Korloy DCMT11T302-HMP PC9030 Stainless Steel Turning Insert (10pcs)
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The Original Korloy DCMT11T302-HMP PC9030 (ANSI Standard: DCMT 32.50.5) is a premium 55° diamond turning insert engineered for precision finishing of Stainless Steel (M) and Super Alloys (S). Designed for the 11T3 format, it offers greater structural rigidity than smaller sizes, making it ideal for medium-sized components. The HMP chipbreaker provides elite chip control at light-to-medium depths of cut, while the PC9030 PVD coating ensures exceptional resistance to thermal cracking and notch wear in gummy materials like 304 and 316 stainless steel.
High-Precision Specialist: The 0.2mm nose radius (R0.2) is engineered for ultra-fine finishes and sharp internal corners. It minimizes radial cutting forces, effectively preventing chatter and vibration on slender workpieces or thin-walled parts.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Code | DCMT11T302-HMP |
| ANSI Code | DCMT 32.50.5 |
| Grade | PC9030 (PVD Coated for Stainless Steel) |
| Nose Radius | 0.2 mm (Ultra-Precision Finishing) |
Core Performance Benefits:
- Elite Chip Management: The HMP geometry is optimized to break chips at low feeds, eliminating the "nesting" of long stainless steel chips.
- Enhanced Thermal Resistance: PC9030’s PVD coating acts as a thermal shield, allowing for stable machining even under high localized temperatures.
- Precision Edge Prep: Ground periphery ensures high repeatability and minimal part-to-part variation in tight-tolerance production.
- Versatile Substrate: The sub-micron carbide substrate provides the toughness required to survive light interrupted cuts.
Recommended Cutting Parameters:
| Workpiece Material | Cutting Speed (Vc) | Feed Rate (f) | Depth of Cut (ap) |
|---|---|---|---|
| Stainless Steel (304/316) | 100 - 180 m/min | 0.05 - 0.12 mm/rev | 0.2 - 1.5 mm |
| Hardened Steel (HRc 30-45) | 80 - 140 m/min | 0.04 - 0.10 mm/rev | 0.1 - 1.0 mm |
| Inconel / Titanium Alloys | 30 - 65 m/min | 0.05 - 0.10 mm/rev | 0.2 - 1.2 mm |
Compatible Tool Holders:
Designed for all standard 55-degree diamond SDJC or SDUC holders with 11T3 size pockets:
- External Turning: SDJCR/L 1212 / 1616 / 2020K11
- Internal Boring: S16Q-SDUCR11 / S20R-SDUCR11 / S25S-SDUCR11
Stainless Tooling Tip: HMP vs. HM Chipbreakers
Choosing the right geometry for your DCMT 11 series:
Optimized for Precision & Finishing. It has a sharper cutting edge and narrower chip groove, ideal for fine surface finishes and small depths of cut.
The General Purpose choice. It features a wider chipbreaker land for higher stock removal rates but is less effective for very light finishing passes.
Machinist's Insight: When using the R0.2 (32.50.5), always monitor the feed rate. If the feed is too high, the fine tip can suffer from rapid mechanical wear; if too low, you may see rubbing instead of cutting.
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.