Korloy DNMG110408-HM PC9030 Stainless Steel Turning Insert, R0.8 (10pcs)
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The Original Korloy DNMG110408-HM PC9030 (ANSI Standard: DNMG 332) is a high-performance 55° diamond turning insert specifically optimized for Stainless Steel (M) and Heat-Resistant Alloys (S). Featuring a robust 0.8mm nose radius, this insert offers enhanced edge strength compared to finishing models, allowing for stable performance during semi-finishing and medium-duty turning. The PC9030 PVD grade is world-renowned for its ability to handle the "gummy" nature of stainless steel while resisting thermal cracking and tool wear.
Built for Tough Materials: If you are struggling with built-up edge or unpredictable tool life in 304 or 316 Stainless Steel, the PC9030 grade combined with the R0.8 edge provides the perfect balance of toughness and heat resistance.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Code | DNMG110408-HM |
| ANSI Code | DNMG 332 |
| Grade | PC9030 (Premium PVD for Stainless) |
| Nose Radius | 0.8 mm (Medium Duty Strength) |
Core Performance Benefits:
- PVD Nano-Coating Technology: Provides a sharp cutting edge with ultra-smooth surface layers to prevent workpiece adhesion.
- R0.8 Edge Security: The larger radius absorbs mechanical shocks better than R0.4, making it ideal for forged or cast stainless parts.
- Excellent Thermal Stability: Specifically designed to resist the high localized heat generated during stainless steel turning.
- HM Universal Geometry: Reliable chip breaking across a wide range of feed rates, reducing vibration and tool pressure.
Recommended Cutting Parameters:
| Material Group | Cutting Speed (Vc) | Feed Rate (f) | Depth of Cut (ap) |
|---|---|---|---|
| Stainless Steel (304/316) | 90 - 170 m/min | 0.12 - 0.30 mm/rev | 0.8 - 3.0 mm |
| Precipitation Hardening (17-4PH) | 50 - 110 m/min | 0.10 - 0.25 mm/rev | 0.8 - 2.5 mm |
| High-Temp Alloys (Inconel) | 25 - 55 m/min | 0.08 - 0.20 mm/rev | 0.5 - 1.5 mm |
Compatible Tool Holders:
Standard fit for all 55-degree negative holders (11-size pocket):
- External Holders: DDJNR/L 2020K11 / 2525M11 / 3232P11
- Boring Bars: S25S-DDUNR11 / S32T-DDUNR11 / S40U-DDUNR11
Stainless Steel Grade Tip: PC9030 vs. PC5300
Choosing the right PVD grade for your stainless project:
The Standard Choice for Stainless Steel. It excels in general turning of 300-series stainless, offering the best resistance to chemical wear and BUE (Built-up Edge).
A tougher grade often used for Heavily Interrupted Cuts or very low cutting speeds. If PC9030 is chipping due to violent impacts, PC5300 is the next step up in toughness.
Machinist's Insight: For the DNMG110408, PC9030 is the most versatile choice. It allows you to push the feed rate slightly higher while maintaining a beautiful surface finish on stainless workpieces.
Packaging: 10 pieces per box.