35) |
| K (Cast Iron) | Gray cast iron, ductile nodular iron (GG25, GGG40) | Effective (Semi-Finishing Operations) |
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 DNMG110404-HM NC3020 inserts.
Q: What makes the NC3020 CVD grade ideal for general steel machining?
A: NC3020 features a wear-resistant multi-layer CVD coating that withstands high cutting temperatures and crater wear, providing exceptional consistency during high-speed steel turning.
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.