Korloy DCMT11T304-HMP PC9030 Stainless Steel Turning Insert (10pcs)
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The Original Korloy DCMT11T304-HMP PC9030 (ANSI Standard: DCMT 32.51) is a high-performance 55° diamond insert engineered for semi-finishing and finishing of Stainless Steel (M) and Super Alloys (S). The 11T3 size provides a robust platform for stable machining on medium-sized CNC lathes. Featuring the specialized HMP chipbreaker, this insert excels at managing the difficult, stringy chips produced by stainless steel. The PC9030 PVD grade is recognized globally for its high toughness and ability to withstand the extreme localized heat of high-alloy machining.
The All-Rounder for Stainless: The 0.4mm nose radius (R0.4) is the most popular choice for general turning, providing an ideal balance between superior surface finish and edge strength for both continuous and light interrupted cuts.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Code | DCMT11T304-HMP |
| ANSI Code | DCMT 32.51 |
| Grade | PC9030 (Premium PVD for Stainless Steel) |
| Nose Radius | 0.4 mm (Industry Standard for Finishing) |
Core Performance Benefits:
- Optimized HMP Geometry: Sharp cutting edge reduces cutting pressure, preventing work hardening and improving dimensional accuracy.
- Advanced PVD Coating: PC9030 offers excellent resistance against "Notch Wear" and chemical adhesion, common when machining 300-series stainless.
- Structural Rigidity: The 11mm edge length ensures the insert remains stable during semi-finishing passes in harder materials.
- Universal Compatibility: While optimized for stainless, it also provides excellent results in Low Carbon Steels and Heat Resistant Alloys.
Recommended Cutting Parameters:
| Material Group | Cutting Speed (Vc) | Feed Rate (f) | Depth of Cut (ap) |
|---|---|---|---|
| Austenitic Stainless (304/316) | 100 - 190 m/min | 0.08 - 0.20 mm/rev | 0.5 - 2.5 mm |
| Martensitic Stainless (440C) | 110 - 200 m/min | 0.10 - 0.22 mm/rev | 0.5 - 3.0 mm |
| Titanium Alloys | 40 - 80 m/min | 0.06 - 0.15 mm/rev | 0.3 - 1.5 mm |
Compatible Tool Holders:
Fits all standard 55-degree diamond tool holders for 11T3 size:
- External Turning: SDJCR/L 1616H11 / 2020K11 / 2525M11
- Internal Boring: S16Q-SDUCR11 / S20R-SDUCR11 / S25S-SDUCR11
The Stainless Steel Guide: PC9030 vs. PC5300
Which Korloy grade is right for your turning operation?
The General Purpose Stainless Grade. It balances wear resistance and toughness perfectly. Best for finishing and semi-finishing at standard speeds.
The Heavy Interruption King. Choose PC5300 if you are dealing with violent interrupted cuts or unstable machine setups where edge survival is the top priority.
Machinist's Pro Tip: If your stainless steel chips are not breaking, increase your feed rate (f) slightly to engage the chipbreaker groove, or increase the depth of cut (ap).
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.