Korloy DNMG150404-HM PC9030 Stainless Steel Finishing Insert (10pcs)
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The Original Korloy DNMG150404-HM PC9030 (ANSI Standard: DNMG 431) is a specialized 55° diamond insert engineered for precision finishing of Stainless Steel (M) and Exotic Alloys (S). Utilizing Korloy's advanced PVD Nanostructured coating, the PC9030 grade effectively solves the most common issues in stainless turning: built-up edge (BUE) and work-hardening. The sharp 0.4mm nose radius minimizes cutting pressure, delivering an exceptional mirror-like finish even on gummy materials like 304 or 316L.
Superior Finish Quality: PC9030 features an ultra-smooth PVD layer that prevents micro-chipping and adhesion. It is the ideal choice for high-tolerance stainless components in the medical, aerospace, and food-processing industries.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Code | DNMG150404-HM |
| ANSI Code | DNMG 431 |
| Grade | PC9030 (Premium PVD for Stainless) |
| Nose Radius | 0.4 mm (High-Precision Finishing) |
Core Performance Benefits:
- Anti-Adhesion Coating: The smooth PVD surface ensures chips flow freely, preventing them from welding to the cutting edge.
- Sharp Edge Geometry: Reduced cutting forces prevent the vibration and chatter often associated with machining stainless steel.
- Chemical Stability: PC9030 resists oxidative wear at high temperatures, maintaining edge sharpness for longer finishing cycles.
- Versatile HM Chipbreaker: Designed for stable chip evacuation even at very small depths of cut (ap).
Recommended Cutting Parameters:
| Material Group | Cutting Speed (Vc) | Feed Rate (f) | Depth of Cut (ap) |
|---|---|---|---|
| Austenitic Stainless (304/316) | 110 - 200 m/min | 0.05 - 0.18 mm/rev | 0.2 - 1.5 mm |
| Martensitic Stainless (420/440) | 100 - 180 m/min | 0.08 - 0.20 mm/rev | 0.3 - 2.0 mm |
| Duplex Stainless Steel | 70 - 130 m/min | 0.05 - 0.15 mm/rev | 0.2 - 1.2 mm |
Compatible Tool Holders:
Fits all standard 55-degree negative 15-size holders:
- External Precision Holders: DDJNR/L 2020K15 / 2525M15
- Internal Boring Bars: S25S-DDUNR15 / S32T-DDUNR15 / S40U-DDUNR15
The Stainless Mastery: PC9030 vs. NC3120
Why choosing the correct coating matters for stainless steel:
Uses a thin, ultra-sharp PVD coating. Perfect for stainless steel because it cuts through the material cleanly, preventing work-hardening and built-up edge.
Uses a thicker CVD coating. While excellent for carbon steel, it's often too "blunt" for stainless, causing the material to smear and stick to the insert.
Machinist's Pro Tip: If your stainless steel chips look "burnt" or torn, switch to PC9030. Always ensure high-pressure coolant is directed at the cutting tip to maximize the life of the PVD layer.
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.