KORLOY DNMG150604-HM NC3020 Indexable Carbide Turning Inserts | DNMG621-HM NC3020 (ANSI Equivalent) CVD Coated Carbide Inserts for General Steel & Alloy Turning - 10pcs/box
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KORLOY DNMG150604-HM NC3020 Indexable Carbide Turning Inserts | DNMG621-HM NC3020 (ANSI Equivalent) CVD Coated Carbide Inserts for General Steel & Alloy Turning - 10pcs/box
High-Performance ISO-Standard 55° Rhombic Negative Indexable Turning Cutters Featuring NC3020 Advanced CVD Coated Carbide Substrate and -HM Universal Chipbreaker for Superior Steel & Alloy Roughing to Finishing Operations
1. Product Overview
"Which indexable turning insert is best suited for general steel machining, providing a reliable balance of wear resistance and edge toughness across continuous and interrupted cuts?" Manufacturing engineers and machinists frequently rely on the KORLOY DNMG150604-HM NC3020. This industrial-grade cutting tool combines KORLOY's reliable NC3020 multi-layer CVD coated carbide grade with a versatile -HM medium-to-roughing chipbreaker geometry. Built on a robust 55° rhombic negative platform featuring an increased 6.35mm thickness (designated by '06') and a 0.4mm corner radius, it delivers outstanding thermal resistance, stable chip control, and extended tool life when turning carbon steels, alloy steels, and cast materials.
2. Product Key Features
- NC3020 Advanced CVD Grade: Engineered with a robust chemical vapor deposition multi-layer coating optimized for high-speed steel turning, offering superior crater wear resistance and thermal stability.
- -HM Chipbreaker & 0.4mm Radius: Features a double-sided general-purpose chipbreaker designed to ensure smooth chip evacuation across a wide range of feed rates and cutting depths, paired with a 0.4mm corner radius for precise profile control.
- Thicker 6.35mm Substrate Profile: The heavy-duty 6.35mm thickness ('06' designation) provides maximum insert strength and thermal mass to absorb impact forces during aggressive cutting.
- Factory Sealed Box Packaging: Supplied in original KORLOY protective packaging containing 10 pieces for dependable inventory tracking and quality assurance.
3. Technical Specifications & Model Breakdown
Review the detailed technical specifications, metric-to-imperial conversions, and ISO coding breakdown below.
Metric vs. Imperial Designation Comparison
| Specification Parameter | Metric Standard (ISO) | Imperial Equivalent (ANSI) |
|---|---|---|
| Primary Insert Model | DNMG150604-HM NC3020 | DNMG621-HM NC3020 |
| Inscribed Circle (IC) | 15.5 mm | 0.593 in (~19/32") |
| Insert Thickness (S) | 6.35 mm | 0.250 in (1/4") |
| Corner Radius (r) | 0.4 mm | 0.0157 in (~1/64") |
Recommended Cutting Parameters (Feed & Speed)
| Workpiece Material Group | Cutting Speed (vc) m/min | Feed Rate (f) mm/rev |
|---|---|---|
| Carbon & Low-Alloy Steels (1045, 4140) | 200 - 350 | 0.15 - 0.40 |
| Alloy & Tool Steels (P20, SKD11) | 150 - 280 | 0.12 - 0.35 |
Need heavy-duty external turning toolholders or boring bars designed for secure DNMG 1506 insert clamping?
Explore Compatible External Turning Tool Holders & Boring Bars4. Product Application Scenarios
The KORLOY DNMG150604-HM NC3020 insert is engineered for high-performance general machining across multiple industrial sectors:
- Automotive Powertrains: Efficient roughing and finishing of forged steel crankshafts, axle shafts, and transmission components.
- Industrial Machinery: Heavy-duty turning of large carbon steel shafts, rollers, and mechanical drive elements.
- Energy Sector: Machining robust alloy steel flanges, valves, and oilfield pipeline connectors.
5. Compatibility
Engineered to fit standard ISO negative toolholder geometries:
- Toolholders: Fully compatible with ISO standard DDJNR/L, MDJNR/L, and PDJNR/L turning toolholders and internal boring bars configured for 1506 insert sizes.
- Machine Equipment: Suitable for conventional CNC lathes, heavy-duty turning centers, and multi-axis turning systems.
6. Material Comparison & Workpiece Matrix
Examine grade suitability across ISO workpiece material classifications.
| ISO Material Category | Target Materials | NC3020 Performance Suitability |
|---|---|---|
| P (Steel) | Carbon steels, alloy steels, and structural steels (1045, 4140, S45C) | Optimal (Primary CVD Grade for General Steel Turning P15–P35) |
| K (Cast Iron) | Gray cast iron and nodular cast iron (HT250, FCD450) | Suitable (Effective for Stable Cast Iron Profiling) |
7. Why Choose Us
100% Genuine Guarantee
Sourced directly from authorized industrial distribution channels, ensuring verified batch quality and reliable machining performance.
Fast Global Logistics
Extensive stock ready for immediate dispatch via reliable international shipping networks to prevent production delays.
Technical Expertise
Backed by experienced tooling engineers ready to assist with cutting parameter optimization and application troubleshooting.
8. Frequently Asked Questions (FAQ)
Q: How many inserts are included in one package box?
A: Each original factory box contains exactly 10 pieces of DNMG150604-HM NC3020 inserts.
Q: What makes the -HM chipbreaker ideal for steel turning?
A: The -HM geometry provides a versatile medium-to-roughing structure that ensures excellent chip breakage across varying depths of cut and feed rates.
Q: Which toolholders accommodate the 6.35mm thickness ('06')?
A: It fits all standard ISO negative turning toolholders and boring bars designed to accept DNMG 1506 size inserts.
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
When choosing CNC cutting tools, check the full model code, dimensions, grade and selected variant before ordering. Do not rely on the product image alone.
For carbide inserts, tool holders, drills and end mills, compare the mounting dimensions, connection type and manufacturer's specifications with your holder or machine. If you are unsure, share your existing part number and machining application with us before ordering.
Check the product listing for the selling unit, pack quantity and included components. If it is unclear whether the price is per piece or per pack, or whether a tool body and inserts are sold separately, contact us before purchasing.
Select cutting speed, feed rate and depth of cut using the relevant manufacturer's recommendations for your tool model, workpiece material, machine conditions and coolant method. The same settings are not suitable for every product or application.
Our automatic quantity discount is 6% off for 2–9 items and 12% off for 10 or more items, based on the total product quantity in the cart. Other offers may not combine with this discount; check the applicable offer conditions.
According to our shipping policy, orders are typically processed and shipped within 1–3 business days after confirmation. Delivery generally takes 5–20 business days, depending on your destination and shipping method. Customs clearance or unforeseen delays may affect delivery times. A tracking number is sent by email after shipment.