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.
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.