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.