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.