Korloy DCMT11T308-HMP PC9030 Stainless Steel Turning Insert, R0.8 (10pcs)
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The Original Korloy DCMT11T308-HMP PC9030 (ANSI Standard: DCMT 32.52) is a high-performance 55° diamond turning insert specifically designed for Stainless Steel (M) and Heat-Resistant Alloys (S). Featuring a robust 0.8mm (1/32") nose radius, this model provides the highest edge security and structural integrity in the DCMT 11T3 family. The HMP chipbreaker ensures excellent chip evacuation in semi-finishing applications, while the PC9030 PVD grade delivers superior resistance to thermal cracking and built-up edge common in gummy materials like 304 and 316 stainless.
Robust Finishing Solution: The R0.8 radius allows for higher feed rates and deeper cuts than smaller radii. It is the ideal choice for semi-roughing to finishing operations where the workpiece requires a stable, high-strength cutting edge.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Code | DCMT11T308-HMP |
| ANSI Code | DCMT 32.52 |
| Grade | PC9030 (Premium PVD for Stainless) |
| Nose Radius | 0.8 mm (Maximum Edge Strength) |
Core Performance Benefits:
- High Productivity: The R0.8 geometry supports aggressive feed rates, significantly reducing cycle times on larger stainless components.
- Superior Thermal Shield: PC9030 grade features a specialized PVD coating that prevents heat-related deformation and notch wear.
- Advanced Chip Control: The HMP geometry is designed to effectively curl and break tough stainless steel chips, protecting the finished surface.
- Stability in Semi-Roughing: The larger radius helps dissipate cutting heat across a wider area, preventing premature tip failure.
Recommended Cutting Parameters:
| Material Group | Cutting Speed (Vc) | Feed Rate (f) | Depth of Cut (ap) |
|---|---|---|---|
| Austenitic Stainless (304/316) | 90 - 180 m/min | 0.12 - 0.30 mm/rev | 0.8 - 3.0 mm |
| Martensitic Stainless (400 Series) | 100 - 190 m/min | 0.15 - 0.35 mm/rev | 0.8 - 3.5 mm |
| Nickel-Based Alloys | 30 - 70 m/min | 0.10 - 0.22 mm/rev | 0.5 - 2.0 mm |
Compatible Tool Holders:
This insert fits standard 55-degree diamond holders with 11T3 size pockets:
- External Turning: SDJCR/L 2020K11 / 2525M11
- Heavy Boring Bars: S20R-SDUCR11 / S25S-SDUCR11 / S32T-SDUCR11
Grade Choice: PC9030 vs. PC5300
Selecting the right toughness for your R0.8 DCMT insert:
The first choice for 80% of stainless applications. It offers high wear resistance and prevents chemical bonding in continuous turning.
Best for heavy interrupted cuts or working with "scaly" surfaces. Choose PC5300 if your priority is preventing edge fracture over high-speed wear.
Machinist's Insight: Because the R0.8 (32.52) generates more tool pressure than smaller radii, ensure your machine setup is rigid. For large internal boring, the DCMT11T308 is unbeatable for durability.
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.