Korloy DNMG150408-HM PC9030 Universal Stainless Steel Turning Insert (10pcs)
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The Original Korloy DNMG150408-HM PC9030 (ANSI Standard: DNMG 432) is a high-performance 55° diamond turning insert optimized for Stainless Steel (M) and High-Temperature Alloys (S). This model is the ultimate workhorse for stainless steel machining, combining a robust 0.8mm nose radius with the world-renowned PC9030 PVD grade. It is specifically designed to overcome the challenges of work-hardening and "gummy" chip adhesion, ensuring stable tool life and excellent surface quality during semi-finishing and general turning operations.
Maximum Versatility: The PC9030 grade features a nanostructured PVD coating that provides a high-hardness thermal barrier. The R0.8 geometry offers superior edge strength, making it ideal for everything from smooth continuous cuts to light interrupted machining on 304 and 316 stainless steels.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Code | DNMG150408-HM |
| ANSI Code | DNMG 432 |
| Grade | PC9030 (Premium PVD for Stainless) |
| Nose Radius | 0.8 mm (Enhanced Edge Security) |
Core Performance Benefits:
- Advanced PVD Nanostructure: High resistance to built-up edge (BUE) and oxidation, maintaining a sharp cutting edge even in high-heat conditions.
- Enhanced Edge Toughness: The 0.8mm radius handles higher feed rates and resists chipping better than 0.4mm versions.
- Superior Chip Control: The HM chipbreaker is optimized for medium feed ranges, ensuring efficient chip evacuation and reducing machine downtime.
- Broad Application Window: Excels in Austenitic, Martensitic, and Duplex stainless steels.
Recommended Cutting Parameters:
| Material Group | Cutting Speed (Vc) | Feed Rate (f) | Depth of Cut (ap) |
|---|---|---|---|
| Austenitic (304/316) | 100 - 180 m/min | 0.12 - 0.30 mm/rev | 0.8 - 3.5 mm |
| Duplex Stainless (2205) | 60 - 110 m/min | 0.10 - 0.25 mm/rev | 0.8 - 2.5 mm |
| Precipitation Hardening | 50 - 120 m/min | 0.10 - 0.28 mm/rev | 1.0 - 3.0 mm |
Compatible Tool Holders:
Fits all standard 55-degree negative 15-size holders:
- External Turning: DDJNR/L 2020K15 / 2525M15 / 3232P15
- Boring Bars: S25S-DDUNR15 / S32T-DDUNR15 / S40U-DDUNR15
Choosing the Right Stainless Grade: PC9030 vs. PC5300
Korloy offers two main PVD choices for stainless steel. Which is right for you?
Optimized for Chemical Resistance. Best for 300-series stainless at medium-to-high speeds. It is the first choice to prevent built-up edge and surface smearing.
Optimized for Mechanical Strength. Switch to PC5300 only if you are dealing with heavy interruptions or very unstable, low-speed machining where PC9030 is chipping.
Machinist's Pro Tip: For the DNMG150408, start with PC9030. It provides the best balance of tool life and surface finish for 90% of stainless steel applications.
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.